[{"abstract":[{"lang":"eng","text":"We investigate the deterministic generation and distribution of entanglement in large quantum networks by driving distant qubits with the output fields of a nondegenerate parametric amplifier. In this setting, the amplifier produces a continuous Gaussian two-mode squeezed state, which acts as a quantum-correlated reservoir for the qubits and relaxes them into a highly entangled steady state. Here we are interested in the maximal amount of entanglement and the optimal entanglement generation rates that can be achieved with this scheme under realistic conditions taking, in particular, the finite amplifier bandwidth, waveguide losses, and propagation delays into account. By combining exact numerical simulations of the full network with approximate analytic results, we predict the optimal working point for the amplifier and the corresponding qubit-qubit entanglement under various conditions. Our findings show that this passive conversion of Gaussian into discrete-variable entanglement offers a robust and experimentally very attractive approach for operating large optical, microwave, or hybrid quantum networks, for which efficient parametric amplifiers are currently developed."}],"issue":"6","type":"journal_article","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"11591","status":"public","title":"Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams","intvolume":" 105","day":"29","article_processing_charge":"No","scopus_import":"1","date_published":"2022-06-29T00:00:00Z","publication":"Physical Review A","citation":{"mla":"Agustí, J., et al. “Long-Distance Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.” Physical Review A, vol. 105, no. 6, 062454, American Physical Society, 2022, doi:10.1103/PhysRevA.105.062454.","short":"J. Agustí, Y. Minoguchi, J.M. Fink, P. Rabl, Physical Review A 105 (2022).","chicago":"Agustí, J., Y. Minoguchi, Johannes M Fink, and P. Rabl. “Long-Distance Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.” Physical Review A. American Physical Society, 2022. https://doi.org/10.1103/PhysRevA.105.062454.","ama":"Agustí J, Minoguchi Y, Fink JM, Rabl P. Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. Physical Review A. 2022;105(6). doi:10.1103/PhysRevA.105.062454","ista":"Agustí J, Minoguchi Y, Fink JM, Rabl P. 2022. Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. Physical Review A. 105(6), 062454.","apa":"Agustí, J., Minoguchi, Y., Fink, J. M., & Rabl, P. (2022). Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.105.062454","ieee":"J. Agustí, Y. Minoguchi, J. M. Fink, and P. Rabl, “Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams,” Physical Review A, vol. 105, no. 6. American Physical Society, 2022."},"article_type":"original","ec_funded":1,"article_number":"062454","author":[{"full_name":"Agustí, J.","last_name":"Agustí","first_name":"J."},{"first_name":"Y.","last_name":"Minoguchi","full_name":"Minoguchi, Y."},{"full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","last_name":"Fink"},{"last_name":"Rabl","first_name":"P.","full_name":"Rabl, P."}],"date_updated":"2023-08-03T11:58:16Z","date_created":"2022-07-17T22:01:55Z","volume":105,"year":"2022","acknowledgement":"We thank T. Mavrogordatos and D. Zhu for initial contribution on the presented topic and K. Fedorov for stimulating discussions on entangled microwave beams. This work was supported by the Austrian Science Fund (FWF) through Grant No. P32299 (PHONED) and the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 899354 (SuperQuLAN). Most of the computational results presented were obtained using the CLIP cluster [65].","publication_status":"published","department":[{"_id":"JoFi"}],"publisher":"American Physical Society","month":"06","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"doi":"10.1103/PhysRevA.105.062454","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2204.02993"}],"external_id":{"arxiv":["2204.02993"],"isi":["000824330200003"]},"oa":1,"isi":1,"quality_controlled":"1","project":[{"grant_number":"899354","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","name":"Quantum Local Area Networks with Superconducting Qubits","call_identifier":"H2020"}]},{"day":"28","month":"06","article_processing_charge":"No","has_accepted_license":"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":{"short":"M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh, J.M. Fink, (2022).","mla":"Zemlicka, Martin, et al. Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses. Zenodo, 2022, doi:10.5281/ZENODO.8408897.","chicago":"Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” Zenodo, 2022. https://doi.org/10.5281/ZENODO.8408897.","ama":"Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. 2022. doi:10.5281/ZENODO.8408897","ieee":"M. Zemlicka et al., “Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses.” Zenodo, 2022.","apa":"Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh, S., & Fink, J. M. (2022). Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. Zenodo. https://doi.org/10.5281/ZENODO.8408897","ista":"Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink JM. 2022. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses, Zenodo, 10.5281/ZENODO.8408897."},"oa":1,"main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/ZENODO.8408897"}],"doi":"10.5281/ZENODO.8408897","date_published":"2022-06-28T00:00:00Z","type":"research_data_reference","abstract":[{"lang":"eng","text":"This dataset comprises all data shown in the figures of the submitted article \"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses\" at arxiv.org/abs/2206.14104. Additional raw data are available from the corresponding author on reasonable request."}],"license":"https://creativecommons.org/publicdomain/zero/1.0/","_id":"14520","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2022","status":"public","title":"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses","ddc":["530"],"department":[{"_id":"JoFi"}],"publisher":"Zenodo","author":[{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","last_name":"Zemlicka","full_name":"Zemlicka, Martin"},{"id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena","last_name":"Redchenko","full_name":"Redchenko, Elena"},{"full_name":"Peruzzo, Matilda","first_name":"Matilda","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628"},{"full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani","first_name":"Farid"},{"last_name":"Trioni","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","full_name":"Trioni, Andrea"},{"full_name":"Barzanjeh, Shabir","orcid":"0000-0003-0415-1423","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","last_name":"Barzanjeh","first_name":"Shabir"},{"full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","last_name":"Fink"}],"related_material":{"record":[{"id":"14517","relation":"used_in_publication","status":"public"}]},"date_updated":"2023-11-13T09:22:48Z","date_created":"2023-11-13T08:09:10Z","oa_version":"Published Version"},{"alternative_title":["ISTA Thesis"],"type":"dissertation","abstract":[{"lang":"eng","text":"Recent substantial advances in the feld of superconducting circuits have shown its\r\npotential as a leading platform for future quantum computing. In contrast to classical\r\ncomputers based on bits that are represented by a single binary value, 0 or 1, quantum\r\nbits (or qubits) can be in a superposition of both. Thus, quantum computers can store\r\nand handle more information at the same time and a quantum advantage has already\r\nbeen demonstrated for two types of computational tasks. Rapid progress in academic\r\nand industry labs accelerates the development of superconducting processors which may\r\nsoon fnd applications in complex computations, chemical simulations, cryptography, and\r\noptimization. Now that these machines are scaled up to tackle such problems the questions\r\nof qubit interconnects and networks becomes very relevant. How to route signals on-chip\r\nbetween diferent processor components? What is the most efcient way to entangle\r\nqubits? And how to then send and process entangled signals between distant cryostats\r\nhosting superconducting processors?\r\nIn this thesis, we are looking for solutions to these problems by studying the collective\r\nbehavior of superconducting qubit ensembles. We frst demonstrate on-demand tunable\r\ndirectional scattering of microwave photons from a pair of qubits in a waveguide. Such a\r\ndevice can route microwave photons on-chip with a high diode efciency. Then we focus\r\non studying ultra-strong coupling regimes between light (microwave photons) and matter\r\n(superconducting qubits), a regime that could be promising for extremely fast multi-qubit\r\nentanglement generation. Finally, we show coherent pulse storage and periodic revivals\r\nin a fve qubit ensemble strongly coupled to a resonator. Such a reconfgurable storage\r\ndevice could be used as part of a quantum repeater that is needed for longer-distance\r\nquantum communication.\r\nThe achieved high degree of control over multi-qubit ensembles highlights not only the\r\nbeautiful physics of circuit quantum electrodynamics, it also represents the frst step\r\ntoward new quantum simulation and communication methods, and certain techniques\r\nmay also fnd applications in future superconducting quantum computing hardware.\r\n"}],"ddc":["530"],"title":"Controllable states of superconducting Qubit ensembles","status":"public","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"12366","oa_version":"Published Version","file":[{"file_id":"12367","embargo":"2022-12-28","relation":"main_file","checksum":"39eabb1e006b41335f17f3b29af09648","date_updated":"2023-01-26T23:30:44Z","date_created":"2023-01-25T09:41:49Z","access_level":"open_access","file_name":"Final_Thesis_ES_Redchenko.pdf","creator":"cchlebak","file_size":56076868,"content_type":"application/pdf"}],"day":"26","article_processing_charge":"No","has_accepted_license":"1","page":"168","citation":{"ama":"Redchenko E. Controllable states of superconducting Qubit ensembles. 2022. doi:10.15479/at:ista:12132","ieee":"E. Redchenko, “Controllable states of superconducting Qubit ensembles,” Institute of Science and Technology Austria, 2022.","apa":"Redchenko, E. (2022). Controllable states of superconducting Qubit ensembles. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:12132","ista":"Redchenko E. 2022. Controllable states of superconducting Qubit ensembles. Institute of Science and Technology Austria.","short":"E. Redchenko, Controllable States of Superconducting Qubit Ensembles, Institute of Science and Technology Austria, 2022.","mla":"Redchenko, Elena. Controllable States of Superconducting Qubit Ensembles. Institute of Science and Technology Austria, 2022, doi:10.15479/at:ista:12132.","chicago":"Redchenko, Elena. “Controllable States of Superconducting Qubit Ensembles.” Institute of Science and Technology Austria, 2022. https://doi.org/10.15479/at:ista:12132."},"date_published":"2022-09-26T00:00:00Z","file_date_updated":"2023-01-26T23:30:44Z","ec_funded":1,"publication_status":"published","publisher":"Institute of Science and Technology Austria","department":[{"_id":"GradSch"},{"_id":"JoFi"}],"year":"2022","date_created":"2023-01-25T09:17:02Z","date_updated":"2023-05-26T09:29:07Z","author":[{"last_name":"Redchenko","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","full_name":"Redchenko, Elena"}],"month":"09","publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-024-4"]},"project":[{"grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"International IST Doctoral Program"},{"call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425"},{"grant_number":"862644","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","call_identifier":"H2020","name":"Quantum readout techniques and technologies"}],"oa":1,"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"},{"_id":"EM-Fac"}],"degree_awarded":"PhD","supervisor":[{"last_name":"Fink","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M"}],"language":[{"iso":"eng"}],"doi":"10.15479/at:ista:12132"},{"year":"2021","_id":"10645","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","department":[{"_id":"JoFi"}],"publisher":"Bluefors Oy","status":"public","title":"Qubit energy-relaxation statistics in the Bluefors quantum measurement system","publication_status":"published","author":[{"full_name":"Simbierowicz, Slawomir","first_name":"Slawomir","last_name":"Simbierowicz"},{"first_name":"Chunyan","last_name":"Shi","full_name":"Shi, Chunyan"},{"full_name":"Collodo, Michele","last_name":"Collodo","first_name":"Michele"},{"full_name":"Kirste, Moritz","first_name":"Moritz","last_name":"Kirste"},{"full_name":"Hassani, Farid","first_name":"Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M"},{"full_name":"Bylander, Jonas","first_name":"Jonas","last_name":"Bylander"},{"last_name":"Perez Lozano","first_name":"Daniel","full_name":"Perez Lozano, Daniel"},{"full_name":"Lake, Russell","last_name":"Lake","first_name":"Russell"}],"oa_version":"Published Version","date_updated":"2022-01-19T09:11:39Z","date_created":"2022-01-19T08:41:14Z","type":"other_academic_publication","alternative_title":["Bluefors Blog"],"place":"Helsinki, Finland","abstract":[{"text":"Superconducting qubits have emerged as a highly versatile and useful platform for quantum technological applications [1]. Bluefors and Zurich Instruments have supported the growth of this field from the 2010s onwards by providing well-engineered and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit lifetime is a critical system property. Therefore, considerable effort has already gone into measuring qubit energy-relaxation timescales and their fluctuations, see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum device requires users to perform time consuming measurements. One measurement challenge is that the detection of the state-dependent\r\nresponse of a superconducting resonator due to a dispersively-coupled qubit requires an inherently low signal level. Consequently, measurements must be performed using a microwave probe that contains only a few microwave photons. Improving the signal-to-noise ratio (SNR) by using near-quantum limited parametric amplifiers as well as the use of optimized signal processing enabled by efficient room temperature instrumentation help to reduce measurement time. An empirical observation for fixed frequency transmons from recent literature is that as the energy-relaxation time 𝑇𝑇1 increases, so do its natural temporal fluctuations [7], [10]. This necessitates many repeated measurements to understand the statistics (see for example, Ref. [10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement times are expected to obtain accurate statistics. As described below, the scaling of the widths of the qubit energy-relaxation distributions also reveal clues about the origin of the energy-relaxation.","lang":"eng"}],"oa":1,"citation":{"ieee":"S. Simbierowicz et al., Qubit energy-relaxation statistics in the Bluefors quantum measurement system. Helsinki, Finland: Bluefors Oy, 2021.","apa":"Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J. M., … Lake, R. (2021). Qubit energy-relaxation statistics in the Bluefors quantum measurement system. Helsinki, Finland: Bluefors Oy.","ista":"Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.","ama":"Simbierowicz S, Shi C, Collodo M, et al. Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System. Helsinki, Finland: Bluefors Oy; 2021.","chicago":"Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake. Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System. Helsinki, Finland: Bluefors Oy, 2021.","short":"S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J. Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.","mla":"Simbierowicz, Slawomir, et al. Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System. Bluefors Oy, 2021."},"main_file_link":[{"url":"https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/","open_access":"1"}],"page":"8","quality_controlled":"1","date_published":"2021-06-03T00:00:00Z","language":[{"iso":"eng"}],"keyword":["Application note"],"article_processing_charge":"No","day":"03","month":"06"},{"author":[{"full_name":"Lake, Russell","first_name":"Russell","last_name":"Lake"},{"full_name":"Simbierowicz, Slawomir","last_name":"Simbierowicz","first_name":"Slawomir"},{"full_name":"Krantz, Philip","last_name":"Krantz","first_name":"Philip"},{"full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid","last_name":"Hassani"},{"full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M"}],"date_created":"2022-01-19T08:29:57Z","date_updated":"2022-01-19T09:11:33Z","oa_version":"Published Version","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","_id":"10644","year":"2021","publication_status":"published","title":"The Bluefors dilution refrigerator as an integrated quantum measurement system","status":"public","publisher":"Bluefors Oy","department":[{"_id":"JoFi"}],"abstract":[{"text":"The purpose of this application note is to demonstrate a working example of a superconducting qubit measurement in a Bluefors cryostat using the Keysight quantum control hardware. Our motivation is twofold. First, we provide pre-qualification data that the Bluefors cryostat, including filtering and wiring, can support long-lived qubits. Second, we demonstrate that the Keysight system (controlled using Labber) provides a straightforward solution to perform these characterization measurements. This document is intended as a brief guide for starting an experimental platform for testing superconducting qubits. The setup described here is an immediate jumping off point for a suite of applications including testing quantum logical gates, quantum optics with microwaves, or even using the qubit itself as a sensitive probe of local electromagnetic fields. Qubit measurements rely on high performance of both the physical sample environment and the measurement electronics. An overview of the cryogenic system is shown in Figure 1, and an overview of the integration between the electronics and cryostat (including wiring details) is shown in Figure 2.","lang":"eng"}],"type":"other_academic_publication","place":"Helsinki, Finland","alternative_title":["Bluefors Blog"],"date_published":"2021-04-20T00:00:00Z","language":[{"iso":"eng"}],"citation":{"ama":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System. Helsinki, Finland: Bluefors Oy; 2021.","ista":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland: Bluefors Oy, 9p.","ieee":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, The Bluefors dilution refrigerator as an integrated quantum measurement system. Helsinki, Finland: Bluefors Oy, 2021.","apa":"Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., & Fink, J. M. (2021). The Bluefors dilution refrigerator as an integrated quantum measurement system. Helsinki, Finland: Bluefors Oy.","mla":"Lake, Russell, et al. The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System. Bluefors Oy, 2021.","short":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.","chicago":"Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and Johannes M Fink. The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System. Helsinki, Finland: Bluefors Oy, 2021."},"main_file_link":[{"open_access":"1","url":"https://bluefors.com/blog/integrated-quantum-measurement-system/"}],"oa":1,"quality_controlled":"1","page":"9","day":"20","month":"04","article_processing_charge":"No","keyword":["Application note"]},{"issue":"2","abstract":[{"text":"In the recent years important experimental advances in resonant electro-optic modulators as high-efficiency sources for coherent frequency combs and as devices for quantum information transfer have been realized, where strong optical and microwave mode coupling were achieved. These features suggest electro-optic-based devices as candidates for entangled optical frequency comb sources. In the present work, I study the generation of entangled optical frequency combs in millimeter-sized resonant electro-optic modulators. These devices profit from the experimentally proven advantages such as nearly constant optical free spectral ranges over several gigahertz, and high optical and microwave quality factors. The generation of frequency multiplexed quantum channels with spectral bandwidth in the MHz range for conservative parameter values paves the way towards novel uses in long-distance hybrid quantum networks, quantum key distribution, enhanced optical metrology, and quantum computing.","lang":"eng"}],"type":"journal_article","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9242","intvolume":" 103","status":"public","title":"Frequency-multiplexed hybrid optical entangled source based on the Pockels effect","article_processing_charge":"No","day":"11","scopus_import":"1","date_published":"2021-02-11T00:00:00Z","citation":{"chicago":"Rueda Sanchez, Alfredo R. “Frequency-Multiplexed Hybrid Optical Entangled Source Based on the Pockels Effect.” Physical Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.103.023708.","short":"A.R. Rueda Sanchez, Physical Review A 103 (2021).","mla":"Rueda Sanchez, Alfredo R. “Frequency-Multiplexed Hybrid Optical Entangled Source Based on the Pockels Effect.” Physical Review A, vol. 103, no. 2, 023708, American Physical Society, 2021, doi:10.1103/PhysRevA.103.023708.","apa":"Rueda Sanchez, A. R. (2021). Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.103.023708","ieee":"A. R. Rueda Sanchez, “Frequency-multiplexed hybrid optical entangled source based on the Pockels effect,” Physical Review A, vol. 103, no. 2. American Physical Society, 2021.","ista":"Rueda Sanchez AR. 2021. Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. Physical Review A. 103(2), 023708.","ama":"Rueda Sanchez AR. Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. Physical Review A. 2021;103(2). doi:10.1103/PhysRevA.103.023708"},"publication":"Physical Review A","article_type":"original","article_number":"023708","author":[{"full_name":"Rueda Sanchez, Alfredo R","last_name":"Rueda Sanchez","first_name":"Alfredo R","orcid":"0000-0001-6249-5860","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87"}],"volume":103,"date_created":"2021-03-14T23:01:33Z","date_updated":"2023-08-07T14:11:18Z","year":"2021","acknowledgement":"I thank Prof. Shabir Barzanjeh and Dr. Ulrich Vogl for the fruitful discussions.\r\n","publisher":"American Physical Society","department":[{"_id":"JoFi"}],"publication_status":"published","publication_identifier":{"issn":["2469-9926"],"eissn":["2469-9934"]},"month":"02","doi":"10.1103/PhysRevA.103.023708","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://arxiv.org/abs/2010.05356","open_access":"1"}],"oa":1,"external_id":{"isi":["000617037900013"],"arxiv":["2010.05356"]},"quality_controlled":"1","isi":1},{"article_processing_charge":"No","month":"10","day":"22","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"},"citation":{"chicago":"Peruzzo, Matilda, Farid Hassani, Grisha Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” Zenodo, 2021. https://doi.org/10.5281/ZENODO.5592103.","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, (2021).","mla":"Peruzzo, Matilda, et al. Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction. Zenodo, 2021, doi:10.5281/ZENODO.5592103.","ieee":"M. Peruzzo et al., “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction.” Zenodo, 2021.","apa":"Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M., & Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. Zenodo. https://doi.org/10.5281/ZENODO.5592103","ista":"Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM. 2021. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction, Zenodo, 10.5281/ZENODO.5592103.","ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. 2021. doi:10.5281/ZENODO.5592103"},"oa":1,"main_file_link":[{"url":"https://doi.org/10.5281/zenodo.5592104","open_access":"1"}],"doi":"10.5281/ZENODO.5592103","date_published":"2021-10-22T00:00:00Z","type":"research_data_reference","abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction\". Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}],"publisher":"Zenodo","department":[{"_id":"JoFi"}],"status":"public","title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","ddc":["530"],"_id":"13057","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2021","oa_version":"Published Version","date_updated":"2023-08-11T10:44:21Z","date_created":"2023-05-23T13:42:27Z","related_material":{"record":[{"id":"9928","status":"public","relation":"used_in_publication"}]},"author":[{"id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628","first_name":"Matilda","last_name":"Peruzzo","full_name":"Peruzzo, Matilda"},{"last_name":"Hassani","first_name":"Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","full_name":"Hassani, Farid"},{"full_name":"Szep, Grisha","last_name":"Szep","first_name":"Grisha"},{"full_name":"Trioni, Andrea","first_name":"Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87"},{"id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko","first_name":"Elena","full_name":"Redchenko, Elena"},{"last_name":"Zemlicka","first_name":"Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","full_name":"Zemlicka, Martin"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","last_name":"Fink","full_name":"Fink, Johannes M"}]},{"article_processing_charge":"No","has_accepted_license":"1","day":"24","scopus_import":"1","keyword":["quantum physics","mesoscale and nanoscale physics"],"date_published":"2021-11-24T00:00:00Z","citation":{"ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. PRX Quantum. 2021;2(4):040341. doi:10.1103/PRXQuantum.2.040341","ista":"Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM. 2021. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. PRX Quantum. 2(4), 040341.","apa":"Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M., & Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. PRX Quantum. American Physical Society. https://doi.org/10.1103/PRXQuantum.2.040341","ieee":"M. Peruzzo et al., “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction,” PRX Quantum, vol. 2, no. 4. American Physical Society, p. 040341, 2021.","mla":"Peruzzo, Matilda, et al. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” PRX Quantum, vol. 2, no. 4, American Physical Society, 2021, p. 040341, doi:10.1103/PRXQuantum.2.040341.","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, PRX Quantum 2 (2021) 040341.","chicago":"Peruzzo, Matilda, Farid Hassani, Gregory Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” PRX Quantum. American Physical Society, 2021. https://doi.org/10.1103/PRXQuantum.2.040341."},"publication":"PRX Quantum","page":"040341","article_type":"original","issue":"4","abstract":[{"text":"There are two elementary superconducting qubit types that derive directly from the quantum harmonic oscillator. In one, the inductor is replaced by a nonlinear Josephson junction to realize the widely used charge qubits with a compact phase variable and a discrete charge wave function. In the other, the junction is added in parallel, which gives rise to an extended phase variable, continuous wave functions, and a rich energy-level structure due to the loop topology. While the corresponding rf superconducting quantum interference device Hamiltonian was introduced as a quadratic quasi-one-dimensional potential approximation to describe the fluxonium qubit implemented with long Josephson-junction arrays, in this work we implement it directly using a linear superinductor formed by a single uninterrupted aluminum wire. We present a large variety of qubits, all stemming from the same circuit but with drastically different characteristic energy scales. This includes flux and fluxonium qubits but also the recently introduced quasicharge qubit with strongly enhanced zero-point phase fluctuations and a heavily suppressed flux dispersion. The use of a geometric inductor results in high reproducibility of the inductive energy as guaranteed by top-down lithography—a key ingredient for intrinsically protected superconducting qubits.","lang":"eng"}],"type":"journal_article","oa_version":"Published Version","file":[{"relation":"main_file","file_id":"10641","checksum":"36eb41ea43d8ca22b0efab12419e4eb2","success":1,"date_updated":"2022-01-18T11:29:33Z","date_created":"2022-01-18T11:29:33Z","access_level":"open_access","file_name":"2021_PRXQuantum_Peruzzo.pdf","content_type":"application/pdf","file_size":4247422,"creator":"cchlebak"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9928","intvolume":" 2","ddc":["530"],"title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","status":"public","publication_identifier":{"eissn":["2691-3399"]},"month":"11","doi":"10.1103/PRXQuantum.2.040341","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"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":["000723015100001"],"arxiv":["2106.05882"]},"oa":1,"project":[{"_id":"26927A52-B435-11E9-9278-68D0E5697425","grant_number":"F07105","call_identifier":"FWF","name":"Integrating superconducting quantum circuits"},{"call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"},{"_id":"2622978C-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"}],"quality_controlled":"1","isi":1,"ec_funded":1,"file_date_updated":"2022-01-18T11:29:33Z","related_material":{"record":[{"id":"13057","status":"public","relation":"research_data"},{"id":"9920","status":"public","relation":"dissertation_contains"}]},"author":[{"full_name":"Peruzzo, Matilda","last_name":"Peruzzo","first_name":"Matilda","orcid":"0000-0002-3415-4628","id":"3F920B30-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani","first_name":"Farid"},{"last_name":"Szep","first_name":"Gregory","full_name":"Szep, Gregory"},{"first_name":"Andrea","last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","full_name":"Trioni, Andrea"},{"full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","first_name":"Elena","last_name":"Redchenko"},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","first_name":"Martin","full_name":"Zemlicka, Martin"},{"full_name":"Fink, Johannes M","first_name":"Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X"}],"volume":2,"date_created":"2021-08-17T08:14:18Z","date_updated":"2023-09-07T13:31:22Z","year":"2021","acknowledgement":"We thank W. Hughes for analytic and numerical modeling during the early stages of this work, J. Koch for discussions and support with the scqubits package, R. Sett, P. Zielinski, and L. Drmic for software development, and G. Katsaros for equipment support, as well as the MIBA workshop and the Institute of Science and Technology Austria nanofabrication facility. We thank I. Pop, S. Deleglise, and E. Flurin for discussions. This work was supported by a NOMIS Foundation research grant, the Austrian Science Fund (FWF) through BeyondC (F7105), and IST Austria. M.P. is the recipient of a Pöttinger scholarship at IST Austria. E.R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.","department":[{"_id":"JoFi"},{"_id":"NanoFab"},{"_id":"M-Shop"}],"publisher":"American Physical Society","publication_status":"published"},{"publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-013-8"]},"month":"08","doi":"10.15479/at:ista:9920","language":[{"iso":"eng"}],"supervisor":[{"orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M","full_name":"Fink, Johannes M"}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"degree_awarded":"PhD","oa":1,"file_date_updated":"2021-09-06T08:39:47Z","related_material":{"record":[{"id":"9928","relation":"part_of_dissertation","status":"public"},{"id":"8755","status":"public","relation":"part_of_dissertation"}]},"author":[{"first_name":"Matilda","last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628","full_name":"Peruzzo, Matilda"}],"date_updated":"2023-09-07T13:31:22Z","date_created":"2021-08-16T09:44:09Z","year":"2021","publisher":"Institute of Science and Technology Austria","department":[{"_id":"GradSch"},{"_id":"JoFi"}],"publication_status":"published","has_accepted_license":"1","article_processing_charge":"No","day":"19","keyword":["quantum computing","superinductor","quantum metrology"],"date_published":"2021-08-19T00:00:00Z","citation":{"chicago":"Peruzzo, Matilda. “Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9920.","short":"M. Peruzzo, Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics, Institute of Science and Technology Austria, 2021.","mla":"Peruzzo, Matilda. Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics. Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9920.","ieee":"M. Peruzzo, “Geometric superinductors and their applications in circuit quantum electrodynamics,” Institute of Science and Technology Austria, 2021.","apa":"Peruzzo, M. (2021). Geometric superinductors and their applications in circuit quantum electrodynamics. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9920","ista":"Peruzzo M. 2021. Geometric superinductors and their applications in circuit quantum electrodynamics. Institute of Science and Technology Austria.","ama":"Peruzzo M. Geometric superinductors and their applications in circuit quantum electrodynamics. 2021. doi:10.15479/at:ista:9920"},"page":"149","abstract":[{"lang":"eng","text":"This work is concerned with two fascinating circuit quantum electrodynamics components, the Josephson junction and the geometric superinductor, and the interesting experiments that can be done by combining the two. The Josephson junction has revolutionized the field of superconducting circuits as a non-linear dissipation-less circuit element and is used in almost all superconducting qubit implementations since the 90s. On the other hand, the superinductor is a relatively new circuit element introduced as a key component of the fluxonium qubit in 2009. This is an inductor with characteristic impedance larger than the resistance quantum and self-resonance frequency in the GHz regime. The combination of these two elements can occur in two fundamental ways: in parallel and in series. When connected in parallel the two create the fluxonium qubit, a loop with large inductance and a rich energy spectrum reliant on quantum tunneling. On the other hand placing the two elements in series aids with the measurement of the IV curve of a single Josephson junction in a high impedance environment. In this limit theory predicts that the junction will behave as its dual element: the phase-slip junction. While the Josephson junction acts as a non-linear inductor the phase-slip junction has the behavior of a non-linear capacitance and can be used to measure new Josephson junction phenomena, namely Coulomb blockade of Cooper pairs and phase-locked Bloch oscillations. The latter experiment allows for a direct link between frequency and current which is an elusive connection in quantum metrology. This work introduces the geometric superinductor, a superconducting circuit element where the high inductance is due to the geometry rather than the material properties of the superconductor, realized from a highly miniaturized superconducting planar coil. These structures will be described and characterized as resonators and qubit inductors and progress towards the measurement of phase-locked Bloch oscillations will be presented."}],"type":"dissertation","alternative_title":["ISTA Thesis"],"file":[{"date_updated":"2021-09-06T08:39:47Z","date_created":"2021-08-16T09:33:21Z","checksum":"3cd1986efde5121d7581f6fcf9090da8","file_id":"9924","relation":"source_file","creator":"mperuzzo","file_size":151387283,"content_type":"application/x-zip-compressed","file_name":"GeometricSuperinductorsForCQED.zip","access_level":"closed"},{"file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-1b.pdf","access_level":"open_access","creator":"mperuzzo","file_size":17596344,"content_type":"application/pdf","file_id":"9939","relation":"main_file","date_updated":"2021-09-06T08:39:47Z","date_created":"2021-08-18T14:20:06Z","checksum":"50928c621cdf0775d7a5906b9dc8602c"},{"content_type":"application/pdf","file_size":17592425,"creator":"mperuzzo","access_level":"closed","description":"Extra copy of the thesis as PDF/A-2b","file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-2b.pdf","checksum":"37f486aa1b622fe44af00d627ec13f6c","date_updated":"2021-09-06T08:39:47Z","date_created":"2021-08-18T14:20:09Z","relation":"other","file_id":"9940"}],"oa_version":"Published Version","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"9920","title":"Geometric superinductors and their applications in circuit quantum electrodynamics","status":"public","ddc":["539"]},{"_id":"9815","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 6","status":"public","ddc":["530"],"title":"Thermal noise in electro-optic devices at cryogenic temperatures","file":[{"date_created":"2021-08-09T12:23:13Z","date_updated":"2021-08-09T12:23:13Z","checksum":"b15c2c228487a75002c3b52d56f23d5c","relation":"main_file","file_id":"9836","content_type":"application/pdf","file_size":2366118,"creator":"cchlebak","file_name":"2021_QuantumScienceTechnology_Mobassem.pdf","access_level":"open_access"}],"oa_version":"Published Version","type":"journal_article","issue":"4","abstract":[{"text":"The quantum bits (qubits) on which superconducting quantum computers are based have energy scales corresponding to photons with GHz frequencies. The energy of photons in the gigahertz domain is too low to allow transmission through the noisy room-temperature environment, where the signal would be lost in thermal noise. Optical photons, on the other hand, have much higher energies, and signals can be detected using highly efficient single-photon detectors. Transduction from microwave to optical frequencies is therefore a potential enabling technology for quantum devices. However, in such a device the optical pump can be a source of thermal noise and thus degrade the fidelity; the similarity of input microwave state to the output optical state. In order to investigate the magnitude of this effect we model the sub-Kelvin thermal behavior of an electro-optic transducer based on a lithium niobate whispering gallery mode resonator. We find that there is an optimum power level for a continuous pump, whilst pulsed operation of the pump increases the fidelity of the conversion.","lang":"eng"}],"citation":{"mla":"Mobassem, Sonia, et al. “Thermal Noise in Electro-Optic Devices at Cryogenic Temperatures.” Quantum Science and Technology, vol. 6, no. 4, 045005, IOP Publishing, 2021, doi:10.1088/2058-9565/ac0f36.","short":"S. Mobassem, N.J. Lambert, A.R. Rueda Sanchez, J.M. Fink, G. Leuchs, H.G.L. Schwefel, Quantum Science and Technology 6 (2021).","chicago":"Mobassem, Sonia, Nicholas J. Lambert, Alfredo R Rueda Sanchez, Johannes M Fink, Gerd Leuchs, and Harald G.L. Schwefel. “Thermal Noise in Electro-Optic Devices at Cryogenic Temperatures.” Quantum Science and Technology. IOP Publishing, 2021. https://doi.org/10.1088/2058-9565/ac0f36.","ama":"Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL. Thermal noise in electro-optic devices at cryogenic temperatures. Quantum Science and Technology. 2021;6(4). doi:10.1088/2058-9565/ac0f36","ista":"Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL. 2021. Thermal noise in electro-optic devices at cryogenic temperatures. Quantum Science and Technology. 6(4), 045005.","apa":"Mobassem, S., Lambert, N. J., Rueda Sanchez, A. R., Fink, J. M., Leuchs, G., & Schwefel, H. G. L. (2021). Thermal noise in electro-optic devices at cryogenic temperatures. Quantum Science and Technology. IOP Publishing. https://doi.org/10.1088/2058-9565/ac0f36","ieee":"S. Mobassem, N. J. Lambert, A. R. Rueda Sanchez, J. M. Fink, G. Leuchs, and H. G. L. Schwefel, “Thermal noise in electro-optic devices at cryogenic temperatures,” Quantum Science and Technology, vol. 6, no. 4. IOP Publishing, 2021."},"publication":"Quantum Science and Technology","article_type":"original","date_published":"2021-07-15T00:00:00Z","scopus_import":"1","article_processing_charge":"Yes","has_accepted_license":"1","day":"15","acknowledgement":"NJL is supported by the MBIE Endeavour Fund (UOOX1805) and GL is by the Julius von Haast Fellowship of New Zealand. SM acknowledges stimulating discussions with T M Jensen.","year":"2021","department":[{"_id":"JoFi"}],"publisher":"IOP Publishing","publication_status":"published","author":[{"first_name":"Sonia","last_name":"Mobassem","full_name":"Mobassem, Sonia"},{"full_name":"Lambert, Nicholas J.","last_name":"Lambert","first_name":"Nicholas J."},{"full_name":"Rueda Sanchez, Alfredo R","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6249-5860","first_name":"Alfredo R","last_name":"Rueda Sanchez"},{"full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","last_name":"Fink"},{"last_name":"Leuchs","first_name":"Gerd","full_name":"Leuchs, Gerd"},{"full_name":"Schwefel, Harald G.L.","first_name":"Harald G.L.","last_name":"Schwefel"}],"volume":6,"date_updated":"2023-10-17T12:54:54Z","date_created":"2021-08-08T22:01:25Z","article_number":"045005","file_date_updated":"2021-08-09T12:23:13Z","external_id":{"arxiv":["2008.08764"],"isi":["000673081500001"]},"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,"isi":1,"quality_controlled":"1","doi":"10.1088/2058-9565/ac0f36","language":[{"iso":"eng"}],"publication_identifier":{"eissn":["2058-9565"]},"month":"07"}]