[{"month":"01","publication_identifier":{"eissn":["2041-1723"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"pmid":["38167818"]},"oa":1,"quality_controlled":"1","project":[{"call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","grant_number":"862046"},{"_id":"34c0acea-11ca-11ed-8bc3-8775e10fd452","grant_number":"101069515","name":"Integrated GermaNIum quanTum tEchnology"},{"name":"Quantum bits with Kitaev Transmons","grant_number":"101115315","_id":"bdc2ca30-d553-11ed-ba76-cf164a5bb811"},{"name":"Towards scalable hut wire quantum devices","call_identifier":"FWF","grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E"},{"_id":"bd8bd29e-d553-11ed-ba76-f0070d4b237a","grant_number":"P36507","name":"Merging spin and superconducting qubits in planar Ge"},{"name":"Conventional and unconventional topological superconductors","_id":"34a66131-11ca-11ed-8bc3-a31681c6b03e","grant_number":"F8606"}],"doi":"10.1038/s41467-023-44114-0","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"article_number":"169","file_date_updated":"2024-01-17T11:03:00Z","ec_funded":1,"license":"https://creativecommons.org/licenses/by/4.0/","acknowledgement":"We acknowledge Alexander Brinkmann, Alessandro Crippa, Francesco Giazotto, Andrew Higginbotham, Andrea Iorio, Giordano Scappucci, Christian Schonenberger, and Lukas Splitthoff for helpful discussions. We thank Marcel Verheijen for the support in the TEM analysis. This research and related results were made possible with the support of the NOMIS\r\nFoundation. It was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union’s Horizon 2020 research andinnovation programme under Grant Agreement No 862046, the HORIZONRIA\r\n101069515 project, the European Innovation Council Pathfinder grant no. 101115315 (QuKiT), and the FWF Projects #P-32235, #P-36507 and #F-8606. For the purpose of open access, the authors have applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission. R.S.S. acknowledges Spanish CM “Talento Program\"\r\nProject No. 2022-T1/IND-24070. J.J. acknowledges European Research Council TOCINA 834290.","year":"2024","pmid":1,"publication_status":"published","department":[{"_id":"GeKa"}],"publisher":"Springer Nature","author":[{"full_name":"Valentini, Marco","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","last_name":"Valentini","first_name":"Marco"},{"first_name":"Oliver","last_name":"Sagi","id":"71616374-A8E9-11E9-A7CA-09ECE5697425","full_name":"Sagi, Oliver"},{"id":"7aa1f788-b527-11ee-aa9e-e6111a79e0c7","first_name":"Levon","last_name":"Baghumyan","full_name":"Baghumyan, Levon"},{"full_name":"de Gijsel, Thijs","id":"a0ece13c-b527-11ee-929d-bad130106eee","first_name":"Thijs","last_name":"de Gijsel"},{"id":"4C9ACE7A-F248-11E8-B48F-1D18A9856A87","last_name":"Jung","first_name":"Jason","full_name":"Jung, Jason"},{"full_name":"Calcaterra, Stefano","first_name":"Stefano","last_name":"Calcaterra"},{"full_name":"Ballabio, Andrea","last_name":"Ballabio","first_name":"Andrea"},{"id":"2A67C376-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2862-8372","first_name":"Juan L","last_name":"Aguilera Servin","full_name":"Aguilera Servin, Juan L"},{"full_name":"Aggarwal, Kushagra","first_name":"Kushagra","last_name":"Aggarwal","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb","orcid":"0000-0001-9985-9293"},{"full_name":"Janik, Marian","last_name":"Janik","first_name":"Marian","id":"396A1950-F248-11E8-B48F-1D18A9856A87"},{"id":"38756BB2-F248-11E8-B48F-1D18A9856A87","first_name":"Thomas","last_name":"Adletzberger","full_name":"Adletzberger, Thomas"},{"last_name":"Seoane Souto","first_name":"Rubén","full_name":"Seoane Souto, Rubén"},{"full_name":"Leijnse, Martin","last_name":"Leijnse","first_name":"Martin"},{"full_name":"Danon, Jeroen","last_name":"Danon","first_name":"Jeroen"},{"full_name":"Schrade, Constantin","first_name":"Constantin","last_name":"Schrade"},{"full_name":"Bakkers, Erik","last_name":"Bakkers","first_name":"Erik"},{"full_name":"Chrastina, Daniel","last_name":"Chrastina","first_name":"Daniel"},{"first_name":"Giovanni","last_name":"Isella","full_name":"Isella, Giovanni"},{"orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios","full_name":"Katsaros, Georgios"}],"date_created":"2024-01-14T23:00:56Z","date_updated":"2024-01-17T11:07:55Z","volume":15,"scopus_import":"1","day":"02","has_accepted_license":"1","article_processing_charge":"Yes","publication":"Nature Communications","citation":{"ama":"Valentini M, Sagi O, Baghumyan L, et al. Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. 2024;15. doi:10.1038/s41467-023-44114-0","apa":"Valentini, M., Sagi, O., Baghumyan, L., de Gijsel, T., Jung, J., Calcaterra, S., … Katsaros, G. (2024). Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-023-44114-0","ieee":"M. Valentini et al., “Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium,” Nature Communications, vol. 15. Springer Nature, 2024.","ista":"Valentini M, Sagi O, Baghumyan L, de Gijsel T, Jung J, Calcaterra S, Ballabio A, Aguilera Servin JL, Aggarwal K, Janik M, Adletzberger T, Seoane Souto R, Leijnse M, Danon J, Schrade C, Bakkers E, Chrastina D, Isella G, Katsaros G. 2024. Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. 15, 169.","short":"M. Valentini, O. Sagi, L. Baghumyan, T. de Gijsel, J. Jung, S. Calcaterra, A. Ballabio, J.L. Aguilera Servin, K. Aggarwal, M. Janik, T. Adletzberger, R. Seoane Souto, M. Leijnse, J. Danon, C. Schrade, E. Bakkers, D. Chrastina, G. Isella, G. Katsaros, Nature Communications 15 (2024).","mla":"Valentini, Marco, et al. “Parity-Conserving Cooper-Pair Transport and Ideal Superconducting Diode in Planar Germanium.” Nature Communications, vol. 15, 169, Springer Nature, 2024, doi:10.1038/s41467-023-44114-0.","chicago":"Valentini, Marco, Oliver Sagi, Levon Baghumyan, Thijs de Gijsel, Jason Jung, Stefano Calcaterra, Andrea Ballabio, et al. “Parity-Conserving Cooper-Pair Transport and Ideal Superconducting Diode in Planar Germanium.” Nature Communications. Springer Nature, 2024. https://doi.org/10.1038/s41467-023-44114-0."},"article_type":"original","date_published":"2024-01-02T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Superconductor/semiconductor hybrid devices have attracted increasing interest in the past years. Superconducting electronics aims to complement semiconductor technology, while hybrid architectures are at the forefront of new ideas such as topological superconductivity and protected qubits. In this work, we engineer the induced superconductivity in two-dimensional germanium hole gas by varying the distance between the quantum well and the aluminum. We demonstrate a hard superconducting gap and realize an electrically and flux tunable superconducting diode using a superconducting quantum interference device (SQUID). This allows to tune the current phase relation (CPR), to a regime where single Cooper pair tunneling is suppressed, creating a sin(2y) CPR. Shapiro experiments complement this interpretation and the microwave drive allows to create a diode with ≈ 100% efficiency. The reported results open up the path towards integration of spin qubit devices, microwave resonators and (protected) superconducting qubits on the same silicon technology compatible platform."}],"_id":"14793","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium","ddc":["530"],"status":"public","intvolume":" 15","oa_version":"Published Version","file":[{"checksum":"ef79173b45eeaf984ffa61ef2f8a52ab","success":1,"date_created":"2024-01-17T11:03:00Z","date_updated":"2024-01-17T11:03:00Z","relation":"main_file","file_id":"14825","file_size":2336595,"content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_name":"2024_NatureComm_Valentini.pdf"}]},{"language":[{"iso":"eng"}],"doi":"10.1016/j.mssp.2024.108231","project":[{"name":"Integrated GermaNIum quanTum tEchnology","grant_number":"101069515","_id":"34c0acea-11ca-11ed-8bc3-8775e10fd452"}],"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1016/j.mssp.2024.108231"}],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"publication_identifier":{"issn":["1369-8001"]},"month":"02","volume":174,"date_created":"2024-02-22T14:10:40Z","date_updated":"2024-02-26T10:36:35Z","author":[{"full_name":"Shimura, Yosuke","first_name":"Yosuke","last_name":"Shimura"},{"full_name":"Godfrin, Clement","first_name":"Clement","last_name":"Godfrin"},{"last_name":"Hikavyy","first_name":"Andriy","full_name":"Hikavyy, Andriy"},{"first_name":"Roy","last_name":"Li","full_name":"Li, Roy"},{"id":"2A67C376-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2862-8372","first_name":"Juan L","last_name":"Aguilera Servin","full_name":"Aguilera Servin, Juan L"},{"full_name":"Katsaros, Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","first_name":"Georgios","last_name":"Katsaros"},{"first_name":"Paola","last_name":"Favia","full_name":"Favia, Paola"},{"full_name":"Han, Han","first_name":"Han","last_name":"Han"},{"full_name":"Wan, Danny","first_name":"Danny","last_name":"Wan"},{"full_name":"de Greve, Kristiaan","last_name":"de Greve","first_name":"Kristiaan"},{"full_name":"Loo, Roger","last_name":"Loo","first_name":"Roger"}],"publisher":"Elsevier","department":[{"_id":"GeKa"},{"_id":"NanoFab"}],"publication_status":"epub_ahead","year":"2024","acknowledgement":"The Ge project received funding from the European Union's Horizon Europe programme under the Grant Agreement 101069515 – IGNITE. Siltronic AG is acknowledged for providing the SRB wafers. This work was supported by Imec's Industrial Affiliation Program on Quantum Computing.","article_number":"108231","date_published":"2024-02-20T00:00:00Z","article_type":"original","citation":{"chicago":"Shimura, Yosuke, Clement Godfrin, Andriy Hikavyy, Roy Li, Juan L Aguilera Servin, Georgios Katsaros, Paola Favia, et al. “Compressively Strained Epitaxial Ge Layers for Quantum Computing Applications.” Materials Science in Semiconductor Processing. Elsevier, 2024. https://doi.org/10.1016/j.mssp.2024.108231.","mla":"Shimura, Yosuke, et al. “Compressively Strained Epitaxial Ge Layers for Quantum Computing Applications.” Materials Science in Semiconductor Processing, vol. 174, no. 5, 108231, Elsevier, 2024, doi:10.1016/j.mssp.2024.108231.","short":"Y. Shimura, C. Godfrin, A. Hikavyy, R. Li, J.L. Aguilera Servin, G. Katsaros, P. Favia, H. Han, D. Wan, K. de Greve, R. Loo, Materials Science in Semiconductor Processing 174 (2024).","ista":"Shimura Y, Godfrin C, Hikavyy A, Li R, Aguilera Servin JL, Katsaros G, Favia P, Han H, Wan D, de Greve K, Loo R. 2024. Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. 174(5), 108231.","apa":"Shimura, Y., Godfrin, C., Hikavyy, A., Li, R., Aguilera Servin, J. L., Katsaros, G., … Loo, R. (2024). Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. Elsevier. https://doi.org/10.1016/j.mssp.2024.108231","ieee":"Y. Shimura et al., “Compressively strained epitaxial Ge layers for quantum computing applications,” Materials Science in Semiconductor Processing, vol. 174, no. 5. Elsevier, 2024.","ama":"Shimura Y, Godfrin C, Hikavyy A, et al. Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. 2024;174(5). doi:10.1016/j.mssp.2024.108231"},"publication":"Materials Science in Semiconductor Processing","has_accepted_license":"1","article_processing_charge":"No","day":"20","keyword":["Mechanical Engineering","Mechanics of Materials","Condensed Matter Physics","General Materials Science"],"oa_version":"Published Version","intvolume":" 174","status":"public","ddc":["530"],"title":"Compressively strained epitaxial Ge layers for quantum computing applications","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"15018","issue":"5","abstract":[{"text":"The epitaxial growth of a strained Ge layer, which is a promising candidate for the channel material of a hole spin qubit, has been demonstrated on 300 mm Si wafers using commercially available Si0.3Ge0.7 strain relaxed buffer (SRB) layers. The assessment of the layer and the interface qualities for a buried strained Ge layer embedded in Si0.3Ge0.7 layers is reported. The XRD reciprocal space mapping confirmed that the reduction of the growth temperature enables the 2-dimensional growth of the Ge layer fully strained with respect to the Si0.3Ge0.7. Nevertheless, dislocations at the top and/or bottom interface of the Ge layer were observed by means of electron channeling contrast imaging, suggesting the importance of the careful dislocation assessment. The interface abruptness does not depend on the selection of the precursor gases, but it is strongly influenced by the growth temperature which affects the coverage of the surface H-passivation. The mobility of 2.7 × 105 cm2/Vs is promising, while the low percolation density of 3 × 1010 /cm2 measured with a Hall-bar device at 7 K illustrates the high quality of the heterostructure thanks to the high Si0.3Ge0.7 SRB quality.","lang":"eng"}],"type":"journal_article"},{"article_number":"2306.07109","ec_funded":1,"publication_status":"submitted","department":[{"_id":"GeKa"},{"_id":"M-Shop"}],"acknowledgement":"The authors acknowledge Alexander Brinkmann, Alessandro Crippa, Andrew Higginbotham, Andrea Iorio, Giordano\r\nScappucci and Christian Schonenberger for helpful discussions. We thank Marcel Verheijen for the support in the\r\nTEM analysis. This research and related results were made\r\npossible with the support of the NOMIS Foundation. It was\r\nsupported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the\r\nnanofabrication facility, the European Union’s Horizon 2020\r\nresearch and innovation programme under Grant Agreement\r\nNo 862046, the HORIZON-RIA 101069515 project and the\r\nFWF Projects #P-32235, #P-36507 and #F-8606. R.S.S.\r\nacknowledges Spanish CM “Talento Program” Project No.\r\n2022-T1/IND-24070.","year":"2023","date_updated":"2024-02-07T07:52:32Z","date_created":"2023-07-26T11:17:20Z","author":[{"full_name":"Valentini, Marco","first_name":"Marco","last_name":"Valentini","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425"},{"last_name":"Sagi","first_name":"Oliver","id":"71616374-A8E9-11E9-A7CA-09ECE5697425","full_name":"Sagi, Oliver"},{"first_name":"Levon","last_name":"Baghumyan","full_name":"Baghumyan, Levon"},{"full_name":"Gijsel, Thijs de","first_name":"Thijs de","last_name":"Gijsel"},{"full_name":"Jung, Jason","id":"4C9ACE7A-F248-11E8-B48F-1D18A9856A87","first_name":"Jason","last_name":"Jung"},{"last_name":"Calcaterra","first_name":"Stefano","full_name":"Calcaterra, Stefano"},{"full_name":"Ballabio, Andrea","last_name":"Ballabio","first_name":"Andrea"},{"full_name":"Servin, Juan Aguilera","last_name":"Servin","first_name":"Juan Aguilera"},{"full_name":"Aggarwal, Kushagra","last_name":"Aggarwal","first_name":"Kushagra","orcid":"0000-0001-9985-9293","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb"},{"last_name":"Janik","first_name":"Marian","id":"396A1950-F248-11E8-B48F-1D18A9856A87","full_name":"Janik, Marian"},{"first_name":"Thomas","last_name":"Adletzberger","id":"38756BB2-F248-11E8-B48F-1D18A9856A87","full_name":"Adletzberger, Thomas"},{"last_name":"Souto","first_name":"Rubén Seoane","full_name":"Souto, Rubén Seoane"},{"first_name":"Martin","last_name":"Leijnse","full_name":"Leijnse, Martin"},{"first_name":"Jeroen","last_name":"Danon","full_name":"Danon, Jeroen"},{"full_name":"Schrade, Constantin","last_name":"Schrade","first_name":"Constantin"},{"last_name":"Bakkers","first_name":"Erik","full_name":"Bakkers, Erik"},{"first_name":"Daniel","last_name":"Chrastina","full_name":"Chrastina, Daniel"},{"last_name":"Isella","first_name":"Giovanni","full_name":"Isella, Giovanni"},{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","first_name":"Georgios","last_name":"Katsaros","full_name":"Katsaros, Georgios"}],"related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"13286"}]},"month":"06","project":[{"_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","grant_number":"862046","call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS"},{"grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E","call_identifier":"FWF","name":"Towards scalable hut wire quantum devices"},{"name":"Merging spin and superconducting qubits in planar Ge","_id":"bd8bd29e-d553-11ed-ba76-f0070d4b237a","grant_number":"P36507"},{"grant_number":"F8606","_id":"34a66131-11ca-11ed-8bc3-a31681c6b03e","name":"Conventional and unconventional topological superconductors"},{"_id":"bd5b4ec5-d553-11ed-ba76-a6eedb083344","name":"Protected states of quantum matter"}],"external_id":{"arxiv":["2306.07109"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2306.07109","open_access":"1"}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"doi":"10.48550/arXiv.2306.07109","type":"preprint","abstract":[{"lang":"eng","text":"Superconductor/semiconductor hybrid devices have attracted increasing\r\ninterest in the past years. Superconducting electronics aims to complement\r\nsemiconductor technology, while hybrid architectures are at the forefront of\r\nnew ideas such as topological superconductivity and protected qubits. In this\r\nwork, we engineer the induced superconductivity in two-dimensional germanium\r\nhole gas by varying the distance between the quantum well and the aluminum. We\r\ndemonstrate a hard superconducting gap and realize an electrically and flux\r\ntunable superconducting diode using a superconducting quantum interference\r\ndevice (SQUID). This allows to tune the current phase relation (CPR), to a\r\nregime where single Cooper pair tunneling is suppressed, creating a $ \\sin\r\n\\left( 2 \\varphi \\right)$ CPR. Shapiro experiments complement this\r\ninterpretation and the microwave drive allows to create a diode with $ \\approx\r\n100 \\%$ efficiency. The reported results open up the path towards monolithic\r\nintegration of spin qubit devices, microwave resonators and (protected)\r\nsuperconducting qubits on a silicon technology compatible platform."}],"title":"Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas","status":"public","ddc":["530"],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"13312","oa_version":"Preprint","keyword":["Mesoscale and Nanoscale Physics"],"day":"13","article_processing_charge":"No","publication":"arXiv","citation":{"chicago":"Valentini, Marco, Oliver Sagi, Levon Baghumyan, Thijs de Gijsel, Jason Jung, Stefano Calcaterra, Andrea Ballabio, et al. “Radio Frequency Driven Superconducting Diode and Parity Conserving Cooper Pair Transport in a Two-Dimensional Germanium Hole Gas.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2306.07109.","short":"M. Valentini, O. Sagi, L. Baghumyan, T. de Gijsel, J. Jung, S. Calcaterra, A. Ballabio, J.A. Servin, K. Aggarwal, M. Janik, T. Adletzberger, R.S. Souto, M. Leijnse, J. Danon, C. Schrade, E. Bakkers, D. Chrastina, G. Isella, G. Katsaros, ArXiv (n.d.).","mla":"Valentini, Marco, et al. “Radio Frequency Driven Superconducting Diode and Parity Conserving Cooper Pair Transport in a Two-Dimensional Germanium Hole Gas.” ArXiv, 2306.07109, doi:10.48550/arXiv.2306.07109.","ieee":"M. Valentini et al., “Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas,” arXiv. .","apa":"Valentini, M., Sagi, O., Baghumyan, L., Gijsel, T. de, Jung, J., Calcaterra, S., … Katsaros, G. (n.d.). Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas. arXiv. https://doi.org/10.48550/arXiv.2306.07109","ista":"Valentini M, Sagi O, Baghumyan L, Gijsel T de, Jung J, Calcaterra S, Ballabio A, Servin JA, Aggarwal K, Janik M, Adletzberger T, Souto RS, Leijnse M, Danon J, Schrade C, Bakkers E, Chrastina D, Isella G, Katsaros G. Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas. arXiv, 2306.07109.","ama":"Valentini M, Sagi O, Baghumyan L, et al. Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas. arXiv. doi:10.48550/arXiv.2306.07109"},"date_published":"2023-06-13T00:00:00Z"},{"doi":"10.1103/PhysRevLett.128.126803","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"external_id":{"arxiv":["2111.05130"],"isi":["000786542500004"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"project":[{"grant_number":"844511","_id":"26A151DA-B435-11E9-9278-68D0E5697425","name":"Majorana bound states in Ge/SiGe heterostructures","call_identifier":"H2020"},{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"},{"grant_number":"P30207","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","name":"Hole spin orbit qubits in Ge quantum wells","call_identifier":"FWF"},{"name":"High impedance circuit quantum electrodynamics with hole spins","_id":"c0977eea-5a5b-11eb-8a69-a862db0cf4d1","grant_number":"I05060"},{"name":"Long-range spin exchange for 2D qubits architectures","_id":"c08c05c4-5a5b-11eb-8a69-dc6ce49d7973","grant_number":"M03032"}],"isi":1,"quality_controlled":"1","publication_identifier":{"eissn":["1079-7114"]},"month":"03","author":[{"full_name":"Jirovec, Daniel","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7197-4801","first_name":"Daniel","last_name":"Jirovec"},{"last_name":"Mutter","first_name":"Philipp M.","full_name":"Mutter, Philipp M."},{"id":"340F461A-F248-11E8-B48F-1D18A9856A87","last_name":"Hofmann","first_name":"Andrea C","full_name":"Hofmann, Andrea C"},{"orcid":"0000-0002-2968-611X","id":"1F2B21A2-F6E7-11E9-9B82-F7DBE5697425","last_name":"Crippa","first_name":"Alessandro","full_name":"Crippa, Alessandro"},{"first_name":"Marek","last_name":"Rychetsky","full_name":"Rychetsky, Marek"},{"full_name":"Craig, David L.","last_name":"Craig","first_name":"David L."},{"full_name":"Kukucka, Josip","first_name":"Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Martins, Frederico","first_name":"Frederico","last_name":"Martins","id":"38F80F9A-1CB8-11EA-BC76-B49B3DDC885E","orcid":"0000-0003-2668-2401"},{"first_name":"Andrea","last_name":"Ballabio","full_name":"Ballabio, Andrea"},{"full_name":"Ares, Natalia","last_name":"Ares","first_name":"Natalia"},{"full_name":"Chrastina, Daniel","first_name":"Daniel","last_name":"Chrastina"},{"full_name":"Isella, Giovanni","last_name":"Isella","first_name":"Giovanni"},{"full_name":"Burkard, Guido ","first_name":"Guido ","last_name":"Burkard"},{"first_name":"Georgios","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","full_name":"Katsaros, Georgios"}],"volume":128,"date_created":"2022-03-24T15:51:11Z","date_updated":"2023-08-03T06:14:58Z","year":"2022","acknowledgement":"This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the nanofabrication facility. This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie\r\nSkłodowska-Curie Grant Agreement No. 844511, No. 75441, and by the FWF-P 30207, I05060, and M3032-N projects. A. B. acknowledges support from the EU Horizon-2020 FET project microSPIRE, ID: 766955. P.M. M. and G. B. acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG—German Research Foundation) under Project No. 450396347. This work was supported by the Royal Society (URF\\R1\\191150) and the European Research Council (Grant Agreement No. 948932), N. A. acknowledges the use of the University of Oxford Advanced Research Computing (ARC) facility.","department":[{"_id":"GradSch"},{"_id":"GeKa"}],"publisher":"American Physical Society","publication_status":"published","ec_funded":1,"file_date_updated":"2022-03-28T06:53:39Z","article_number":"126803","date_published":"2022-03-24T00:00:00Z","citation":{"chicago":"Jirovec, Daniel, Philipp M. Mutter, Andrea C Hofmann, Alessandro Crippa, Marek Rychetsky, David L. Craig, Josip Kukucka, et al. “Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences.” Physical Review Letters. American Physical Society, 2022. https://doi.org/10.1103/PhysRevLett.128.126803.","mla":"Jirovec, Daniel, et al. “Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences.” Physical Review Letters, vol. 128, no. 12, 126803, American Physical Society, 2022, doi:10.1103/PhysRevLett.128.126803.","short":"D. Jirovec, P.M. Mutter, A.C. Hofmann, A. Crippa, M. Rychetsky, D.L. Craig, J. Kukucka, F. Martins, A. Ballabio, N. Ares, D. Chrastina, G. Isella, G. Burkard, G. Katsaros, Physical Review Letters 128 (2022).","ista":"Jirovec D, Mutter PM, Hofmann AC, Crippa A, Rychetsky M, Craig DL, Kukucka J, Martins F, Ballabio A, Ares N, Chrastina D, Isella G, Burkard G, Katsaros G. 2022. Dynamics of hole singlet-triplet qubits with large g-factor differences. Physical Review Letters. 128(12), 126803.","ieee":"D. Jirovec et al., “Dynamics of hole singlet-triplet qubits with large g-factor differences,” Physical Review Letters, vol. 128, no. 12. American Physical Society, 2022.","apa":"Jirovec, D., Mutter, P. M., Hofmann, A. C., Crippa, A., Rychetsky, M., Craig, D. L., … Katsaros, G. (2022). Dynamics of hole singlet-triplet qubits with large g-factor differences. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.128.126803","ama":"Jirovec D, Mutter PM, Hofmann AC, et al. Dynamics of hole singlet-triplet qubits with large g-factor differences. Physical Review Letters. 2022;128(12). doi:10.1103/PhysRevLett.128.126803"},"publication":"Physical Review Letters","article_type":"original","article_processing_charge":"No","has_accepted_license":"1","day":"24","file":[{"creator":"dernst","content_type":"application/pdf","file_size":1266515,"access_level":"open_access","file_name":"2022_PhysRevLetters_Jirovec.pdf","success":1,"checksum":"6e66ad548d18db9c131f304acbd5a1f4","date_created":"2022-03-28T06:53:39Z","date_updated":"2022-03-28T06:53:39Z","file_id":"10928","relation":"main_file"}],"oa_version":"Published Version","_id":"10920","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":" 128","ddc":["530"],"status":"public","title":"Dynamics of hole singlet-triplet qubits with large g-factor differences","issue":"12","abstract":[{"text":"The spin-orbit interaction permits to control the state of a spin qubit via electric fields. For holes it is particularly strong, allowing for fast all electrical qubit manipulation, and yet an in-depth understanding of this interaction in hole systems is missing. Here we investigate, experimentally and theoretically, the effect of the cubic Rashba spin-orbit interaction on the mixing of the spin states by studying singlet-triplet oscillations in a planar Ge hole double quantum dot. Landau-Zener sweeps at different magnetic field directions allow us to disentangle the effects of the spin-orbit induced spin-flip term from those caused by strongly site-dependent and anisotropic quantum dot g tensors. Our work, therefore, provides new insights into the hole spin-orbit interaction, necessary for optimizing future qubit experiments.","lang":"eng"}],"type":"journal_article"},{"date_published":"2022-12-15T00:00:00Z","citation":{"chicago":"Valentini, Marco, Maksim Borovkov, Elsa Prada, Sara Martí-Sánchez, Marc Botifoll, Andrea C Hofmann, Jordi Arbiol, Ramón Aguado, Pablo San-Jose, and Georgios Katsaros. “Majorana-like Coulomb Spectroscopy in the Absence of Zero-Bias Peaks.” Nature. Springer Nature, 2022. https://doi.org/10.1038/s41586-022-05382-w.","mla":"Valentini, Marco, et al. “Majorana-like Coulomb Spectroscopy in the Absence of Zero-Bias Peaks.” Nature, vol. 612, no. 7940, Springer Nature, 2022, pp. 442–47, doi:10.1038/s41586-022-05382-w.","short":"M. Valentini, M. Borovkov, E. Prada, S. Martí-Sánchez, M. Botifoll, A.C. Hofmann, J. Arbiol, R. Aguado, P. San-Jose, G. Katsaros, Nature 612 (2022) 442–447.","ista":"Valentini M, Borovkov M, Prada E, Martí-Sánchez S, Botifoll M, Hofmann AC, Arbiol J, Aguado R, San-Jose P, Katsaros G. 2022. Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. Nature. 612(7940), 442–447.","ieee":"M. Valentini et al., “Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks,” Nature, vol. 612, no. 7940. Springer Nature, pp. 442–447, 2022.","apa":"Valentini, M., Borovkov, M., Prada, E., Martí-Sánchez, S., Botifoll, M., Hofmann, A. C., … Katsaros, G. (2022). Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. Nature. Springer Nature. https://doi.org/10.1038/s41586-022-05382-w","ama":"Valentini M, Borovkov M, Prada E, et al. Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks. Nature. 2022;612(7940):442-447. doi:10.1038/s41586-022-05382-w"},"publication":"Nature","page":"442-447","article_type":"original","article_processing_charge":"No","day":"15","scopus_import":"1","keyword":["Multidisciplinary"],"oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"12118","intvolume":" 612","title":"Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks","status":"public","issue":"7940","abstract":[{"lang":"eng","text":"Hybrid semiconductor–superconductor devices hold great promise for realizing topological quantum computing with Majorana zero modes1,2,3,4,5. However, multiple claims of Majorana detection, based on either tunnelling6,7,8,9,10 or Coulomb blockade (CB) spectroscopy11,12, remain disputed. Here we devise an experimental protocol that allows us to perform both types of measurement on the same hybrid island by adjusting its charging energy via tunable junctions to the normal leads. This method reduces ambiguities of Majorana detections by checking the consistency between CB spectroscopy and zero-bias peaks in non-blockaded transport. Specifically, we observe junction-dependent, even–odd modulated, single-electron CB peaks in InAs/Al hybrid nanowires without concomitant low-bias peaks in tunnelling spectroscopy. We provide a theoretical interpretation of the experimental observations in terms of low-energy, longitudinally confined island states rather than overlapping Majorana modes. Our results highlight the importance of combined measurements on the same device for the identification of topological Majorana zero modes."}],"type":"journal_article","doi":"10.1038/s41586-022-05382-w","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"oa":1,"main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2203.07829","open_access":"1"}],"external_id":{"isi":["000899725400001"],"arxiv":["2203.07829"]},"project":[{"call_identifier":"H2020","name":"Majorana bound states in Ge/SiGe heterostructures","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511"}],"quality_controlled":"1","isi":1,"publication_identifier":{"issn":["0028-0836"],"eissn":["1476-4687"]},"month":"12","related_material":{"link":[{"url":"https://ista.ac.at/en/news/imposter-particles-revealed-and-explained/","description":"News on ISTA Website","relation":"press_release"}],"record":[{"id":"13286","relation":"dissertation_contains","status":"public"},{"id":"12522","relation":"research_data","status":"public"}]},"author":[{"first_name":"Marco","last_name":"Valentini","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","full_name":"Valentini, Marco"},{"full_name":"Borovkov, Maksim","first_name":"Maksim","last_name":"Borovkov","id":"2ac7a0a2-3562-11eb-9256-fbd18ea55087"},{"last_name":"Prada","first_name":"Elsa","full_name":"Prada, Elsa"},{"first_name":"Sara","last_name":"Martí-Sánchez","full_name":"Martí-Sánchez, Sara"},{"full_name":"Botifoll, Marc","first_name":"Marc","last_name":"Botifoll"},{"full_name":"Hofmann, Andrea C","first_name":"Andrea C","last_name":"Hofmann","id":"340F461A-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Arbiol, Jordi","last_name":"Arbiol","first_name":"Jordi"},{"full_name":"Aguado, Ramón","first_name":"Ramón","last_name":"Aguado"},{"last_name":"San-Jose","first_name":"Pablo","full_name":"San-Jose, Pablo"},{"orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios","full_name":"Katsaros, Georgios"}],"volume":612,"date_updated":"2024-02-21T12:35:33Z","date_created":"2023-01-12T11:56:45Z","year":"2022","acknowledgement":"We thank P. Krogstrup for providing us with the NW materials. We thank A. Higginbotham, E. J. H. Lee, C. Marcus and S. Vaitiekėnas for helpful discussions and G. Steffensen for his input on the diffusive Little-Parks theory. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the nanofabrication facility; the NOMIS Foundation; the CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+). A.H. acknowledges support from H2020-MSCA-IF-2018/844511. ICN2 also acknowledges funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa Program from Spanish MINECO (Grant no. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD programme. Authors acknowledge the use of instrumentation as well as the technical advice provided by the National Facility ELECMI ICTS, node ‘Laboratorio de Microscopías Avanzadas’ at University of Zaragoza. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 823717-ESTEEM3. This study was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and Generalitat de Catalunya. This research is part of the CSIC programme for the Spanish Recovery, Transformation and Resilience Plan funded by the Recovery and Resilience Facility of the European Union, established by the Regulation (EU) 2020/2094. We thank support from Grant PGC2018-097018-BI00, project FlagERA TOPOGRAPH (PCI2018-093026) and project NANOGEN (PID2020-116093RB-C43), funded by MCIN/AEI/10.13039/501100011033/ and by ‘ERDF A way of making Europe’, by the European Union. M. Botifoll acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund (project ref. 2020 FI 00103).","publisher":"Springer Nature","department":[{"_id":"GeKa"}],"publication_status":"published","ec_funded":1},{"scopus_import":"1","article_processing_charge":"No","day":"08","citation":{"chicago":"Gao, Fei, Jie Yin Zhang, Jian Huan Wang, Ming Ming, Tina Wang, Jian Jun Zhang, Hannes Watzinger, et al. “Ge/Si Quantum Wires for Quantum Computing.” In 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. IEEE, 2021. https://doi.org/10.1109/EDTM50988.2021.9420817.","mla":"Gao, Fei, et al. “Ge/Si Quantum Wires for Quantum Computing.” 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, 9420817, IEEE, 2021, doi:10.1109/EDTM50988.2021.9420817.","short":"F. Gao, J.Y. Zhang, J.H. Wang, M. Ming, T. Wang, J.J. Zhang, H. Watzinger, J. Kukucka, L. Vukušić, G. Katsaros, K. Wang, G. Xu, H.O. Li, G.P. Guo, in:, 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, IEEE, 2021.","ista":"Gao F, Zhang JY, Wang JH, Ming M, Wang T, Zhang JJ, Watzinger H, Kukucka J, Vukušić L, Katsaros G, Wang K, Xu G, Li HO, Guo GP. 2021. Ge/Si quantum wires for quantum computing. 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. EDTM: IEEE Electron Devices Technology and Manufacturing Conference, 9420817.","ieee":"F. Gao et al., “Ge/Si quantum wires for quantum computing,” in 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, Virtual, Online, 2021.","apa":"Gao, F., Zhang, J. Y., Wang, J. H., Ming, M., Wang, T., Zhang, J. J., … Guo, G. P. (2021). Ge/Si quantum wires for quantum computing. In 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. Virtual, Online: IEEE. https://doi.org/10.1109/EDTM50988.2021.9420817","ama":"Gao F, Zhang JY, Wang JH, et al. Ge/Si quantum wires for quantum computing. In: 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. IEEE; 2021. doi:10.1109/EDTM50988.2021.9420817"},"publication":"2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021","date_published":"2021-04-08T00:00:00Z","type":"conference","abstract":[{"lang":"eng","text":"We firstly introduce the self-assembled growth of highly uniform Ge quantum wires with controllable position, distance and length on patterned Si (001) substrates. We then present the electrically tunable strong spin-orbit coupling, the first Ge hole spin qubit and ultrafast operation of hole spin qubit in the Ge/Si quantum wires."}],"title":"Ge/Si quantum wires for quantum computing","status":"public","_id":"9464","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"None","publication_identifier":{"isbn":["9781728181769"]},"month":"04","project":[{"name":"Towards Spin qubits and Majorana fermions in Germanium selfassembled hut-wires","call_identifier":"FP7","grant_number":"335497","_id":"25517E86-B435-11E9-9278-68D0E5697425"}],"isi":1,"quality_controlled":"1","external_id":{"isi":["000675595800006"]},"language":[{"iso":"eng"}],"doi":"10.1109/EDTM50988.2021.9420817","conference":{"name":"EDTM: IEEE Electron Devices Technology and Manufacturing Conference","end_date":"2021-04-11","location":"Virtual, Online","start_date":"2021-04-08"},"article_number":"9420817","ec_funded":1,"department":[{"_id":"GeKa"}],"publisher":"IEEE","publication_status":"published","acknowledgement":"This work was supported by the National Key R&D Program of China (Grant No. 2016YFA0301700) and the ERC Starting Grant no. 335497.","year":"2021","date_created":"2021-06-06T22:01:29Z","date_updated":"2023-10-03T12:51:59Z","author":[{"full_name":"Gao, Fei","last_name":"Gao","first_name":"Fei"},{"first_name":"Jie Yin","last_name":"Zhang","full_name":"Zhang, Jie Yin"},{"first_name":"Jian Huan","last_name":"Wang","full_name":"Wang, Jian Huan"},{"full_name":"Ming, Ming","last_name":"Ming","first_name":"Ming"},{"full_name":"Wang, Tina","first_name":"Tina","last_name":"Wang"},{"full_name":"Zhang, Jian Jun","last_name":"Zhang","first_name":"Jian Jun"},{"id":"35DF8E50-F248-11E8-B48F-1D18A9856A87","first_name":"Hannes","last_name":"Watzinger","full_name":"Watzinger, Hannes"},{"first_name":"Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","full_name":"Kukucka, Josip"},{"last_name":"Vukušić","first_name":"Lada","orcid":"0000-0003-2424-8636","id":"31E9F056-F248-11E8-B48F-1D18A9856A87","full_name":"Vukušić, Lada"},{"first_name":"Georgios","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios"},{"last_name":"Wang","first_name":"Ke","full_name":"Wang, Ke"},{"first_name":"Gang","last_name":"Xu","full_name":"Xu, Gang"},{"first_name":"Hai Ou","last_name":"Li","full_name":"Li, Hai Ou"},{"full_name":"Guo, Guo Ping","last_name":"Guo","first_name":"Guo Ping"}]},{"date_created":"2021-03-27T13:47:49Z","date_updated":"2024-02-21T12:37:14Z","file":[{"creator":"gkatsaro","file_size":10616071,"content_type":"application/x-zip-compressed","access_level":"open_access","file_name":"Raw Data- Enhancement of Superconductivity in a Planar Ge hole gas.zip","success":1,"checksum":"635df3c08fc13c3dac008cd421aefbe4","date_updated":"2021-03-27T13:46:17Z","date_created":"2021-03-27T13:46:17Z","file_id":"9292","relation":"main_file"},{"file_id":"9302","relation":"main_file","date_created":"2021-04-01T07:52:56Z","date_updated":"2021-04-01T07:52:56Z","success":1,"checksum":"12b3ca69ae7509a346711baae0b02a75","file_name":"README.txt","access_level":"open_access","creator":"dernst","file_size":470,"content_type":"text/plain"}],"oa_version":"Published Version","author":[{"orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios","full_name":"Katsaros, Georgios"}],"status":"public","title":"Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium","ddc":["530"],"publisher":"Institute of Science and Technology Austria","department":[{"_id":"GeKa"}],"year":"2021","_id":"9291","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","license":"https://creativecommons.org/publicdomain/zero/1.0/","abstract":[{"text":"This .zip File contains the transport data for figures presented in the main text and supplementary material of \"Enhancement of Proximity Induced Superconductivity in Planar Germanium\" by K. Aggarwal, et. al. \r\nThe measurements were done using Labber Software and the data is stored in the hdf5 file format. The files can be opened using either the Labber Log Browser (https://labber.org/overview/) or Labber Python API (http://labber.org/online-doc/api/LogFile.html).","lang":"eng"}],"file_date_updated":"2021-04-01T07:52:56Z","type":"research_data","date_published":"2021-03-29T00:00:00Z","doi":"10.15479/AT:ISTA:9291","citation":{"ama":"Katsaros G. Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium. 2021. doi:10.15479/AT:ISTA:9291","ieee":"G. Katsaros, “Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium.” Institute of Science and Technology Austria, 2021.","apa":"Katsaros, G. (2021). Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:9291","ista":"Katsaros G. 2021. Raw transport data for: Enhancement of proximity induced superconductivity in planar germanium, Institute of Science and Technology Austria, 10.15479/AT:ISTA:9291.","short":"G. Katsaros, (2021).","mla":"Katsaros, Georgios. Raw Transport Data for: Enhancement of Proximity Induced Superconductivity in Planar Germanium. Institute of Science and Technology Austria, 2021, doi:10.15479/AT:ISTA:9291.","chicago":"Katsaros, Georgios. “Raw Transport Data for: Enhancement of Proximity Induced Superconductivity in Planar Germanium.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/AT:ISTA:9291."},"tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"oa":1,"day":"29","month":"03","article_processing_charge":"No","has_accepted_license":"1"},{"oa_version":"Submitted Version","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"8910","intvolume":" 373","status":"public","title":"Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states","issue":"6550","abstract":[{"lang":"eng","text":"A semiconducting nanowire fully wrapped by a superconducting shell has been proposed as a platform for obtaining Majorana modes at small magnetic fields. In this study, we demonstrate that the appearance of subgap states in such structures is actually governed by the junction region in tunneling spectroscopy measurements and not the full-shell nanowire itself. Short tunneling regions never show subgap states, whereas longer junctions always do. This can be understood in terms of quantum dots forming in the junction and hosting Andreev levels in the Yu-Shiba-Rusinov regime. The intricate magnetic field dependence of the Andreev levels, through both the Zeeman and Little-Parks effects, may result in robust zero-bias peaks—features that could be easily misinterpreted as originating from Majorana zero modes but are unrelated to topological superconductivity."}],"type":"journal_article","date_published":"2021-07-02T00:00:00Z","citation":{"ama":"Valentini M, Peñaranda F, Hofmann AC, et al. Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. Science. 2021;373(6550). doi:10.1126/science.abf1513","ista":"Valentini M, Peñaranda F, Hofmann AC, Brauns M, Hauschild R, Krogstrup P, San-Jose P, Prada E, Aguado R, Katsaros G. 2021. Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. Science. 373(6550), 82–88.","apa":"Valentini, M., Peñaranda, F., Hofmann, A. C., Brauns, M., Hauschild, R., Krogstrup, P., … Katsaros, G. (2021). Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.abf1513","ieee":"M. Valentini et al., “Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states,” Science, vol. 373, no. 6550. American Association for the Advancement of Science, 2021.","mla":"Valentini, Marco, et al. “Nontopological Zero-Bias Peaks in Full-Shell Nanowires Induced by Flux-Tunable Andreev States.” Science, vol. 373, no. 6550, 82–88, American Association for the Advancement of Science, 2021, doi:10.1126/science.abf1513.","short":"M. Valentini, F. Peñaranda, A.C. Hofmann, M. Brauns, R. Hauschild, P. Krogstrup, P. San-Jose, E. Prada, R. Aguado, G. Katsaros, Science 373 (2021).","chicago":"Valentini, Marco, Fernando Peñaranda, Andrea C Hofmann, Matthias Brauns, Robert Hauschild, Peter Krogstrup, Pablo San-Jose, Elsa Prada, Ramón Aguado, and Georgios Katsaros. “Nontopological Zero-Bias Peaks in Full-Shell Nanowires Induced by Flux-Tunable Andreev States.” Science. American Association for the Advancement of Science, 2021. https://doi.org/10.1126/science.abf1513."},"publication":"Science","article_type":"original","article_processing_charge":"No","day":"02","scopus_import":"1","related_material":{"link":[{"url":"https://ist.ac.at/en/news/unfinding-a-split-electron/","relation":"press_release","description":"News on IST Homepage"}],"record":[{"status":"public","relation":"dissertation_contains","id":"13286"},{"relation":"research_data","status":"public","id":"9389"}]},"author":[{"first_name":"Marco","last_name":"Valentini","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425","full_name":"Valentini, Marco"},{"full_name":"Peñaranda, Fernando","first_name":"Fernando","last_name":"Peñaranda"},{"full_name":"Hofmann, Andrea C","id":"340F461A-F248-11E8-B48F-1D18A9856A87","last_name":"Hofmann","first_name":"Andrea C"},{"full_name":"Brauns, Matthias","last_name":"Brauns","first_name":"Matthias","id":"33F94E3C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Hauschild","first_name":"Robert","orcid":"0000-0001-9843-3522","id":"4E01D6B4-F248-11E8-B48F-1D18A9856A87","full_name":"Hauschild, Robert"},{"full_name":"Krogstrup, Peter","first_name":"Peter","last_name":"Krogstrup"},{"full_name":"San-Jose, Pablo","first_name":"Pablo","last_name":"San-Jose"},{"full_name":"Prada, Elsa","last_name":"Prada","first_name":"Elsa"},{"first_name":"Ramón","last_name":"Aguado","full_name":"Aguado, Ramón"},{"first_name":"Georgios","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios"}],"volume":373,"date_created":"2020-12-02T10:51:52Z","date_updated":"2024-02-21T12:40:09Z","acknowledgement":"The authors thank A. Higginbotham, E. J. H. Lee and F. R. Martins for helpful discussions. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility; the NOMIS Foundation and Microsoft; the European Union’s Horizon 2020 research and innovation program under the Marie SklodowskaCurie grant agreement No 844511; the FETOPEN Grant Agreement No. 828948; the European Research Commission through the grant agreement HEMs-DAM No 716655; the Spanish Ministry of Science and Innovation through Grants PGC2018-097018-B-I00, PCI2018-093026, FIS2016-80434-P (AEI/FEDER, EU), RYC2011-09345 (Ram´on y Cajal Programme), and the Mar´ıa de Maeztu Programme for Units of Excellence in R&D (CEX2018-000805-M); the CSIC Research Platform on Quantum Technologies PTI-001.","year":"2021","publisher":"American Association for the Advancement of Science","department":[{"_id":"GeKa"},{"_id":"Bio"}],"publication_status":"published","ec_funded":1,"article_number":"82-88","doi":"10.1126/science.abf1513","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"oa":1,"external_id":{"isi":["000677843100034"],"arxiv":["2008.02348"]},"main_file_link":[{"url":"https://arxiv.org/abs/2008.02348","open_access":"1"}],"project":[{"_id":"262116AA-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"},{"name":"Majorana bound states in Ge/SiGe heterostructures","call_identifier":"H2020","grant_number":"844511","_id":"26A151DA-B435-11E9-9278-68D0E5697425"}],"quality_controlled":"1","isi":1,"publication_identifier":{"eissn":["10959203"],"issn":["00368075"]},"month":"07"},{"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"arxiv":["2012.00322"]},"oa":1,"quality_controlled":"1","project":[{"call_identifier":"H2020","name":"Majorana bound states in Ge/SiGe heterostructures","grant_number":"844511","_id":"26A151DA-B435-11E9-9278-68D0E5697425"},{"name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","call_identifier":"H2020","grant_number":"862046","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E"}],"doi":"10.1103/physrevresearch.3.l022005","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"month":"04","publication_identifier":{"issn":["2643-1564"]},"acknowledgement":"This research and related results were made possible with the support of the NOMIS Foundation. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant agreement No. 844511 Grant Agreement No. 862046. ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autnoma de Barcelona Materials Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon-Universidad de Zaragoza. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. We acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001. This project has received funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 823717 ESTEEM3. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. G.S. and M.V. acknowledge support through a projectruimte grant associated with the Netherlands Organization of Scientific Research (NWO). J.D. acknowledges support through FRIPRO-project 274853, which is funded by the Research Council of Norway.","year":"2021","publication_status":"published","publisher":"American Physical Society","department":[{"_id":"GeKa"}],"author":[{"full_name":"Aggarwal, Kushagra","orcid":"0000-0001-9985-9293","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb","last_name":"Aggarwal","first_name":"Kushagra"},{"id":"340F461A-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea C","last_name":"Hofmann","full_name":"Hofmann, Andrea C"},{"first_name":"Daniel","last_name":"Jirovec","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7197-4801","full_name":"Jirovec, Daniel"},{"last_name":"Prieto Gonzalez","first_name":"Ivan","orcid":"0000-0002-7370-5357","id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","full_name":"Prieto Gonzalez, Ivan"},{"first_name":"Amir","last_name":"Sammak","full_name":"Sammak, Amir"},{"full_name":"Botifoll, Marc","first_name":"Marc","last_name":"Botifoll"},{"first_name":"Sara","last_name":"Martí-Sánchez","full_name":"Martí-Sánchez, Sara"},{"last_name":"Veldhorst","first_name":"Menno","full_name":"Veldhorst, Menno"},{"last_name":"Arbiol","first_name":"Jordi","full_name":"Arbiol, Jordi"},{"last_name":"Scappucci","first_name":"Giordano","full_name":"Scappucci, Giordano"},{"full_name":"Danon, Jeroen","last_name":"Danon","first_name":"Jeroen"},{"orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios","full_name":"Katsaros, Georgios"}],"related_material":{"record":[{"id":"8831","status":"public","relation":"earlier_version"},{"relation":"research_data","status":"public","id":"8834"}]},"date_created":"2021-12-16T18:50:57Z","date_updated":"2024-02-21T12:41:26Z","volume":3,"article_number":"L022005","file_date_updated":"2021-12-17T08:12:37Z","ec_funded":1,"publication":"Physical Review Research","citation":{"short":"K. Aggarwal, A.C. Hofmann, D. Jirovec, I. Prieto Gonzalez, A. Sammak, M. Botifoll, S. Martí-Sánchez, M. Veldhorst, J. Arbiol, G. Scappucci, J. Danon, G. Katsaros, Physical Review Research 3 (2021).","mla":"Aggarwal, Kushagra, et al. “Enhancement of Proximity-Induced Superconductivity in a Planar Ge Hole Gas.” Physical Review Research, vol. 3, no. 2, L022005, American Physical Society, 2021, doi:10.1103/physrevresearch.3.l022005.","chicago":"Aggarwal, Kushagra, Andrea C Hofmann, Daniel Jirovec, Ivan Prieto Gonzalez, Amir Sammak, Marc Botifoll, Sara Martí-Sánchez, et al. “Enhancement of Proximity-Induced Superconductivity in a Planar Ge Hole Gas.” Physical Review Research. American Physical Society, 2021. https://doi.org/10.1103/physrevresearch.3.l022005.","ama":"Aggarwal K, Hofmann AC, Jirovec D, et al. Enhancement of proximity-induced superconductivity in a planar Ge hole gas. Physical Review Research. 2021;3(2). doi:10.1103/physrevresearch.3.l022005","ieee":"K. Aggarwal et al., “Enhancement of proximity-induced superconductivity in a planar Ge hole gas,” Physical Review Research, vol. 3, no. 2. American Physical Society, 2021.","apa":"Aggarwal, K., Hofmann, A. C., Jirovec, D., Prieto Gonzalez, I., Sammak, A., Botifoll, M., … Katsaros, G. (2021). Enhancement of proximity-induced superconductivity in a planar Ge hole gas. Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.3.l022005","ista":"Aggarwal K, Hofmann AC, Jirovec D, Prieto Gonzalez I, Sammak A, Botifoll M, Martí-Sánchez S, Veldhorst M, Arbiol J, Scappucci G, Danon J, Katsaros G. 2021. Enhancement of proximity-induced superconductivity in a planar Ge hole gas. Physical Review Research. 3(2), L022005."},"article_type":"original","date_published":"2021-04-15T00:00:00Z","scopus_import":"1","keyword":["general engineering"],"day":"15","article_processing_charge":"No","has_accepted_license":"1","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10559","title":"Enhancement of proximity-induced superconductivity in a planar Ge hole gas","status":"public","ddc":["620"],"intvolume":" 3","oa_version":"Published Version","file":[{"checksum":"60a1bc9c9b616b1b155044bb8cfc6484","success":1,"date_created":"2021-12-17T08:12:37Z","date_updated":"2021-12-17T08:12:37Z","relation":"main_file","file_id":"10561","content_type":"application/pdf","file_size":1917512,"creator":"cchlebak","access_level":"open_access","file_name":"2021_PhysRevResearch_Aggarwal.pdf"}],"type":"journal_article","abstract":[{"text":"Hole gases in planar germanium can have high mobilities in combination with strong spin-orbit interaction and electrically tunable g factors, and are therefore emerging as a promising platform for creating hybrid superconductor-semiconductor devices. A key challenge towards hybrid Ge-based quantum technologies is the design of high-quality interfaces and superconducting contacts that are robust against magnetic fields. In this work, by combining the assets of aluminum, which provides good contact to the Ge, and niobium, which has a significant superconducting gap, we demonstrate highly transparent low-disordered JoFETs with relatively large ICRN products that are capable of withstanding high magnetic fields. We furthermore demonstrate the ability of phase-biasing individual JoFETs, opening up an avenue to explore topological superconductivity in planar Ge. The persistence of superconductivity in the reported hybrid devices beyond 1.8 T paves the way towards integrating spin qubits and proximity-induced superconductivity on the same chip.","lang":"eng"}],"issue":"2"},{"oa_version":"Preprint","title":"The germanium quantum information route","status":"public","intvolume":" 6","_id":"8911","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"In the worldwide endeavor for disruptive quantum technologies, germanium is emerging as a versatile material to realize devices capable of encoding, processing, or transmitting quantum information. These devices leverage special properties of the germanium valence-band states, commonly known as holes, such as their inherently strong spin-orbit coupling and the ability to host superconducting pairing correlations. In this Review, we initially introduce the physics of holes in low-dimensional germanium structures with key insights from a theoretical perspective. We then examine the material science progress underpinning germanium-based planar heterostructures and nanowires. We review the most significant experimental results demonstrating key building blocks for quantum technology, such as an electrically driven universal quantum gate set with spin qubits in quantum dots and superconductor-semiconductor devices for hybrid quantum systems. We conclude by identifying the most promising prospects\r\ntoward scalable quantum information processing. ","lang":"eng"}],"type":"journal_article","date_published":"2021-10-01T00:00:00Z","article_type":"original","page":"926–943 ","publication":"Nature Reviews Materials","citation":{"short":"G. Scappucci, C. Kloeffel, F.A. Zwanenburg, D. Loss, M. Myronov, J.-J. Zhang, S.D. Franceschi, G. Katsaros, M. Veldhorst, Nature Reviews Materials 6 (2021) 926–943.","mla":"Scappucci, Giordano, et al. “The Germanium Quantum Information Route.” Nature Reviews Materials, vol. 6, Springer Nature, 2021, pp. 926–943, doi:10.1038/s41578-020-00262-z.","chicago":"Scappucci, Giordano, Christoph Kloeffel, Floris A. Zwanenburg, Daniel Loss, Maksym Myronov, Jian-Jun Zhang, Silvano De Franceschi, Georgios Katsaros, and Menno Veldhorst. “The Germanium Quantum Information Route.” Nature Reviews Materials. Springer Nature, 2021. https://doi.org/10.1038/s41578-020-00262-z.","ama":"Scappucci G, Kloeffel C, Zwanenburg FA, et al. The germanium quantum information route. Nature Reviews Materials. 2021;6:926–943. doi:10.1038/s41578-020-00262-z","ieee":"G. Scappucci et al., “The germanium quantum information route,” Nature Reviews Materials, vol. 6. Springer Nature, pp. 926–943, 2021.","apa":"Scappucci, G., Kloeffel, C., Zwanenburg, F. A., Loss, D., Myronov, M., Zhang, J.-J., … Veldhorst, M. (2021). The germanium quantum information route. Nature Reviews Materials. Springer Nature. https://doi.org/10.1038/s41578-020-00262-z","ista":"Scappucci G, Kloeffel C, Zwanenburg FA, Loss D, Myronov M, Zhang J-J, Franceschi SD, Katsaros G, Veldhorst M. 2021. The germanium quantum information route. Nature Reviews Materials. 6, 926–943."},"day":"01","article_processing_charge":"No","scopus_import":"1","date_updated":"2024-03-07T14:48:57Z","date_created":"2020-12-02T10:52:51Z","volume":6,"author":[{"full_name":"Scappucci, Giordano","first_name":"Giordano","last_name":"Scappucci"},{"full_name":"Kloeffel, Christoph","last_name":"Kloeffel","first_name":"Christoph"},{"full_name":"Zwanenburg, Floris A.","last_name":"Zwanenburg","first_name":"Floris A."},{"full_name":"Loss, Daniel","first_name":"Daniel","last_name":"Loss"},{"full_name":"Myronov, Maksym","last_name":"Myronov","first_name":"Maksym"},{"full_name":"Zhang, Jian-Jun","last_name":"Zhang","first_name":"Jian-Jun"},{"full_name":"Franceschi, Silvano De","first_name":"Silvano De","last_name":"Franceschi"},{"full_name":"Katsaros, Georgios","last_name":"Katsaros","first_name":"Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Veldhorst","first_name":"Menno","full_name":"Veldhorst, Menno"}],"publication_status":"published","publisher":"Springer Nature","department":[{"_id":"GeKa"}],"acknowledgement":"G.S., M.W.,F.A.Z acknowledge financial support from The Netherlands Organization for Scientific Research (NWO). F.Z., D.L., G.K. acknowledge funding from the European Union’s Horizon 2020 research and innovation programme under Grand Agreement Nr. 862046. G.K. acknowledges funding from FP7 ERC Starting Grant 335497, FWF Y 715-N30, FWF P-30207. S.D. acknowledges support from the European Union’s Horizon 2020 program under Grant\r\nAgreement No. 81050 and from the Agence Nationale de la Recherche through the TOPONANO and CMOSQSPIN projects. J.Z. acknowledges support from the National Key R&D Program of China (Grant No. 2016YFA0301701) and Strategic Priority Research Program of CAS (Grant No. XDB30000000). D.L. and C.K. acknowledge the Swiss National Science Foundation and NCCR QSIT.","year":"2021","ec_funded":1,"language":[{"iso":"eng"}],"doi":"10.1038/s41578-020-00262-z","quality_controlled":"1","isi":1,"project":[{"_id":"25517E86-B435-11E9-9278-68D0E5697425","grant_number":"335497","name":"Towards Spin qubits and Majorana fermions in Germanium selfassembled hut-wires","call_identifier":"FP7"},{"call_identifier":"FWF","name":"Loch Spin-Qubits und Majorana-Fermionen in Germanium","grant_number":"Y00715","_id":"2552F888-B435-11E9-9278-68D0E5697425"},{"name":"Hole spin orbit qubits in Ge quantum wells","call_identifier":"FWF","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","grant_number":"P30207"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2004.08133"}],"external_id":{"arxiv":["2004.08133"],"isi":["000600826100003"]},"oa":1,"month":"10","publication_identifier":{"eissn":["2058-8437"]}},{"date_created":"2020-12-02T10:50:47Z","date_updated":"2024-03-28T23:30:27Z","volume":20,"author":[{"first_name":"Daniel","last_name":"Jirovec","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7197-4801","full_name":"Jirovec, Daniel"},{"id":"340F461A-F248-11E8-B48F-1D18A9856A87","last_name":"Hofmann","first_name":"Andrea C","full_name":"Hofmann, Andrea C"},{"full_name":"Ballabio, Andrea","last_name":"Ballabio","first_name":"Andrea"},{"last_name":"Mutter","first_name":"Philipp M.","full_name":"Mutter, Philipp M."},{"full_name":"Tavani, Giulio","first_name":"Giulio","last_name":"Tavani"},{"last_name":"Botifoll","first_name":"Marc","full_name":"Botifoll, Marc"},{"orcid":"0000-0002-2968-611X","id":"1F2B21A2-F6E7-11E9-9B82-F7DBE5697425","last_name":"Crippa","first_name":"Alessandro","full_name":"Crippa, Alessandro"},{"first_name":"Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","full_name":"Kukucka, Josip"},{"id":"71616374-A8E9-11E9-A7CA-09ECE5697425","first_name":"Oliver","last_name":"Sagi","full_name":"Sagi, Oliver"},{"full_name":"Martins, Frederico","first_name":"Frederico","last_name":"Martins","id":"38F80F9A-1CB8-11EA-BC76-B49B3DDC885E","orcid":"0000-0003-2668-2401"},{"first_name":"Jaime","last_name":"Saez Mollejo","id":"e0390f72-f6e0-11ea-865d-862393336714","full_name":"Saez Mollejo, Jaime"},{"id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7370-5357","first_name":"Ivan","last_name":"Prieto Gonzalez","full_name":"Prieto Gonzalez, Ivan"},{"full_name":"Borovkov, Maksim","id":"2ac7a0a2-3562-11eb-9256-fbd18ea55087","last_name":"Borovkov","first_name":"Maksim"},{"full_name":"Arbiol, Jordi","first_name":"Jordi","last_name":"Arbiol"},{"first_name":"Daniel","last_name":"Chrastina","full_name":"Chrastina, Daniel"},{"first_name":"Giovanni","last_name":"Isella","full_name":"Isella, Giovanni"},{"full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios"}],"related_material":{"record":[{"id":"9323","relation":"research_data","status":"public"},{"id":"10058","relation":"dissertation_contains","status":"public"}],"link":[{"relation":"press_release","description":"News on IST Homepage","url":"https://ist.ac.at/en/news/quantum-computing-with-holes/"}]},"publication_status":"published","publisher":"Springer Nature","department":[{"_id":"GeKa"},{"_id":"NanoFab"},{"_id":"GradSch"}],"year":"2021","acknowledgement":"This research was supported by the Scientific Service Units of Institute of Science and Technology (IST) Austria through resources provided by the Miba Machine Shop and the nanofabrication facility, and was made possible with the support of the NOMIS Foundation. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreements no. 844511 and no. 75441, and by the Austrian Science Fund FWF-P 30207 project. A.B. acknowledges support from the European Union Horizon 2020 FET project microSPIRE, no. 766955. M. Botifoll and J.A. acknowledge funding from Generalitat de Catalunya 2017 SGR 327. The Catalan Institute of Nanoscience and Nanotechnology (ICN2) is supported by the Severo Ochoa programme from the Spanish Ministery of Economy (MINECO) (grant no. SEV-2017-0706) and is funded by the Catalonian Research Centre (CERCA) Programme, Generalitat de Catalunya. Part of the present work has been performed within the framework of the Universitat Autónoma de Barcelona Materials Science PhD programme. Part of the HAADF scanning transmission electron microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon, Universidad de Zaragoza. ICN2 acknowledge support from the Spanish Superior Council of Scientific Research (CSIC) Research Platform on Quantum Technologies PTI-001. M.B. acknowledges funding from the Catalan Agency for Management of University and Research Grants (AGAUR) Generalitat de Catalunya formation of investigators (FI) PhD grant.","ec_funded":1,"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"doi":"10.1038/s41563-021-01022-2","quality_controlled":"1","isi":1,"project":[{"call_identifier":"H2020","name":"Majorana bound states in Ge/SiGe heterostructures","_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511"},{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FWF","name":"Hole spin orbit qubits in Ge quantum wells","grant_number":"P30207","_id":"2641CE5E-B435-11E9-9278-68D0E5697425"},{"_id":"262116AA-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"}],"external_id":{"isi":["000657596400001"],"arxiv":["2011.13755"]},"oa":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2011.13755"}],"month":"08","publication_identifier":{"eissn":["1476-4660"],"issn":["1476-1122"]},"oa_version":"Preprint","status":"public","title":"A singlet triplet hole spin qubit in planar Ge","intvolume":" 20","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"8909","abstract":[{"lang":"eng","text":"Spin qubits are considered to be among the most promising candidates for building a quantum processor. Group IV hole spin qubits have moved into the focus of interest due to the ease of operation and compatibility with Si technology. In addition, Ge offers the option for monolithic superconductor-semiconductor integration. Here we demonstrate a hole spin qubit operating at fields below 10 mT, the critical field of Al, by exploiting the large out-of-plane hole g-factors in planar Ge and by encoding the qubit into the singlet-triplet states of a double quantum dot. We observe electrically controlled X and Z-rotations with tunable frequencies exceeding 100 MHz and dephasing times of 1μs which we extend beyond 15μs with echo techniques. These results show that Ge hole singlet triplet qubits outperform their electronic Si and GaAs based counterparts in speed and coherence, respectively. In addition, they are on par with Ge single spin qubits, but can be operated at much lower fields underlining their potential for on chip integration with superconducting technologies."}],"issue":"8","type":"journal_article","date_published":"2021-08-01T00:00:00Z","article_type":"original","page":"1106–1112","publication":"Nature Materials","citation":{"ama":"Jirovec D, Hofmann AC, Ballabio A, et al. A singlet triplet hole spin qubit in planar Ge. Nature Materials. 2021;20(8):1106–1112. doi:10.1038/s41563-021-01022-2","ista":"Jirovec D, Hofmann AC, Ballabio A, Mutter PM, Tavani G, Botifoll M, Crippa A, Kukucka J, Sagi O, Martins F, Saez Mollejo J, Prieto Gonzalez I, Borovkov M, Arbiol J, Chrastina D, Isella G, Katsaros G. 2021. A singlet triplet hole spin qubit in planar Ge. Nature Materials. 20(8), 1106–1112.","apa":"Jirovec, D., Hofmann, A. C., Ballabio, A., Mutter, P. M., Tavani, G., Botifoll, M., … Katsaros, G. (2021). A singlet triplet hole spin qubit in planar Ge. Nature Materials. Springer Nature. https://doi.org/10.1038/s41563-021-01022-2","ieee":"D. Jirovec et al., “A singlet triplet hole spin qubit in planar Ge,” Nature Materials, vol. 20, no. 8. Springer Nature, pp. 1106–1112, 2021.","mla":"Jirovec, Daniel, et al. “A Singlet Triplet Hole Spin Qubit in Planar Ge.” Nature Materials, vol. 20, no. 8, Springer Nature, 2021, pp. 1106–1112, doi:10.1038/s41563-021-01022-2.","short":"D. Jirovec, A.C. Hofmann, A. Ballabio, P.M. Mutter, G. Tavani, M. Botifoll, A. Crippa, J. Kukucka, O. Sagi, F. Martins, J. Saez Mollejo, I. Prieto Gonzalez, M. Borovkov, J. Arbiol, D. Chrastina, G. Isella, G. Katsaros, Nature Materials 20 (2021) 1106–1112.","chicago":"Jirovec, Daniel, Andrea C Hofmann, Andrea Ballabio, Philipp M. Mutter, Giulio Tavani, Marc Botifoll, Alessandro Crippa, et al. “A Singlet Triplet Hole Spin Qubit in Planar Ge.” Nature Materials. Springer Nature, 2021. https://doi.org/10.1038/s41563-021-01022-2."},"day":"01","article_processing_charge":"No","scopus_import":"1"},{"project":[{"name":"Hole spin orbit qubits in Ge quantum wells","call_identifier":"FWF","_id":"2641CE5E-B435-11E9-9278-68D0E5697425","grant_number":"P30207"}],"publication":"arXiv","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2107.12975","open_access":"1"}],"citation":{"ama":"Severin B, Lennon DT, Camenzind LC, et al. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. arXiv. doi:10.48550/arXiv.2107.12975","ista":"Severin B, Lennon DT, Camenzind LC, Vigneau F, Fedele F, Jirovec D, Ballabio A, Chrastina D, Isella G, Kruijf M de, Carballido MJ, Svab S, Kuhlmann AV, Braakman FR, Geyer S, Froning FNM, Moon H, Osborne MA, Sejdinovic D, Katsaros G, Zumbühl DM, Briggs GAD, Ares N. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. arXiv, 2107.12975.","apa":"Severin, B., Lennon, D. T., Camenzind, L. C., Vigneau, F., Fedele, F., Jirovec, D., … Ares, N. (n.d.). Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. arXiv. https://doi.org/10.48550/arXiv.2107.12975","ieee":"B. Severin et al., “Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning,” arXiv. .","mla":"Severin, B., et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” ArXiv, 2107.12975, doi:10.48550/arXiv.2107.12975.","short":"B. Severin, D.T. Lennon, L.C. Camenzind, F. Vigneau, F. Fedele, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, M. de Kruijf, M.J. Carballido, S. Svab, A.V. Kuhlmann, F.R. Braakman, S. Geyer, F.N.M. Froning, H. Moon, M.A. Osborne, D. Sejdinovic, G. Katsaros, D.M. Zumbühl, G.A.D. Briggs, N. Ares, ArXiv (n.d.).","chicago":"Severin, B., D. T. Lennon, L. C. Camenzind, F. Vigneau, F. Fedele, Daniel Jirovec, A. Ballabio, et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2107.12975."},"oa":1,"external_id":{"arxiv":["2107.12975"]},"acknowledged_ssus":[{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"date_published":"2021-07-27T00:00:00Z","doi":"10.48550/arXiv.2107.12975","day":"27","month":"07","article_processing_charge":"No","status":"public","title":"Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning","publication_status":"submitted","department":[{"_id":"GeKa"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"10066","year":"2021","acknowledgement":"We acknowledge Ang Li, Erik P. A. M. Bakkers (University of Eindhoven) for the fabrication of the Ge/Si nanowire. This work was supported by the Royal Society, the EPSRC National Quantum Technology Hub in Networked Quantum Information Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform Grant\r\n(EP/R029229/1), the European Research Council (Grant agreement 948932), the Swiss Nanoscience Institute, the\r\nNCCR SPIN, the EU H2020 European Microkelvin Platform EMP grant No. 824109, the Scientific Service Units\r\nof IST Austria through resources provided by the nanofabrication facility and, the FWF-P30207 project. This publication was also made possible through support from Templeton World Charity Foundation and John Templeton Foundation. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the Templeton Foundations.","date_created":"2021-10-01T12:40:22Z","date_updated":"2024-03-28T23:30:27Z","oa_version":"Preprint","author":[{"full_name":"Severin, B.","first_name":"B.","last_name":"Severin"},{"last_name":"Lennon","first_name":"D. T.","full_name":"Lennon, D. T."},{"first_name":"L. C.","last_name":"Camenzind","full_name":"Camenzind, L. C."},{"last_name":"Vigneau","first_name":"F.","full_name":"Vigneau, F."},{"full_name":"Fedele, F.","last_name":"Fedele","first_name":"F."},{"last_name":"Jirovec","first_name":"Daniel","orcid":"0000-0002-7197-4801","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","full_name":"Jirovec, Daniel"},{"last_name":"Ballabio","first_name":"A.","full_name":"Ballabio, A."},{"full_name":"Chrastina, D.","first_name":"D.","last_name":"Chrastina"},{"full_name":"Isella, G.","first_name":"G.","last_name":"Isella"},{"last_name":"Kruijf","first_name":"M. de","full_name":"Kruijf, M. de"},{"last_name":"Carballido","first_name":"M. J.","full_name":"Carballido, M. J."},{"full_name":"Svab, S.","first_name":"S.","last_name":"Svab"},{"last_name":"Kuhlmann","first_name":"A. V.","full_name":"Kuhlmann, A. V."},{"first_name":"F. R.","last_name":"Braakman","full_name":"Braakman, F. R."},{"full_name":"Geyer, S.","last_name":"Geyer","first_name":"S."},{"full_name":"Froning, F. N. M.","first_name":"F. N. M.","last_name":"Froning"},{"first_name":"H.","last_name":"Moon","full_name":"Moon, H."},{"first_name":"M. A.","last_name":"Osborne","full_name":"Osborne, M. A."},{"full_name":"Sejdinovic, D.","first_name":"D.","last_name":"Sejdinovic"},{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","first_name":"Georgios","last_name":"Katsaros","full_name":"Katsaros, Georgios"},{"full_name":"Zumbühl, D. M.","first_name":"D. M.","last_name":"Zumbühl"},{"first_name":"G. A. D.","last_name":"Briggs","full_name":"Briggs, G. A. D."},{"full_name":"Ares, N.","last_name":"Ares","first_name":"N."}],"related_material":{"record":[{"id":"10058","status":"public","relation":"dissertation_contains"}]},"article_number":"2107.12975","type":"preprint","abstract":[{"text":"The potential of Si and SiGe-based devices for the scaling of quantum circuits is tainted by device variability. Each device needs to be tuned to operation conditions. We give a key step towards tackling this variability with an algorithm that, without modification, is capable of tuning a 4-gate Si FinFET, a 5-gate GeSi nanowire and a 7-gate SiGe heterostructure double quantum dot device from scratch. We achieve tuning times of 30, 10, and 92 minutes, respectively. The algorithm also provides insight into the parameter space landscape for each of these devices. These results show that overarching solutions for the tuning of quantum devices are enabled by machine learning.","lang":"eng"}]},{"day":"02","month":"12","has_accepted_license":"1","article_processing_charge":"No","date_published":"2020-12-02T00:00:00Z","doi":"10.15479/AT:ISTA:8834","oa":1,"tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"citation":{"ama":"Katsaros G. Enhancement of proximity induced superconductivity in planar Germanium. 2020. doi:10.15479/AT:ISTA:8834","ista":"Katsaros G. 2020. Enhancement of proximity induced superconductivity in planar Germanium, Institute of Science and Technology Austria, 10.15479/AT:ISTA:8834.","ieee":"G. Katsaros, “Enhancement of proximity induced superconductivity in planar Germanium.” Institute of Science and Technology Austria, 2020.","apa":"Katsaros, G. (2020). Enhancement of proximity induced superconductivity in planar Germanium. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8834","mla":"Katsaros, Georgios. Enhancement of Proximity Induced Superconductivity in Planar Germanium. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8834.","short":"G. Katsaros, (2020).","chicago":"Katsaros, Georgios. “Enhancement of Proximity Induced Superconductivity in Planar Germanium.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8834."},"abstract":[{"text":"This data collection contains the transport data for figures presented in the supplementary material of \"Enhancement of Proximity Induced Superconductivity in Planar Germanium\" by K. Aggarwal, et. al. \r\nThe measurements were done using Labber Software and the data is stored in the hdf5 file format. 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etc. The monolithic growth of site‐controlled nanowires is a prerequisite toward the next generation of devices that will require addressability and scalability. Here, combining top‐down nanofabrication and bottom‐up self‐assembly, the growth of Ge wires on prepatterned Si (001) substrates with controllable position, distance, length, and structure is reported. This is achieved by a novel growth process that uses a SiGe strain‐relaxation template and can be potentially generalized to other material combinations. Transport measurements show an electrically tunable spin–orbit coupling, with a spin–orbit length similar to that of III–V materials. Also, charge sensing between quantum dots in closely spaced wires is observed, which underlines their potential for the realization of advanced quantum devices. The reported results open a path toward scalable qubit devices using nanowires on silicon.","lang":"eng"}],"citation":{"ama":"Gao F, Wang J-H, Watzinger H, et al. Site-controlled uniform Ge/Si hut wires with electrically tunable spin-orbit coupling. Advanced Materials. 2020;32(16). doi:10.1002/adma.201906523","ista":"Gao F, Wang J-H, Watzinger H, Hu H, Rančić MJ, Zhang J-Y, Wang T, Yao Y, Wang G-L, Kukucka J, Vukušić L, Kloeffel C, Loss D, Liu F, Katsaros G, Zhang J-J. 2020. Site-controlled uniform Ge/Si hut wires with electrically tunable spin-orbit coupling. Advanced Materials. 32(16), 1906523.","apa":"Gao, F., Wang, J.-H., Watzinger, H., Hu, H., Rančić, M. J., Zhang, J.-Y., … Zhang, J.-J. (2020). Site-controlled uniform Ge/Si hut wires with electrically tunable spin-orbit coupling. Advanced Materials. Wiley. https://doi.org/10.1002/adma.201906523","ieee":"F. Gao et al., “Site-controlled uniform Ge/Si hut wires with electrically tunable spin-orbit coupling,” Advanced Materials, vol. 32, no. 16. Wiley, 2020.","mla":"Gao, Fei, et al. “Site-Controlled Uniform Ge/Si Hut Wires with Electrically Tunable Spin-Orbit Coupling.” Advanced Materials, vol. 32, no. 16, 1906523, Wiley, 2020, doi:10.1002/adma.201906523.","short":"F. Gao, J.-H. Wang, H. Watzinger, H. Hu, M.J. Rančić, J.-Y. Zhang, T. Wang, Y. Yao, G.-L. Wang, J. Kukucka, L. Vukušić, C. Kloeffel, D. Loss, F. Liu, G. Katsaros, J.-J. Zhang, Advanced Materials 32 (2020).","chicago":"Gao, Fei, Jian-Huan Wang, Hannes Watzinger, Hao Hu, Marko J. Rančić, Jie-Yin Zhang, Ting Wang, et al. “Site-Controlled Uniform Ge/Si Hut Wires with Electrically Tunable Spin-Orbit Coupling.” Advanced Materials. Wiley, 2020. https://doi.org/10.1002/adma.201906523."},"publication":"Advanced Materials","article_type":"original","date_published":"2020-04-23T00:00:00Z","scopus_import":"1","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","day":"23","acknowledgement":"This work was supported by the National Key R&D Program of China (Grant Nos. 2016YFA0301701 and 2016YFA0300600), the NSFC (Grant Nos. 11574356, 11434010, and 11404252), the Strategic Priority Research Program of CAS (Grant No. XDB30000000), the ERC Starting Grant No. 335497, the FWF P32235 project, and the European Union's Horizon 2020 research and innovation program under Grant Agreement #862046. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility. F.L. thanks support from DOE (Grant No. DE‐FG02‐04ER46148). H.H. thanks the Startup Funding from Xi'an Jiaotong University.","year":"2020","publisher":"Wiley","department":[{"_id":"GeKa"}],"publication_status":"published","related_material":{"record":[{"id":"7996","status":"public","relation":"dissertation_contains"},{"relation":"research_data","status":"public","id":"9222"}]},"author":[{"last_name":"Gao","first_name":"Fei","full_name":"Gao, Fei"},{"last_name":"Wang","first_name":"Jian-Huan","full_name":"Wang, Jian-Huan"},{"full_name":"Watzinger, Hannes","id":"35DF8E50-F248-11E8-B48F-1D18A9856A87","first_name":"Hannes","last_name":"Watzinger"},{"full_name":"Hu, Hao","first_name":"Hao","last_name":"Hu"},{"full_name":"Rančić, Marko J.","last_name":"Rančić","first_name":"Marko J."},{"last_name":"Zhang","first_name":"Jie-Yin","full_name":"Zhang, Jie-Yin"},{"first_name":"Ting","last_name":"Wang","full_name":"Wang, Ting"},{"full_name":"Yao, Yuan","first_name":"Yuan","last_name":"Yao"},{"full_name":"Wang, Gui-Lei","first_name":"Gui-Lei","last_name":"Wang"},{"full_name":"Kukucka, Josip","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","first_name":"Josip","last_name":"Kukucka"},{"orcid":"0000-0003-2424-8636","id":"31E9F056-F248-11E8-B48F-1D18A9856A87","last_name":"Vukušić","first_name":"Lada","full_name":"Vukušić, Lada"},{"full_name":"Kloeffel, Christoph","last_name":"Kloeffel","first_name":"Christoph"},{"first_name":"Daniel","last_name":"Loss","full_name":"Loss, Daniel"},{"last_name":"Liu","first_name":"Feng","full_name":"Liu, Feng"},{"full_name":"Katsaros, Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","first_name":"Georgios","last_name":"Katsaros"},{"full_name":"Zhang, Jian-Jun","first_name":"Jian-Jun","last_name":"Zhang"}],"volume":32,"date_created":"2020-02-28T09:47:00Z","date_updated":"2024-02-21T12:42:12Z","article_number":"1906523","ec_funded":1,"file_date_updated":"2020-11-20T10:11:35Z","external_id":{"isi":["000516660900001"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"project":[{"call_identifier":"FP7","name":"Towards Spin qubits and Majorana fermions in Germanium selfassembled hut-wires","_id":"25517E86-B435-11E9-9278-68D0E5697425","grant_number":"335497"},{"grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E","name":"Towards scalable hut wire quantum devices","call_identifier":"FWF"},{"name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","call_identifier":"H2020","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","grant_number":"862046"}],"isi":1,"quality_controlled":"1","doi":"10.1002/adma.201906523","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"publication_identifier":{"issn":["0935-9648"]},"month":"04"},{"date_created":"2021-03-05T18:00:47Z","date_updated":"2024-02-21T12:42:13Z","file":[{"file_id":"9223","relation":"main_file","date_updated":"2021-03-05T17:50:45Z","date_created":"2021-03-05T17:50:45Z","checksum":"41b66e195ed3dbd73077feee77b05652","file_name":"DOI_SiteControlledHWs.zip","access_level":"open_access","creator":"gkatsaro","file_size":13317557,"content_type":"application/x-zip-compressed"},{"file_id":"9233","relation":"main_file","date_updated":"2021-03-10T07:31:50Z","date_created":"2021-03-10T07:31:50Z","success":1,"checksum":"a1dc5f710ba4b3bb7f248195ba754ab2","file_name":"Readme.txt","access_level":"open_access","creator":"dernst","file_size":3515,"content_type":"text/plain"}],"oa_version":"Published Version","author":[{"full_name":"Katsaros, Georgios","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","first_name":"Georgios","last_name":"Katsaros"}],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"7541"}]},"contributor":[{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios","last_name":"Katsaros","contributor_type":"research_group"}],"status":"public","ddc":["530"],"title":"Transport data for: Site‐controlled uniform Ge/Si Hut wires with electrically tunable spin–orbit coupling","publisher":"Institute of Science and Technology Austria","department":[{"_id":"GeKa"}],"year":"2020","_id":"9222","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file_date_updated":"2021-03-10T07:31:50Z","type":"research_data","date_published":"2020-03-16T00:00:00Z","doi":"10.15479/AT:ISTA:9222","oa":1,"tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"citation":{"ama":"Katsaros G. Transport data for: Site‐controlled uniform Ge/Si Hut wires with electrically tunable spin–orbit coupling. 2020. doi:10.15479/AT:ISTA:9222","ista":"Katsaros G. 2020. Transport data for: Site‐controlled uniform Ge/Si Hut wires with electrically tunable spin–orbit coupling, Institute of Science and Technology Austria, 10.15479/AT:ISTA:9222.","apa":"Katsaros, G. (2020). Transport data for: Site‐controlled uniform Ge/Si Hut wires with electrically tunable spin–orbit coupling. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:9222","ieee":"G. Katsaros, “Transport data for: Site‐controlled uniform Ge/Si Hut wires with electrically tunable spin–orbit coupling.” Institute of Science and Technology Austria, 2020.","mla":"Katsaros, Georgios. Transport Data for: Site‐controlled Uniform Ge/Si Hut Wires with Electrically Tunable Spin–Orbit Coupling. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:9222.","short":"G. Katsaros, (2020).","chicago":"Katsaros, Georgios. “Transport Data for: Site‐controlled Uniform Ge/Si Hut Wires with Electrically Tunable Spin–Orbit Coupling.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:9222."},"month":"03","day":"16","article_processing_charge":"No","has_accepted_license":"1"},{"month":"06","publication_identifier":{"issn":["1530-6984"],"eissn":["1530-6992"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"isi":["000548893200066"],"pmid":["32479090"]},"isi":1,"quality_controlled":"1","project":[{"grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E","name":"Towards scalable hut wire quantum devices","call_identifier":"FWF"},{"name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","call_identifier":"H2020","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","grant_number":"862046"}],"doi":"10.1021/acs.nanolett.0c01466","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"file_date_updated":"2020-08-06T09:35:37Z","ec_funded":1,"year":"2020","acknowledgement":"We acknowledge G. Burkard, V. N. Golovach, C. Kloeffel, D.Loss, P. Rabl, and M. Rancič ́ for helpful discussions. We\r\nfurther acknowledge T. Adletzberger, J. Aguilera, T. Asenov, S. Bagiante, T. Menner, L. Shafeek, P. Taus, P. Traunmüller, and D. Waldhausl for their invaluable assistance. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, by the FWF-P 32235 project, by the National Key R&D Program of China (2016YFA0301701, 2016YFA0300600), and by the European Union’s Horizon 2020 research and innovation program under grant agreement no. 862046. All data of this publication are available at 10.15479/AT:ISTA:7689.","pmid":1,"publication_status":"published","publisher":"American Chemical Society","department":[{"_id":"GeKa"}],"author":[{"last_name":"Katsaros","first_name":"Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","full_name":"Katsaros, Georgios"},{"full_name":"Kukucka, Josip","first_name":"Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Vukušić, Lada","first_name":"Lada","last_name":"Vukušić","id":"31E9F056-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2424-8636"},{"full_name":"Watzinger, Hannes","first_name":"Hannes","last_name":"Watzinger","id":"35DF8E50-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Fei","last_name":"Gao","full_name":"Gao, Fei"},{"last_name":"Wang","first_name":"Ting","orcid":"0000-0002-4619-9575","full_name":"Wang, Ting"},{"full_name":"Zhang, Jian-Jun","last_name":"Zhang","first_name":"Jian-Jun"},{"last_name":"Held","first_name":"Karsten","full_name":"Held, Karsten"}],"related_material":{"record":[{"relation":"research_data","status":"public","id":"7689"}]},"date_updated":"2024-02-21T12:44:01Z","date_created":"2020-08-06T09:25:04Z","volume":20,"scopus_import":"1","day":"01","has_accepted_license":"1","article_processing_charge":"Yes (via OA deal)","publication":"Nano Letters","citation":{"ieee":"G. Katsaros et al., “Zero field splitting of heavy-hole states in quantum dots,” Nano Letters, vol. 20, no. 7. American Chemical Society, pp. 5201–5206, 2020.","apa":"Katsaros, G., Kukucka, J., Vukušić, L., Watzinger, H., Gao, F., Wang, T., … Held, K. (2020). Zero field splitting of heavy-hole states in quantum dots. Nano Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.0c01466","ista":"Katsaros G, Kukucka J, Vukušić L, Watzinger H, Gao F, Wang T, Zhang J-J, Held K. 2020. Zero field splitting of heavy-hole states in quantum dots. Nano Letters. 20(7), 5201–5206.","ama":"Katsaros G, Kukucka J, Vukušić L, et al. Zero field splitting of heavy-hole states in quantum dots. Nano Letters. 2020;20(7):5201-5206. doi:10.1021/acs.nanolett.0c01466","chicago":"Katsaros, Georgios, Josip Kukucka, Lada Vukušić, Hannes Watzinger, Fei Gao, Ting Wang, Jian-Jun Zhang, and Karsten Held. “Zero Field Splitting of Heavy-Hole States in Quantum Dots.” Nano Letters. American Chemical Society, 2020. https://doi.org/10.1021/acs.nanolett.0c01466.","short":"G. Katsaros, J. Kukucka, L. Vukušić, H. Watzinger, F. Gao, T. Wang, J.-J. Zhang, K. Held, Nano Letters 20 (2020) 5201–5206.","mla":"Katsaros, Georgios, et al. “Zero Field Splitting of Heavy-Hole States in Quantum Dots.” Nano Letters, vol. 20, no. 7, American Chemical Society, 2020, pp. 5201–06, doi:10.1021/acs.nanolett.0c01466."},"article_type":"original","page":"5201-5206","date_published":"2020-06-01T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Using inelastic cotunneling spectroscopy we observe a zero field splitting within the spin triplet manifold of Ge hut wire quantum dots. The states with spin ±1 in the confinement direction are energetically favored by up to 55 μeV compared to the spin 0 triplet state because of the strong spin–orbit coupling. The reported effect should be observable in a broad class of strongly confined hole quantum-dot systems and might need to be considered when operating hole spin qubits."}],"issue":"7","_id":"8203","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","ddc":["530"],"title":"Zero field splitting of heavy-hole states in quantum dots","status":"public","intvolume":" 20","oa_version":"Published Version","file":[{"file_id":"8204","relation":"main_file","date_created":"2020-08-06T09:35:37Z","date_updated":"2020-08-06T09:35:37Z","success":1,"file_name":"2020_NanoLetters_Katsaros.pdf","access_level":"open_access","creator":"dernst","file_size":3308906,"content_type":"application/pdf"}]},{"type":"research_data","abstract":[{"lang":"eng","text":"These are the supplementary research data to the publication \"Zero field splitting of heavy-hole states in quantum dots\". All matrix files have the same format. Within each column the bias voltage is changed. Each column corresponds to either a different gate voltage or magnetic field. The voltage values are given in mV, the current values in pA. Find a specific description in the included Readme file.\r\n"}],"file_date_updated":"2020-07-14T12:48:02Z","ec_funded":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"7689","year":"2020","title":"Supplementary data for \"Zero field splitting of heavy-hole states in quantum dots\"","status":"public","ddc":["530"],"department":[{"_id":"GeKa"}],"publisher":"Institute of Science and Technology Austria","author":[{"full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios"}],"related_material":{"record":[{"id":"8203","relation":"used_in_publication","status":"public"}]},"contributor":[{"id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","contributor_type":"contact_person","first_name":"Georgios"}],"date_created":"2020-05-01T15:14:46Z","date_updated":"2024-02-21T12:44:02Z","file":[{"creator":"gkatsaro","file_size":5514403,"content_type":"application/x-zip-compressed","access_level":"open_access","file_name":"DOI_ZeroFieldSplitting.zip","checksum":"d23c0cb9e2d19e14e2f902b88b97c05d","date_updated":"2020-07-14T12:48:02Z","date_created":"2020-05-01T15:13:28Z","file_id":"7786","relation":"main_file"}],"oa_version":"Published Version","month":"05","day":"01","has_accepted_license":"1","article_processing_charge":"No","tmp":{"short":"CC0 (1.0)","image":"/images/cc_0.png","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"oa":1,"citation":{"ama":"Katsaros G. Supplementary data for “Zero field splitting of heavy-hole states in quantum dots.” 2020. doi:10.15479/AT:ISTA:7689","ista":"Katsaros G. 2020. Supplementary data for ‘Zero field splitting of heavy-hole states in quantum dots’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:7689.","ieee":"G. Katsaros, “Supplementary data for ‘Zero field splitting of heavy-hole states in quantum dots.’” Institute of Science and Technology Austria, 2020.","apa":"Katsaros, G. (2020). Supplementary data for “Zero field splitting of heavy-hole states in quantum dots.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:7689","mla":"Katsaros, Georgios. Supplementary Data for “Zero Field Splitting of Heavy-Hole States in Quantum Dots.” Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:7689.","short":"G. Katsaros, (2020).","chicago":"Katsaros, Georgios. “Supplementary Data for ‘Zero Field Splitting of Heavy-Hole States in Quantum Dots.’” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:7689."},"project":[{"call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","grant_number":"862046","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E"},{"grant_number":"P32235","_id":"237B3DA4-32DE-11EA-91FC-C7463DDC885E","call_identifier":"FWF","name":"Towards scalable hut wire quantum devices"}],"doi":"10.15479/AT:ISTA:7689","date_published":"2020-05-01T00:00:00Z"},{"month":"12","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"project":[{"_id":"262116AA-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"},{"call_identifier":"H2020","name":"Majorana bound states in Ge/SiGe heterostructures","grant_number":"844511","_id":"26A151DA-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","name":"TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS","_id":"237E5020-32DE-11EA-91FC-C7463DDC885E","grant_number":"862046"}],"external_id":{"arxiv":["2012.00322"]},"oa":1,"file_date_updated":"2020-12-02T10:42:31Z","ec_funded":1,"article_number":"2012.00322","date_updated":"2024-03-28T23:30:27Z","date_created":"2020-12-02T10:42:53Z","author":[{"orcid":"0000-0001-9985-9293","id":"b22ab905-3539-11eb-84c3-fc159dcd79cb","last_name":"Aggarwal","first_name":"Kushagra","full_name":"Aggarwal, Kushagra"},{"full_name":"Hofmann, Andrea C","first_name":"Andrea C","last_name":"Hofmann","id":"340F461A-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Jirovec, Daniel","first_name":"Daniel","last_name":"Jirovec","id":"4C473F58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7197-4801"},{"full_name":"Prieto Gonzalez, Ivan","orcid":"0000-0002-7370-5357","id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","last_name":"Prieto Gonzalez","first_name":"Ivan"},{"full_name":"Sammak, Amir","first_name":"Amir","last_name":"Sammak"},{"full_name":"Botifoll, Marc","first_name":"Marc","last_name":"Botifoll"},{"last_name":"Marti-Sanchez","first_name":"Sara","full_name":"Marti-Sanchez, Sara"},{"first_name":"Menno","last_name":"Veldhorst","full_name":"Veldhorst, Menno"},{"last_name":"Arbiol","first_name":"Jordi","full_name":"Arbiol, Jordi"},{"last_name":"Scappucci","first_name":"Giordano","full_name":"Scappucci, Giordano"},{"first_name":"Georgios","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8342-202X","full_name":"Katsaros, Georgios"}],"related_material":{"record":[{"id":"10559","relation":"later_version","status":"public"},{"relation":"research_data","status":"public","id":"8834"},{"id":"10058","relation":"dissertation_contains","status":"public"}]},"publication_status":"submitted","department":[{"_id":"GeKa"}],"year":"2020","acknowledgement":"This research and related results were made possible with the support of the NOMIS Foundation. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement #844511 and the Grant Agreement #862046. ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported by the Severo Ochoa\r\nprogram from Spanish MINECO (Grant No. SEV2017-0706) and is funded by the CERCA Programme / Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Aut`onoma de Barcelona Materials Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia de Aragon-Universidad de Zaragoza. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. We acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001. This project has received funding from\r\nthe European Union’s Horizon 2020 research and innovation programme under grant agreement No 823717 – ESTEEM3. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. GS and MV acknowledge support through a projectruimte grant associated with the Netherlands Organization of Scientific Research (NWO).","day":"02","has_accepted_license":"1","article_processing_charge":"No","date_published":"2020-12-02T00:00:00Z","publication":"arXiv","citation":{"apa":"Aggarwal, K., Hofmann, A. C., Jirovec, D., Prieto Gonzalez, I., Sammak, A., Botifoll, M., … Katsaros, G. (n.d.). Enhancement of proximity induced superconductivity in planar Germanium. arXiv.","ieee":"K. Aggarwal et al., “Enhancement of proximity induced superconductivity in planar Germanium,” arXiv. .","ista":"Aggarwal K, Hofmann AC, Jirovec D, Prieto Gonzalez I, Sammak A, Botifoll M, Marti-Sanchez S, Veldhorst M, Arbiol J, Scappucci G, Katsaros G. Enhancement of proximity induced superconductivity in planar Germanium. arXiv, 2012.00322.","ama":"Aggarwal K, Hofmann AC, Jirovec D, et al. Enhancement of proximity induced superconductivity in planar Germanium. arXiv.","chicago":"Aggarwal, Kushagra, Andrea C Hofmann, Daniel Jirovec, Ivan Prieto Gonzalez, Amir Sammak, Marc Botifoll, Sara Marti-Sanchez, et al. “Enhancement of Proximity Induced Superconductivity in Planar Germanium.” ArXiv, n.d.","short":"K. Aggarwal, A.C. Hofmann, D. Jirovec, I. Prieto Gonzalez, A. Sammak, M. Botifoll, S. Marti-Sanchez, M. Veldhorst, J. Arbiol, G. Scappucci, G. Katsaros, ArXiv (n.d.).","mla":"Aggarwal, Kushagra, et al. “Enhancement of Proximity Induced Superconductivity in Planar Germanium.” ArXiv, 2012.00322."},"abstract":[{"text":"Holes in planar Ge have high mobilities, strong spin-orbit interaction and electrically tunable g-factors, and are therefore emerging as a promising candidate for hybrid superconductorsemiconductor devices. This is further motivated by the observation of supercurrent transport in planar Ge Josephson Field effect transistors (JoFETs). A key challenge towards hybrid germanium quantum technology is the design of high quality interfaces and superconducting contacts that are robust against magnetic fields. By combining the assets of Al, which has a long superconducting coherence, and Nb, which has a significant superconducting gap, we form low-disordered JoFETs with large ICRN products that are capable of withstanding high magnetic fields. We furthermore demonstrate the ability of phase-biasing individual JoFETs opening up an avenue to explore topological superconductivity in planar Ge. The persistence of superconductivity in the reported hybrid devices beyond 1.8 T paves the way towards integrating spin qubits and proximity-induced superconductivity on the same chip.","lang":"eng"}],"type":"preprint","file":[{"content_type":"application/pdf","file_size":1697939,"creator":"gkatsaro","access_level":"open_access","file_name":"Superconducting_2D_Ge.pdf","checksum":"22a612e206232fa94b138b2c2f957582","date_updated":"2020-12-02T10:42:31Z","date_created":"2020-12-02T10:42:31Z","relation":"main_file","file_id":"8832"}],"oa_version":"Submitted Version","title":"Enhancement of proximity induced superconductivity in planar Germanium","status":"public","ddc":["530"],"_id":"8831","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"abstract":[{"lang":"eng","text":"We study double quantum dots in a Ge/SiGe heterostructure and test their maturity towards singlet-triplet ($S-T_0$) qubits. We demonstrate a large range of tunability, from two single quantum dots to a double quantum dot. We measure Pauli spin blockade and study the anisotropy of the $g$-factor. We use an adjacent quantum dot for sensing charge transitions in the double quantum dot at interest. In conclusion, Ge/SiGe possesses all ingredients necessary for building a singlet-triplet qubit."}],"ec_funded":1,"article_number":"1910.05841","type":"preprint","author":[{"full_name":"Hofmann, Andrea C","id":"340F461A-F248-11E8-B48F-1D18A9856A87","last_name":"Hofmann","first_name":"Andrea C"},{"full_name":"Jirovec, Daniel","last_name":"Jirovec","first_name":"Daniel","orcid":"0000-0002-7197-4801","id":"4C473F58-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Borovkov, Maxim","first_name":"Maxim","last_name":"Borovkov"},{"full_name":"Prieto Gonzalez, Ivan","orcid":"0000-0002-7370-5357","id":"2A307FE2-F248-11E8-B48F-1D18A9856A87","last_name":"Prieto Gonzalez","first_name":"Ivan"},{"full_name":"Ballabio, Andrea","last_name":"Ballabio","first_name":"Andrea"},{"full_name":"Frigerio, Jacopo","last_name":"Frigerio","first_name":"Jacopo"},{"first_name":"Daniel","last_name":"Chrastina","full_name":"Chrastina, Daniel"},{"first_name":"Giovanni","last_name":"Isella","full_name":"Isella, Giovanni"},{"full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","last_name":"Katsaros","first_name":"Georgios"}],"related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"10058"}]},"date_updated":"2024-03-28T23:30:27Z","date_created":"2021-10-01T12:14:51Z","oa_version":"Preprint","_id":"10065","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","acknowledgement":"We thank Matthias Brauns for helpful discussions and careful proofreading of the manuscript. This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No 844511 and from the FWF project P30207. The research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA machine shop and the nanofabrication\r\nfacility.","year":"2019","status":"public","title":"Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits","publication_status":"submitted","department":[{"_id":"GeKa"}],"month":"10","day":"13","article_processing_charge":"No","doi":"10.48550/arXiv.1910.05841","date_published":"2019-10-13T00:00:00Z","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"publication":"arXiv","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1910.05841"}],"citation":{"ama":"Hofmann AC, Jirovec D, Borovkov M, et al. Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits. arXiv. doi:10.48550/arXiv.1910.05841","ista":"Hofmann AC, Jirovec D, Borovkov M, Prieto Gonzalez I, Ballabio A, Frigerio J, Chrastina D, Isella G, Katsaros G. Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits. arXiv, 1910.05841.","ieee":"A. C. Hofmann et al., “Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits,” arXiv. .","apa":"Hofmann, A. C., Jirovec, D., Borovkov, M., Prieto Gonzalez, I., Ballabio, A., Frigerio, J., … Katsaros, G. (n.d.). Assessing the potential of Ge/SiGe quantum dots as hosts for singlet-triplet qubits. arXiv. https://doi.org/10.48550/arXiv.1910.05841","mla":"Hofmann, Andrea C., et al. “Assessing the Potential of Ge/SiGe Quantum Dots as Hosts for Singlet-Triplet Qubits.” ArXiv, 1910.05841, doi:10.48550/arXiv.1910.05841.","short":"A.C. Hofmann, D. Jirovec, M. Borovkov, I. Prieto Gonzalez, A. Ballabio, J. Frigerio, D. Chrastina, G. Isella, G. Katsaros, ArXiv (n.d.).","chicago":"Hofmann, Andrea C, Daniel Jirovec, Maxim Borovkov, Ivan Prieto Gonzalez, Andrea Ballabio, Jacopo Frigerio, Daniel Chrastina, Giovanni Isella, and Georgios Katsaros. “Assessing the Potential of Ge/SiGe Quantum Dots as Hosts for Singlet-Triplet Qubits.” ArXiv, n.d. https://doi.org/10.48550/arXiv.1910.05841."},"oa":1,"external_id":{"arxiv":["1910.05841"]},"project":[{"_id":"26A151DA-B435-11E9-9278-68D0E5697425","grant_number":"844511","name":"Majorana bound states in Ge/SiGe heterostructures","call_identifier":"H2020"},{"_id":"2641CE5E-B435-11E9-9278-68D0E5697425","grant_number":"P30207","call_identifier":"FWF","name":"Hole spin orbit qubits in Ge quantum wells"}]},{"day":"25","has_accepted_license":"1","article_processing_charge":"Yes","scopus_import":"1","date_published":"2018-09-25T00:00:00Z","article_type":"original","publication":"Nature Communications","citation":{"ama":"Watzinger H, Kukucka J, Vukušić L, et al. A germanium hole spin qubit. Nature Communications. 2018;9(3902). doi:10.1038/s41467-018-06418-4","ista":"Watzinger H, Kukucka J, Vukušić L, Gao F, Wang T, Schäffler F, Zhang J, Katsaros G. 2018. A germanium hole spin qubit. Nature Communications. 9(3902).","apa":"Watzinger, H., Kukucka, J., Vukušić, L., Gao, F., Wang, T., Schäffler, F., … Katsaros, G. (2018). A germanium hole spin qubit. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/s41467-018-06418-4","ieee":"H. Watzinger et al., “A germanium hole spin qubit,” Nature Communications, vol. 9, no. 3902. Nature Publishing Group, 2018.","mla":"Watzinger, Hannes, et al. “A Germanium Hole Spin Qubit.” Nature Communications, vol. 9, no. 3902, Nature Publishing Group, 2018, doi:10.1038/s41467-018-06418-4.","short":"H. Watzinger, J. Kukucka, L. Vukušić, F. Gao, T. Wang, F. Schäffler, J. Zhang, G. Katsaros, Nature Communications 9 (2018).","chicago":"Watzinger, Hannes, Josip Kukucka, Lada Vukušić, Fei Gao, Ting Wang, Friedrich Schäffler, Jian Zhang, and Georgios Katsaros. “A Germanium Hole Spin Qubit.” Nature Communications. Nature Publishing Group, 2018. https://doi.org/10.1038/s41467-018-06418-4."},"abstract":[{"lang":"eng","text":"Holes confined in quantum dots have gained considerable interest in the past few years due to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in natural Ge. The qubit is formed in a hut wire double quantum dot device. The Pauli spin blockade principle allowed us to demonstrate electric dipole spin resonance by applying a radio frequency electric field to one of the electrodes defining the double quantum dot. Coherent hole spin oscillations with Rabi frequencies reaching 140 MHz are demonstrated and dephasing times of 130 ns are measured. The reported results emphasize the potential of Ge as a platform for fast and electrically tunable hole spin qubit devices."}],"issue":"3902 ","type":"journal_article","oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"2018_NatureComm_Watzinger.pdf","creator":"dernst","file_size":1063469,"content_type":"application/pdf","file_id":"5687","relation":"main_file","checksum":"e7148c10a64497e279c4de570b6cc544","date_updated":"2020-07-14T12:48:02Z","date_created":"2018-12-17T10:28:30Z"}],"ddc":["530"],"title":"A germanium hole spin qubit","status":"public","intvolume":" 9","_id":"77","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","month":"09","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"language":[{"iso":"eng"}],"doi":"10.1038/s41467-018-06418-4","isi":1,"quality_controlled":"1","project":[{"call_identifier":"FP7","name":"Towards Spin qubits and Majorana fermions in Germanium selfassembled hut-wires","grant_number":"335497","_id":"25517E86-B435-11E9-9278-68D0E5697425"},{"_id":"2552F888-B435-11E9-9278-68D0E5697425","grant_number":"Y00715","name":"Loch Spin-Qubits und Majorana-Fermionen in Germanium","call_identifier":"FWF"}],"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000445560800010"]},"file_date_updated":"2020-07-14T12:48:02Z","ec_funded":1,"date_created":"2018-12-11T11:44:30Z","date_updated":"2023-09-08T11:44:02Z","volume":9,"author":[{"full_name":"Watzinger, Hannes","first_name":"Hannes","last_name":"Watzinger","id":"35DF8E50-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","full_name":"Kukucka, Josip"},{"first_name":"Lada","last_name":"Vukusic","id":"31E9F056-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2424-8636","full_name":"Vukusic, Lada"},{"full_name":"Gao, Fei","first_name":"Fei","last_name":"Gao"},{"full_name":"Wang, Ting","last_name":"Wang","first_name":"Ting"},{"full_name":"Schäffler, Friedrich","first_name":"Friedrich","last_name":"Schäffler"},{"last_name":"Zhang","first_name":"Jian","full_name":"Zhang, Jian"},{"full_name":"Katsaros, Georgios","last_name":"Katsaros","first_name":"Georgios","orcid":"0000-0001-8342-202X","id":"38DB5788-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"record":[{"relation":"popular_science","id":"7977"},{"id":"7996","status":"public","relation":"dissertation_contains"}]},"publication_status":"published","department":[{"_id":"GeKa"}],"publisher":"Nature Publishing Group","year":"2018"}]