--- _id: '6786' abstract: - lang: eng text: Dipolar coupling plays a fundamental role in the interaction between electrically or magnetically polarized species such as magnetic atoms and dipolar molecules in a gas or dipolar excitons in the solid state. Unlike Coulomb or contactlike interactions found in many atomic, molecular, and condensed-matter systems, this interaction is long-ranged and highly anisotropic, as it changes from repulsive to attractive depending on the relative positions and orientation of the dipoles. Because of this unique property, many exotic, symmetry-breaking collective states have been recently predicted for cold dipolar gases, but only a few have been experimentally detected and only in dilute atomic dipolar Bose-Einstein condensates. Here, we report on the first observation of attractive dipolar coupling between excitonic dipoles using a new design of stacked semiconductor bilayers. We show that the presence of a dipolar exciton fluid in one bilayer modifies the spatial distribution and increases the binding energy of excitonic dipoles in a vertically remote layer. The binding energy changes are explained using a many-body polaron model describing the deformation of the exciton cloud due to its interaction with a remote dipolar exciton. The surprising nonmonotonic dependence on the cloud density indicates the important role of dipolar correlations, which is unique to dense, strongly interacting dipolar solid-state systems. Our concept provides a route for the realization of dipolar lattices with strong anisotropic interactions in semiconductor systems, which open the way for the observation of theoretically predicted new and exotic collective phases, as well as for engineering and sensing their collective excitations. article_number: '021026' article_processing_charge: No article_type: original author: - first_name: Colin full_name: Hubert, Colin last_name: Hubert - first_name: Yifat full_name: Baruchi, Yifat last_name: Baruchi - first_name: Yotam full_name: Mazuz-Harpaz, Yotam last_name: Mazuz-Harpaz - first_name: Kobi full_name: Cohen, Kobi last_name: Cohen - first_name: Klaus full_name: Biermann, Klaus last_name: Biermann - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Ken full_name: West, Ken last_name: West - first_name: Loren full_name: Pfeiffer, Loren last_name: Pfeiffer - first_name: Ronen full_name: Rapaport, Ronen last_name: Rapaport - first_name: Paulo full_name: Santos, Paulo last_name: Santos citation: ama: Hubert C, Baruchi Y, Mazuz-Harpaz Y, et al. Attractive dipolar coupling between stacked exciton fluids. Physical Review X. 2019;9(2). doi:10.1103/PhysRevX.9.021026 apa: Hubert, C., Baruchi, Y., Mazuz-Harpaz, Y., Cohen, K., Biermann, K., Lemeshko, M., … Santos, P. (2019). Attractive dipolar coupling between stacked exciton fluids. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.9.021026 chicago: Hubert, Colin, Yifat Baruchi, Yotam Mazuz-Harpaz, Kobi Cohen, Klaus Biermann, Mikhail Lemeshko, Ken West, Loren Pfeiffer, Ronen Rapaport, and Paulo Santos. “Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review X. American Physical Society, 2019. https://doi.org/10.1103/PhysRevX.9.021026. ieee: C. Hubert et al., “Attractive dipolar coupling between stacked exciton fluids,” Physical Review X, vol. 9, no. 2. American Physical Society, 2019. ista: Hubert C, Baruchi Y, Mazuz-Harpaz Y, Cohen K, Biermann K, Lemeshko M, West K, Pfeiffer L, Rapaport R, Santos P. 2019. Attractive dipolar coupling between stacked exciton fluids. Physical Review X. 9(2), 021026. mla: Hubert, Colin, et al. “Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review X, vol. 9, no. 2, 021026, American Physical Society, 2019, doi:10.1103/PhysRevX.9.021026. short: C. Hubert, Y. Baruchi, Y. Mazuz-Harpaz, K. Cohen, K. Biermann, M. Lemeshko, K. West, L. Pfeiffer, R. Rapaport, P. Santos, Physical Review X 9 (2019). date_created: 2019-08-11T21:59:20Z date_published: 2019-05-08T00:00:00Z date_updated: 2024-02-28T13:12:48Z day: '08' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevX.9.021026 external_id: arxiv: - '1807.11238' isi: - '000467402900001' file: - access_level: open_access checksum: 065ff82ee4a1d2c3773ce4b76ff4213c content_type: application/pdf creator: dernst date_created: 2019-08-12T12:14:18Z date_updated: 2020-07-14T12:47:40Z file_id: '6802' file_name: 2019_PhysReviewX_Hubert.pdf file_size: 1193550 relation: main_file file_date_updated: 2020-07-14T12:47:40Z has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '2' language: - iso: eng month: '05' oa: 1 oa_version: Published Version project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review X publication_identifier: eissn: - 2160-3308 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Attractive dipolar coupling between stacked exciton fluids tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 9 year: '2019' ... --- _id: '7013' abstract: - lang: eng text: Chains of superconducting circuit devices provide a natural platform for studies of synthetic bosonic quantum matter. Motivated by the recent experimental progress in realizing disordered and interacting chains of superconducting transmon devices, we study the bosonic many-body localization phase transition using the methods of exact diagonalization as well as matrix product state dynamics. We estimate the location of transition separating the ergodic and the many-body localized phases as a function of the disorder strength and the many-body on-site interaction strength. The main difference between the bosonic model realized by superconducting circuits and similar fermionic model is that the effect of the on-site interaction is stronger due to the possibility of multiple excitations occupying the same site. The phase transition is found to be robust upon including longer-range hopping and interaction terms present in the experiments. Furthermore, we calculate experimentally relevant local observables and show that their temporal fluctuations can be used to distinguish between the dynamics of Anderson insulator, many-body localization, and delocalized phases. While we consider unitary dynamics, neglecting the effects of dissipation, decoherence, and measurement back action, the timescales on which the dynamics is unitary are sufficient for observation of characteristic dynamics in the many-body localized phase. Moreover, the experimentally available disorder strength and interactions allow for tuning the many-body localization phase transition, thus making the arrays of superconducting circuit devices a promising platform for exploring localization physics and phase transition. article_number: '134504' article_processing_charge: No article_type: original author: - first_name: Tuure full_name: Orell, Tuure last_name: Orell - first_name: Alexios full_name: Michailidis, Alexios id: 36EBAD38-F248-11E8-B48F-1D18A9856A87 last_name: Michailidis orcid: 0000-0002-8443-1064 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Matti full_name: Silveri, Matti last_name: Silveri citation: ama: Orell T, Michailidis A, Serbyn M, Silveri M. Probing the many-body localization phase transition with superconducting circuits. Physical Review B. 2019;100(13). doi:10.1103/physrevb.100.134504 apa: Orell, T., Michailidis, A., Serbyn, M., & Silveri, M. (2019). Probing the many-body localization phase transition with superconducting circuits. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.100.134504 chicago: Orell, Tuure, Alexios Michailidis, Maksym Serbyn, and Matti Silveri. “Probing the Many-Body Localization Phase Transition with Superconducting Circuits.” Physical Review B. American Physical Society, 2019. https://doi.org/10.1103/physrevb.100.134504. ieee: T. Orell, A. Michailidis, M. Serbyn, and M. Silveri, “Probing the many-body localization phase transition with superconducting circuits,” Physical Review B, vol. 100, no. 13. American Physical Society, 2019. ista: Orell T, Michailidis A, Serbyn M, Silveri M. 2019. Probing the many-body localization phase transition with superconducting circuits. Physical Review B. 100(13), 134504. mla: Orell, Tuure, et al. “Probing the Many-Body Localization Phase Transition with Superconducting Circuits.” Physical Review B, vol. 100, no. 13, 134504, American Physical Society, 2019, doi:10.1103/physrevb.100.134504. short: T. Orell, A. Michailidis, M. Serbyn, M. Silveri, Physical Review B 100 (2019). date_created: 2019-11-13T08:25:48Z date_published: 2019-10-01T00:00:00Z date_updated: 2024-02-28T13:13:13Z day: '01' department: - _id: MaSe doi: 10.1103/physrevb.100.134504 external_id: arxiv: - '1907.04043' isi: - '000489036500004' intvolume: ' 100' isi: 1 issue: '13' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.04043 month: '10' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Probing the many-body localization phase transition with superconducting circuits type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 100 year: '2019' ... --- _id: '7200' abstract: - lang: eng text: Recent scanning tunneling microscopy experiments in NbN thin disordered superconducting films found an emergent inhomogeneity at the scale of tens of nanometers. This inhomogeneity is mirrored by an apparent dimensional crossover in the paraconductivity measured in transport above the superconducting critical temperature Tc. This behavior was interpreted in terms of an anomalous diffusion of fluctuating Cooper pairs that display a quasiconfinement (i.e., a slowing down of their diffusive dynamics) on length scales shorter than the inhomogeneity identified by tunneling experiments. Here, we assume this anomalous diffusive behavior of fluctuating Cooper pairs and calculate the effect of these fluctuations on the electron density of states above Tc. We find that the density of states is substantially suppressed up to temperatures well above Tc. This behavior, which is closely reminiscent of a pseudogap, only arises from the anomalous diffusion of fluctuating Cooper pairs in the absence of stable preformed pairs, setting the stage for an intermediate behavior between the two common paradigms in the superconducting-insulator transition, namely, the localization of Cooper pairs (the so-called bosonic scenario) and the breaking of Cooper pairs into unpaired electrons due to strong disorder (the so-called fermionic scenario). article_number: '174518' article_processing_charge: No article_type: original author: - first_name: Pietro full_name: Brighi, Pietro id: 4115AF5C-F248-11E8-B48F-1D18A9856A87 last_name: Brighi orcid: 0000-0002-7969-2729 - first_name: Marco full_name: Grilli, Marco last_name: Grilli - first_name: Brigitte full_name: Leridon, Brigitte last_name: Leridon - first_name: Sergio full_name: Caprara, Sergio last_name: Caprara citation: ama: Brighi P, Grilli M, Leridon B, Caprara S. Effect of anomalous diffusion of fluctuating Cooper pairs on the density of states of superconducting NbN thin films. Physical Review B. 2019;100(17). doi:10.1103/PhysRevB.100.174518 apa: Brighi, P., Grilli, M., Leridon, B., & Caprara, S. (2019). Effect of anomalous diffusion of fluctuating Cooper pairs on the density of states of superconducting NbN thin films. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.100.174518 chicago: Brighi, Pietro, Marco Grilli, Brigitte Leridon, and Sergio Caprara. “Effect of Anomalous Diffusion of Fluctuating Cooper Pairs on the Density of States of Superconducting NbN Thin Films.” Physical Review B. American Physical Society, 2019. https://doi.org/10.1103/PhysRevB.100.174518. ieee: P. Brighi, M. Grilli, B. Leridon, and S. Caprara, “Effect of anomalous diffusion of fluctuating Cooper pairs on the density of states of superconducting NbN thin films,” Physical Review B, vol. 100, no. 17. American Physical Society, 2019. ista: Brighi P, Grilli M, Leridon B, Caprara S. 2019. Effect of anomalous diffusion of fluctuating Cooper pairs on the density of states of superconducting NbN thin films. Physical Review B. 100(17), 174518. mla: Brighi, Pietro, et al. “Effect of Anomalous Diffusion of Fluctuating Cooper Pairs on the Density of States of Superconducting NbN Thin Films.” Physical Review B, vol. 100, no. 17, 174518, American Physical Society, 2019, doi:10.1103/PhysRevB.100.174518. short: P. Brighi, M. Grilli, B. Leridon, S. Caprara, Physical Review B 100 (2019). date_created: 2019-12-22T23:00:41Z date_published: 2019-11-25T00:00:00Z date_updated: 2024-02-28T13:14:08Z day: '25' department: - _id: MaSe doi: 10.1103/PhysRevB.100.174518 external_id: arxiv: - '1907.13579' isi: - '000498845700006' intvolume: ' 100' isi: 1 issue: '17' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.13579 month: '11' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Effect of anomalous diffusion of fluctuating Cooper pairs on the density of states of superconducting NbN thin films type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 100 year: '2019' ... --- _id: '6779' abstract: - lang: eng text: "Recent studies suggest that unstable recurrent solutions of the Navier-Stokes equation provide new insights\r\ninto dynamics of turbulent flows. In this study, we compute an extensive network of dynamical connections\r\nbetween such solutions in a weakly turbulent quasi-two-dimensional Kolmogorov flow that lies in the inversion symmetric subspace. In particular, we find numerous isolated heteroclinic connections between different\r\ntypes of solutions—equilibria, periodic, and quasiperiodic orbits—as well as continua of connections forming\r\nhigher-dimensional connecting manifolds. We also compute a homoclinic connection of a periodic orbit and\r\nprovide strong evidence that the associated homoclinic tangle forms the chaotic repeller that underpins transient\r\nturbulence in the symmetric subspace." article_number: '013112' article_processing_charge: No article_type: original author: - first_name: Balachandra full_name: Suri, Balachandra id: 47A5E706-F248-11E8-B48F-1D18A9856A87 last_name: Suri - first_name: Ravi Kumar full_name: Pallantla, Ravi Kumar last_name: Pallantla - first_name: Michael F. full_name: Schatz, Michael F. last_name: Schatz - first_name: Roman O. full_name: Grigoriev, Roman O. last_name: Grigoriev citation: ama: Suri B, Pallantla RK, Schatz MF, Grigoriev RO. Heteroclinic and homoclinic connections in a Kolmogorov-like flow. Physical Review E. 2019;100(1). doi:10.1103/physreve.100.013112 apa: Suri, B., Pallantla, R. K., Schatz, M. F., & Grigoriev, R. O. (2019). Heteroclinic and homoclinic connections in a Kolmogorov-like flow. Physical Review E. American Physical Society. https://doi.org/10.1103/physreve.100.013112 chicago: Suri, Balachandra, Ravi Kumar Pallantla, Michael F. Schatz, and Roman O. Grigoriev. “Heteroclinic and Homoclinic Connections in a Kolmogorov-like Flow.” Physical Review E. American Physical Society, 2019. https://doi.org/10.1103/physreve.100.013112. ieee: B. Suri, R. K. Pallantla, M. F. Schatz, and R. O. Grigoriev, “Heteroclinic and homoclinic connections in a Kolmogorov-like flow,” Physical Review E, vol. 100, no. 1. American Physical Society, 2019. ista: Suri B, Pallantla RK, Schatz MF, Grigoriev RO. 2019. Heteroclinic and homoclinic connections in a Kolmogorov-like flow. Physical Review E. 100(1), 013112. mla: Suri, Balachandra, et al. “Heteroclinic and Homoclinic Connections in a Kolmogorov-like Flow.” Physical Review E, vol. 100, no. 1, 013112, American Physical Society, 2019, doi:10.1103/physreve.100.013112. short: B. Suri, R.K. Pallantla, M.F. Schatz, R.O. Grigoriev, Physical Review E 100 (2019). date_created: 2019-08-09T09:40:41Z date_published: 2019-07-25T00:00:00Z date_updated: 2024-02-28T13:13:00Z day: '25' ddc: - '532' department: - _id: BjHo doi: 10.1103/physreve.100.013112 ec_funded: 1 external_id: arxiv: - '1907.05860' isi: - '000477911800012' intvolume: ' 100' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.05860 month: '07' oa: 1 oa_version: Preprint project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Physical Review E publication_identifier: eissn: - 2470-0053 issn: - 2470-0045 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Heteroclinic and homoclinic connections in a Kolmogorov-like flow type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 100 year: '2019' ... --- _id: '7015' abstract: - lang: eng text: We modify the "floating crystal" trial state for the classical homogeneous electron gas (also known as jellium), in order to suppress the boundary charge fluctuations that are known to lead to a macroscopic increase of the energy. The argument is to melt a thin layer of the crystal close to the boundary and consequently replace it by an incompressible fluid. With the aid of this trial state we show that three different definitions of the ground-state energy of jellium coincide. In the first point of view the electrons are placed in a neutralizing uniform background. In the second definition there is no background but the electrons are submitted to the constraint that their density is constant, as is appropriate in density functional theory. Finally, in the third system each electron interacts with a periodic image of itself; that is, periodic boundary conditions are imposed on the interaction potential. article_number: '035127' article_processing_charge: No article_type: original author: - first_name: Mathieu full_name: Lewin, Mathieu last_name: Lewin - first_name: Elliott H. full_name: Lieb, Elliott H. last_name: Lieb - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 citation: ama: Lewin M, Lieb EH, Seiringer R. Floating Wigner crystal with no boundary charge fluctuations. Physical Review B. 2019;100(3). doi:10.1103/physrevb.100.035127 apa: Lewin, M., Lieb, E. H., & Seiringer, R. (2019). Floating Wigner crystal with no boundary charge fluctuations. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.100.035127 chicago: Lewin, Mathieu, Elliott H. Lieb, and Robert Seiringer. “Floating Wigner Crystal with No Boundary Charge Fluctuations.” Physical Review B. American Physical Society, 2019. https://doi.org/10.1103/physrevb.100.035127. ieee: M. Lewin, E. H. Lieb, and R. Seiringer, “Floating Wigner crystal with no boundary charge fluctuations,” Physical Review B, vol. 100, no. 3. American Physical Society, 2019. ista: Lewin M, Lieb EH, Seiringer R. 2019. Floating Wigner crystal with no boundary charge fluctuations. Physical Review B. 100(3), 035127. mla: Lewin, Mathieu, et al. “Floating Wigner Crystal with No Boundary Charge Fluctuations.” Physical Review B, vol. 100, no. 3, 035127, American Physical Society, 2019, doi:10.1103/physrevb.100.035127. short: M. Lewin, E.H. Lieb, R. Seiringer, Physical Review B 100 (2019). date_created: 2019-11-13T08:41:48Z date_published: 2019-07-25T00:00:00Z date_updated: 2024-02-28T13:13:23Z day: '25' department: - _id: RoSe doi: 10.1103/physrevb.100.035127 ec_funded: 1 external_id: arxiv: - '1905.09138' isi: - '000477888200001' intvolume: ' 100' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1905.09138 month: '07' oa: 1 oa_version: Preprint project: - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Floating Wigner crystal with no boundary charge fluctuations type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 100 year: '2019' ...