[{"external_id":{"arxiv":["2409.09835"]},"file":[{"file_name":"2026_PhysicalReviewApplied_Leonard.pdf","file_size":2750867,"date_created":"2026-07-16T09:39:37Z","success":1,"file_id":"22350","content_type":"application/pdf","date_updated":"2026-07-16T09:39:37Z","creator":"dernst","access_level":"open_access","checksum":"d872ca35d9d2c7821642fda520be2c15","relation":"main_file"}],"intvolume":" 26","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"dataavailabilitystatement":"The data that support the findings of this article are openly available under 10.5281/zenodo\r\n.19615009. ","arxiv":1,"day":"10","acknowledgement":"We gratefully acknowledge feedback on the preprint\r\nfrom Charles Marcus, Vadim Khrapai, Joel Moore,\r\nAndrew Green, Shivaji Sondhi, Rufus Boyack, and\r\nLuca Delacr´etaz. This work was primarily supported by\r\nthe NOMIS foundation. This work was partially supported\r\nby the University of Chicago Materials Research Science\r\nand Engineering Center, which is funded by the National\r\nScience Foundation under Award No. DMR-2011854, and\r\nby the SFB Q-M&S funded by the Austrian Science Fund\r\n(FWF). We acknowledge technical support from the\r\nNanofabrication Facility and the MIBA machine shop at\r\nIST Austria.","year":"2026","citation":{"ista":"Léonard KW, Bubis A, Mikalsen M, Schiela WF, Elfeky BH, Strickland WM, Phan DT, Shabani J, Higginbotham AP. 2026. Microwave radiometry of a quantum-critical hybrid Josephson array. Physical Review Applied. 26, 014031.","ama":"Léonard KW, Bubis A, Mikalsen M, et al. Microwave radiometry of a quantum-critical hybrid Josephson array. Physical Review Applied. 2026;26. doi:10.1103/75bl-mm3b","ieee":"K. W. Léonard et al., “Microwave radiometry of a quantum-critical hybrid Josephson array,” Physical Review Applied, vol. 26. American Physical Society, 2026.","apa":"Léonard, K. W., Bubis, A., Mikalsen, M., Schiela, W. F., Elfeky, B. H., Strickland, W. M., … Higginbotham, A. P. (2026). Microwave radiometry of a quantum-critical hybrid Josephson array. Physical Review Applied. American Physical Society. https://doi.org/10.1103/75bl-mm3b","chicago":"Léonard, Kristen Williams, Anton Bubis, Melissa Mikalsen, William F. Schiela, Bassel H. Elfeky, William M. Strickland, Duc T Phan, Javad Shabani, and Andrew P Higginbotham. “Microwave Radiometry of a Quantum-Critical Hybrid Josephson Array.” Physical Review Applied. American Physical Society, 2026. https://doi.org/10.1103/75bl-mm3b.","short":"K.W. Léonard, A. Bubis, M. Mikalsen, W.F. Schiela, B.H. Elfeky, W.M. Strickland, D.T. Phan, J. Shabani, A.P. Higginbotham, Physical Review Applied 26 (2026).","mla":"Léonard, Kristen Williams, et al. “Microwave Radiometry of a Quantum-Critical Hybrid Josephson Array.” Physical Review Applied, vol. 26, 014031, American Physical Society, 2026, doi:10.1103/75bl-mm3b."},"publisher":"American Physical Society","_id":"22323","status":"public","researchdata_availability":"yes","oa_version":"Published Version","OA_place":"publisher","ddc":["530"],"date_published":"2026-07-10T00:00:00Z","has_accepted_license":"1","PlanS_conform":"1","OA_type":"hybrid","fulldoi":"https://doi.org/10.1103/75bl-mm3b","article_type":"original","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file_date_updated":"2026-07-16T09:39:37Z","abstract":[{"lang":"eng","text":"Arrays of Josephson junctions can be tuned through anomalous metallic, quantum-critical, and insulating regimes. We introduce an alternative experimental probe, capturing microwave radiation across all three regimes, using a two-dimensional array of superconductor-semiconductor hybrid Josephson junctions as a model system. Our approach allows calibration of the sample’s circuit parameters and provides isolation from measurement back-action effects. We measure the radiation temperature of the anomalous metal and find that it is hotter than both the quantum-critical and insulating regimes. We further show that the anomalous metallic regime is more susceptible to additional heating than other regimes, explaining its emergence in otherwise thermalized systems. Turning to the quantum-critical regime, we discover nonlinear scaling of radiative noise with applied bias, consistent with theoretical predictions of universal nonequilibrium behavior at quantum-critical points."}],"date_updated":"2026-07-21T12:01:49Z","project":[{"grant_number":"F8606","_id":"34a66131-11ca-11ed-8bc3-a31681c6b03e","name":"Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors"}],"quality_controlled":"1","date_created":"2026-07-14T05:35:24Z","supplementarymaterial":"no","article_processing_charge":"Yes (via OA deal)","month":"07","volume":26,"language":[{"iso":"eng"}],"department":[{"_id":"GradSch"},{"_id":"AnHi"},{"_id":"GeKa"}],"publication_status":"published","article_number":"014031","publication_identifier":{"issn":["2331-7019"]},"title":"Microwave radiometry of a quantum-critical hybrid Josephson array","oa":1,"doi":"10.1103/75bl-mm3b","type":"journal_article","publication":"Physical Review Applied","author":[{"full_name":"Galvin, Kristen W","last_name":"Galvin","id":"41737c86-5355-11ee-ae5a-d2146bfd0877","first_name":"Kristen W"},{"full_name":"Bubis, Anton","last_name":"Bubis","id":"1f6212b5-f795-11ec-9c0c-de4780302890","first_name":"Anton"},{"full_name":"Mikalsen, Melissa","last_name":"Mikalsen","first_name":"Melissa"},{"first_name":"William F.","full_name":"Schiela, William F.","last_name":"Schiela"},{"first_name":"Bassel H.","full_name":"Elfeky, Bassel H.","last_name":"Elfeky"},{"last_name":"Strickland","full_name":"Strickland, William M.","first_name":"William M."},{"last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","full_name":"Phan, Duc T","first_name":"Duc T"},{"first_name":"Javad","full_name":"Shabani, Javad","last_name":"Shabani"},{"orcid":"0000-0003-2607-2363","first_name":"Andrew P","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P"}],"corr_author":"1","scopus_import":"1"},{"article_number":"194501","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"oa":1,"title":"Plasmon decay and nonequilibrium steady states in Josephson junction chains","doi":"10.1103/cw3m-thsw","type":"journal_article","publication":"Physical Review B","author":[{"id":"539e1e1a-e604-11ee-a1df-f02b018e5c8c","last_name":"Vigliotti","full_name":"Vigliotti, Lucia","first_name":"Lucia"},{"full_name":"Higginbotham, Andrew P","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2607-2363","first_name":"Andrew P"},{"last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","full_name":"Serbyn, Maksym","orcid":"0000-0002-2399-5827","first_name":"Maksym"}],"corr_author":"1","scopus_import":"1","project":[{"grant_number":"F8609","_id":"34a7f947-11ca-11ed-8bc3-c5dc2bbaae25","name":"Center for Correlated Quantum Materials and Solid State Quantum Systems: Probing topology in circuits and quantum materials"}],"quality_controlled":"1","date_created":"2026-10-02T08:33:31Z","supplementarymaterial":"yes","article_processing_charge":"Yes (via OA deal)","month":"10","volume":114,"language":[{"iso":"eng"}],"department":[{"_id":"MaSe"},{"_id":"AnHi"}],"publication_status":"published","OA_place":"publisher","ddc":["530"],"date_published":"2026-10-01T00:00:00Z","has_accepted_license":"1","OA_type":"hybrid","PlanS_conform":"1","fulldoi":"https://doi.org/10.1103/cw3m-thsw","article_type":"original","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"lang":"eng","text":"Josephson junction (JJ) chains combine the coherence of superconductivity with the controllability of microwave-frequency circuits, making them a powerful platform for circuit quantum electrodynamics. In this work, we consider a long JJ chain that effectively realizes a multimode cavity with nonlinear dispersion and additional multimode interactions. Individual modes appearing due to the finite size of the chain can be experimentally probed via microwave spectroscopy, both in equilibrium and in driven far-from-equilibrium settings. We study the role of multimode interactions in degrading internal coherence—observable as excess linewidth—in both equilibrium and driven regimes. Focusing on two-into-two mode scattering as the leading relaxation process, we classify the relevant scattering processes and derive their expected temperature- and frequency-scaling under equilibrium conditions. For experimentally relevant parameters, we show that the equilibrium decay rate is dominated by nonresonant processes, however, weakly driving a particular set of modes out of equilibrium enhances resonant scattering, leading to observable signatures in the distribution function and linewidth. Finally, in the strong nonequilibrium regime, we report a crossover to a qualitatively different nonequilibrium steady state."}],"file_date_updated":"2026-10-07T09:39:01Z","date_updated":"2026-10-07T09:42:41Z","external_id":{"arxiv":["2603.06371"]},"issue":"19","file":[{"relation":"main_file","access_level":"open_access","checksum":"95db327e1005564d09334763789ad7ae","creator":"dernst","date_updated":"2026-10-07T09:39:01Z","content_type":"application/pdf","file_id":"23069","success":1,"date_created":"2026-10-07T09:39:01Z","file_size":2531016,"file_name":"2026_PhysicalReviewB_Vigliotti.pdf"}],"intvolume":" 114","dataavailabilitystatement":"The data and the source code that support the findings of this paper are openly available at: https://doi.org/10.5281/zenodo.19456426.","das_tickbox":"1","day":"01","arxiv":1,"year":"2026","acknowledgement":"We acknowledge useful discussions with Anton Bubis, Vladimir Manucharyan, Alexander Mirlin, and Thomas Scaffidi. We are grateful to Eli Levenson-Falk and Alexander Mirlin for their feedback on the manuscript. This research was supported in part by Grant NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP), and by the Austrian Science Fund (FWF) SFB F86.","citation":{"short":"L. Vigliotti, A.P. Higginbotham, M. Serbyn, Physical Review B 114 (2026).","mla":"Vigliotti, Lucia, et al. “Plasmon Decay and Nonequilibrium Steady States in Josephson Junction Chains.” Physical Review B, vol. 114, no. 19, 194501, American Physical Society, 2026, doi:10.1103/cw3m-thsw.","chicago":"Vigliotti, Lucia, Andrew P Higginbotham, and Maksym Serbyn. “Plasmon Decay and Nonequilibrium Steady States in Josephson Junction Chains.” Physical Review B. American Physical Society, 2026. https://doi.org/10.1103/cw3m-thsw.","ieee":"L. Vigliotti, A. P. Higginbotham, and M. Serbyn, “Plasmon decay and nonequilibrium steady states in Josephson junction chains,” Physical Review B, vol. 114, no. 19. American Physical Society, 2026.","apa":"Vigliotti, L., Higginbotham, A. P., & Serbyn, M. (2026). Plasmon decay and nonequilibrium steady states in Josephson junction chains. Physical Review B. American Physical Society. https://doi.org/10.1103/cw3m-thsw","ama":"Vigliotti L, Higginbotham AP, Serbyn M. Plasmon decay and nonequilibrium steady states in Josephson junction chains. Physical Review B. 2026;114(19). doi:10.1103/cw3m-thsw","ista":"Vigliotti L, Higginbotham AP, Serbyn M. 2026. Plasmon decay and nonequilibrium steady states in Josephson junction chains. Physical Review B. 114(19), 194501."},"publisher":"American Physical Society","_id":"23029","status":"public","researchdata_availability":"yes","oa_version":"Published Version"},{"quality_controlled":"1","date_created":"2026-02-22T20:47:38Z","article_processing_charge":"Yes","month":"02","volume":12,"department":[{"_id":"MaSe"},{"_id":"AnHi"},{"_id":"GeKa"}],"language":[{"iso":"eng"}],"publication_status":"published","article_number":"eady7222","doi":"10.1126/sciadv.ady7222","type":"journal_article","publication_identifier":{"eissn":["2375-2548"]},"oa":1,"title":"Non-equilibrium plasmon liquid in a Josephson junction chain","author":[{"id":"1f6212b5-f795-11ec-9c0c-de4780302890","last_name":"Bubis","full_name":"Bubis, Anton","first_name":"Anton"},{"first_name":"Lucia","id":"539e1e1a-e604-11ee-a1df-f02b018e5c8c","last_name":"Vigliotti","full_name":"Vigliotti, Lucia"},{"first_name":"Maksym","orcid":"0000-0002-2399-5827","full_name":"Serbyn, Maksym","last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","full_name":"Higginbotham, Andrew P","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham"}],"publication":"Science Advances","corr_author":"1","file":[{"creator":"dernst","date_updated":"2026-02-24T07:23:32Z","content_type":"application/pdf","access_level":"open_access","checksum":"8402f322f8f0e858b1d9aac57e306e31","relation":"main_file","date_created":"2026-02-24T07:23:32Z","file_size":2775975,"file_name":"2026_ScienceAdv_Bubis.pdf","success":1,"file_id":"21353"}],"intvolume":" 12","external_id":{"arxiv":["2504.09721"]},"issue":"7","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"year":"2026","citation":{"short":"A. Bubis, L. Vigliotti, M. Serbyn, A.P. Higginbotham, Science Advances 12 (2026).","mla":"Bubis, Anton, et al. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances, vol. 12, no. 7, eady7222, AAAS, 2026, doi:10.1126/sciadv.ady7222.","chicago":"Bubis, Anton, Lucia Vigliotti, Maksym Serbyn, and Andrew P Higginbotham. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances. AAAS, 2026. https://doi.org/10.1126/sciadv.ady7222.","ieee":"A. Bubis, L. Vigliotti, M. Serbyn, and A. P. Higginbotham, “Non-equilibrium plasmon liquid in a Josephson junction chain,” Science Advances, vol. 12, no. 7. AAAS, 2026.","apa":"Bubis, A., Vigliotti, L., Serbyn, M., & Higginbotham, A. P. (2026). Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. AAAS. https://doi.org/10.1126/sciadv.ady7222","ama":"Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 2026;12(7). doi:10.1126/sciadv.ady7222","ista":"Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. 2026. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 12(7), eady7222."},"acknowledgement":"We thank V. Vitelli, M. Fruchart, and A. Burshstein for helpful input. We acknowledge technical support from the Nanofabrication Facility and the MIBA machine shop at IST Austria. This research was supported in part by grant NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP), by the Austrian Science Fund (FWF) SFB F86, and by the NOMIS foundation.","publisher":"AAAS","day":"13","arxiv":1,"oa_version":"Published Version","_id":"21340","status":"public","OA_place":"publisher","DOAJ_listed":"1","fulldoi":"https://doi.org/10.1126/sciadv.ady7222","article_type":"original","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"ddc":["530"],"OA_type":"gold","has_accepted_license":"1","date_published":"2026-02-13T00:00:00Z","PlanS_conform":"1","file_date_updated":"2026-02-24T07:23:32Z","abstract":[{"text":"Equilibrium quantum systems are often described by a gas of weakly interacting normal modes. Bringing such systems far from equilibrium, however, can drastically enhance mode-to-mode interactions. Understanding the resulting liquid is a fundamental question for quantum statistical mechanics and a practical question for engineering driven quantum devices. To tackle this question, we probe the non-equilibrium kinetics of one-dimensional plasmons in a long chain of Josephson junctions. We introduce multimode spectroscopy to controllably study the departure from equilibrium, witnessing the evolution from pairwise coupling between plasma modes at weak driving to dramatic, high-order, cascaded couplings at strong driving. Scaling to many-mode drives, we stimulate interactions between hundreds of modes, resulting in near-continuum internal dynamics. Imaging the resulting non-equilibrium plasmon populations, we then resolve the nonlocal redistribution of energy in the response to a weak perturbation—an explicit verification of the emergence of a strongly interacting, non-equilibrium liquid of plasmons.","lang":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2026-10-20T08:10:46Z"},{"OA_type":"hybrid","date_published":"2025-07-17T00:00:00Z","has_accepted_license":"1","PlanS_conform":"1","ddc":["530"],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"article_type":"original","fulldoi":"https://doi.org/10.1103/qvls-7s3q","OA_place":"publisher","date_updated":"2026-09-24T10:13:38Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"lang":"eng","text":"We report relaxation oscillations in a one-dimensional array of Josephson junctions, wherein the array dynamically switches between low-current and high-current states. The oscillations are current-voltage dual to those ordinarily observed in single junctions. The current-voltage dual circuit quantitatively accounts for temporal dynamics of the array, including the dependence on biasing conditions. Injection locking of the oscillations results in well-developed current plateaux. A thermal model explains the self-consistent reduction of the superconducting gap due to overheating of the array in the high-current state. Our work suggests that overheating determines the switching from the high-current state to the low-current state."}],"file_date_updated":"2025-09-10T07:29:06Z","ec_funded":1,"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"external_id":{"arxiv":["2408.07829 "],"isi":["001537333100001"]},"intvolume":" 24","file":[{"file_size":1370466,"date_created":"2025-09-10T07:29:06Z","file_name":"2025_PhysReviewAppl_Mukhopadhyay.pdf","file_id":"20335","success":1,"creator":"dernst","content_type":"application/pdf","date_updated":"2025-09-10T07:29:06Z","relation":"main_file","access_level":"open_access","checksum":"6cc3c9beeb7c0a88ee0a072c9a32b78b"}],"status":"public","_id":"20324","oa_version":"Published Version","isi":1,"arxiv":1,"day":"17","publisher":"American Physical Society","citation":{"mla":"Mukhopadhyay, Soham, et al. “Dual Relaxation Oscillations in a Josephson-Junction Array.” Physical Review Applied, vol. 24, 014035, American Physical Society, 2025, doi:10.1103/qvls-7s3q.","short":"S. Mukhopadhyay, D.A. Lancheros Naranjo, J.L. Senior, A.P. Higginbotham, Physical Review Applied 24 (2025).","chicago":"Mukhopadhyay, Soham, Diego A Lancheros Naranjo, Jorden L Senior, and Andrew P Higginbotham. “Dual Relaxation Oscillations in a Josephson-Junction Array.” Physical Review Applied. American Physical Society, 2025. https://doi.org/10.1103/qvls-7s3q.","ieee":"S. Mukhopadhyay, D. A. Lancheros Naranjo, J. L. Senior, and A. P. Higginbotham, “Dual relaxation oscillations in a Josephson-junction array,” Physical Review Applied, vol. 24. American Physical Society, 2025.","apa":"Mukhopadhyay, S., Lancheros Naranjo, D. A., Senior, J. L., & Higginbotham, A. P. (2025). Dual relaxation oscillations in a Josephson-junction array. Physical Review Applied. American Physical Society. https://doi.org/10.1103/qvls-7s3q","ama":"Mukhopadhyay S, Lancheros Naranjo DA, Senior JL, Higginbotham AP. Dual relaxation oscillations in a Josephson-junction array. Physical Review Applied. 2025;24. doi:10.1103/qvls-7s3q","ista":"Mukhopadhyay S, Lancheros Naranjo DA, Senior JL, Higginbotham AP. 2025. Dual relaxation oscillations in a Josephson-junction array. Physical Review Applied. 24, 014035."},"year":"2025","acknowledgement":"We gratefully acknowledge support from the Miba Machine Shop and the Nanofabrictation Facility at IST Austria. This work was supported by the Austrian FWF under Grant No. P33692-N (S.M., J.S., and A.P.H.), the European Union’s Horizon 2020 research and innovation program under Marie Skłodowska-Curie Grant Agreement No. 754411 (J.S.), and a NOMIS Foundation research grant (A.P.H.).","oa":1,"title":"Dual relaxation oscillations in a Josephson-junction array","publication_identifier":{"issn":["2331-7019"]},"type":"journal_article","doi":"10.1103/qvls-7s3q","article_number":"014035","corr_author":"1","scopus_import":"1","publication":"Physical Review Applied","author":[{"full_name":"Mukhopadhyay, Soham","id":"FDE60288-A89D-11E9-947F-1AF6E5697425","last_name":"Mukhopadhyay","first_name":"Soham","orcid":"0000-0001-5263-5559"},{"first_name":"Diego A","full_name":"Lancheros Naranjo, Diego A","id":"6c55e976-15b2-11ec-abd3-d790e8937fde","last_name":"Lancheros Naranjo"},{"orcid":"0000-0002-0672-9295","first_name":"Jorden L","full_name":"Senior, Jorden L","last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","full_name":"Higginbotham, Andrew P","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87"}],"article_processing_charge":"Yes (via OA deal)","date_created":"2025-09-10T05:41:30Z","project":[{"_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","name":"Cavity electromechanics across a quantum phase transition","grant_number":"P33692"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"}],"related_material":{"record":[{"status":"public","relation":"earlier_version","id":"18057"}]},"quality_controlled":"1","publication_status":"published","language":[{"iso":"eng"}],"department":[{"_id":"GradSch"},{"_id":"AnHi"}],"volume":24,"month":"07"},{"oa":1,"title":"Room temperature, cavity-free capacitive strong coupling to mechanical motion","publication_identifier":{"eissn":["1530-6992"],"issn":["1530-6984"]},"type":"journal_article","doi":"10.1021/acs.nanolett.4c05796","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2407.15314"}],"corr_author":"1","scopus_import":"1","publication":"Nano Letters","author":[{"full_name":"Puglia, Denise","last_name":"Puglia","id":"4D495994-AE37-11E9-AC72-31CAE5697425","orcid":"0000-0003-1144-2763","first_name":"Denise"},{"first_name":"Rachel H","last_name":"Odessey","id":"9a7a5123-8972-11ed-ae7b-dd1f2af457bd","full_name":"Odessey, Rachel H"},{"full_name":"Burns, Peter","last_name":"Burns","first_name":"Peter"},{"last_name":"Luhmann","full_name":"Luhmann, Niklas","first_name":"Niklas"},{"first_name":"Silvan","full_name":"Schmid, Silvan","last_name":"Schmid"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P"}],"article_processing_charge":"No","date_created":"2025-02-16T23:02:34Z","project":[{"name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","grant_number":"P33692"},{"grant_number":"26088","name":"Surface Charge and Tunneling Multi-Mode Imaging","_id":"62843413-2b32-11ec-9570-c4ec6eabfae7"}],"related_material":{"record":[{"relation":"earlier_version","id":"18143","status":"public"}]},"quality_controlled":"1","page":"2749-2755","publication_status":"published","department":[{"_id":"AnHi"}],"language":[{"iso":"eng"}],"volume":25,"month":"02","OA_type":"green","date_published":"2025-02-06T00:00:00Z","fulldoi":"https://doi.org/10.1021/acs.nanolett.4c05796","article_type":"original","OA_place":"repository","date_updated":"2026-10-21T14:08:09Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","abstract":[{"lang":"eng","text":"The back-action damping of mechanical motion by electromagnetic radiation is typically overwhelmed by internal loss channels unless demanding experimental ingredients such as superconducting resonators, high-quality optical cavities, or large magnetic fields are employed. Here we demonstrate the first room temperature, cavity-free, all-electric device where back-action damping exceeds internal loss, enabled by a mechanically compliant parallel-plate capacitor with a nanoscale plate separation and an aspect ratio exceeding 1,000. The device has 4 orders of magnitude lower insertion loss than a comparable commercial quartz crystal and achieves a position imprecision rivaling optical interferometers. With the help of a back-action isolation scheme, we observe radiative cooling of mechanical motion by a remote cryogenic load. This work provides a technologically accessible route to high-precision sensing, transduction, and signal processing."}],"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"issue":"7","external_id":{"arxiv":["2407.15314"],"isi":["001415246000001"]},"intvolume":" 25","_id":"19026","status":"public","oa_version":"Preprint","isi":1,"day":"06","arxiv":1,"publisher":"American Chemical Society","citation":{"apa":"Puglia, D., Odessey, R. H., Burns, P., Luhmann, N., Schmid, S., & Higginbotham, A. P. (2025). Room temperature, cavity-free capacitive strong coupling to mechanical motion. Nano Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.4c05796","ieee":"D. Puglia, R. H. Odessey, P. Burns, N. Luhmann, S. Schmid, and A. P. Higginbotham, “Room temperature, cavity-free capacitive strong coupling to mechanical motion,” Nano Letters, vol. 25, no. 7. American Chemical Society, pp. 2749–2755, 2025.","ama":"Puglia D, Odessey RH, Burns P, Luhmann N, Schmid S, Higginbotham AP. Room temperature, cavity-free capacitive strong coupling to mechanical motion. Nano Letters. 2025;25(7):2749-2755. doi:10.1021/acs.nanolett.4c05796","ista":"Puglia D, Odessey RH, Burns P, Luhmann N, Schmid S, Higginbotham AP. 2025. Room temperature, cavity-free capacitive strong coupling to mechanical motion. Nano Letters. 25(7), 2749–2755.","short":"D. Puglia, R.H. Odessey, P. Burns, N. Luhmann, S. Schmid, A.P. Higginbotham, Nano Letters 25 (2025) 2749–2755.","mla":"Puglia, Denise, et al. “Room Temperature, Cavity-Free Capacitive Strong Coupling to Mechanical Motion.” Nano Letters, vol. 25, no. 7, American Chemical Society, 2025, pp. 2749–55, doi:10.1021/acs.nanolett.4c05796.","chicago":"Puglia, Denise, Rachel H Odessey, Peter Burns, Niklas Luhmann, Silvan Schmid, and Andrew P Higginbotham. “Room Temperature, Cavity-Free Capacitive Strong Coupling to Mechanical Motion.” Nano Letters. American Chemical Society, 2025. https://doi.org/10.1021/acs.nanolett.4c05796."},"acknowledgement":"We thank Carissa Kumar and Vibha Padmanabhan for assistance in comparing performance with devices across the literature. We thank Andrew Cleland for helpful comments on this work. We are grateful for support from the Miba Machine Shop and Nanofabrication facility at IST Austria. This work was supported by the Austrian FWF grant P33692–N and includes a recipient of a DOC Fellowship of the Austrian Academy of Sciences (DOC – No. 26088) at the Institute of Science and Technology, Austria.","year":"2025"},{"article_number":"071101","type":"journal_article","doi":"10.1063/5.0202851","oa":1,"title":"Effect of ion irradiation on superconducting thin films","publication_identifier":{"eissn":["2166-532X"]},"author":[{"full_name":"Kohopää, Katja","last_name":"Kohopää","first_name":"Katja"},{"last_name":"Ronzani","full_name":"Ronzani, Alberto","first_name":"Alberto"},{"first_name":"Robab Najafi","last_name":"Jabdaraghi","full_name":"Jabdaraghi, Robab Najafi"},{"first_name":"Arijit","full_name":"Bera, Arijit","last_name":"Bera"},{"first_name":"Mário","full_name":"Ribeiro, Mário","last_name":"Ribeiro"},{"first_name":"Dibyendu","last_name":"Hazra","full_name":"Hazra, Dibyendu"},{"full_name":"Senior, Jorden L","id":"5479D234-2D30-11EA-89CC-40953DDC885E","last_name":"Senior","orcid":"0000-0002-0672-9295","first_name":"Jorden L"},{"full_name":"Prunnila, Mika","last_name":"Prunnila","first_name":"Mika"},{"first_name":"Joonas","full_name":"Govenius, Joonas","last_name":"Govenius"},{"last_name":"Lehtinen","full_name":"Lehtinen, Janne S.","first_name":"Janne S."},{"last_name":"Kemppinen","full_name":"Kemppinen, Antti","first_name":"Antti"}],"publication":"APL Materials","scopus_import":"1","quality_controlled":"1","project":[{"call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"}],"article_processing_charge":"Yes","date_created":"2024-07-14T22:01:11Z","month":"07","publication_status":"published","language":[{"iso":"eng"}],"department":[{"_id":"AnHi"}],"volume":12,"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"fulldoi":"https://doi.org/10.1063/5.0202851","article_type":"original","date_published":"2024-07-01T00:00:00Z","has_accepted_license":"1","ddc":["530"],"ec_funded":1,"file_date_updated":"2024-07-16T06:30:30Z","abstract":[{"text":"We demonstrate ion irradiation by argon or gallium as a wafer-scale post-processing method to increase disorder in superconducting thin films. We study several widely used superconductors, both single-elements and compounds. We show that ion irradiation increases normal-state resistivity in all our films, which is expected to enable tuning their superconducting properties, for example, toward a higher kinetic inductance. We observe an increase in superconducting transition temperature for Al and MoSi and a decrease for Nb, NbN, and TiN. In MoSi, ion irradiation also improves the mixing of the two materials. We demonstrate the fabrication of an amorphous and homogeneous film of MoSi with uniform thickness, which is promising, for example, for superconducting nanowire single-photon detectors.","lang":"eng"}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2025-09-08T08:10:58Z","intvolume":" 12","file":[{"success":1,"file_id":"17244","date_created":"2024-07-16T06:30:30Z","file_size":9408198,"file_name":"2024_APLMaterial_Kohopaa.pdf","checksum":"32a5cdf0ea9c937f806b6039f3219917","access_level":"open_access","relation":"main_file","creator":"dernst","content_type":"application/pdf","date_updated":"2024-07-16T06:30:30Z"}],"issue":"7","external_id":{"isi":["001260942200003"]},"acknowledged_ssus":[{"_id":"EM-Fac"}],"publisher":"AIP Publishing","acknowledgement":"We thank J. A. Sauls for useful discussions. For funding of our research project, we acknowledge the European Union’s Horizon 2020 Research and Innovation Program under Grant Agreement Nos. 862660/Quantum e-leaps, 899558/aCryComm, 766853/EFINED, and ECSEL programme 101007322/MatQu. This project has also received funding from Business Finland through Quantum Technologies Industrial (QuTI) Project No. 128291 and from Research Council of Finland through Grant Nos. 310909, 350220 and Finnish Quantum Flagship project 359284. This work was performed as part of the Research Council of Finland Centres of Excellence program (Project Nos. 336817, 336819, 352934, and 352935). We also acknowledge funding from an internal strategic innovation project of VTT related to the development of quantum computing technologies. This research was supported by the Scientific Service Units of IST Austria through resources provided by Electron Microscopy Facility. J. Senior acknowledges funding from the European Union’s Horizon 2020 Research and Innovation Program under the Marie Skłodowska-Curie Grant Agreement No. 754411. A. Ronzani acknowledges funding from Research Council of Finland (Research Fellowship Project No. 356542).","citation":{"chicago":"Kohopää, Katja, Alberto Ronzani, Robab Najafi Jabdaraghi, Arijit Bera, Mário Ribeiro, Dibyendu Hazra, Jorden L Senior, et al. “Effect of Ion Irradiation on Superconducting Thin Films.” APL Materials. AIP Publishing, 2024. https://doi.org/10.1063/5.0202851.","mla":"Kohopää, Katja, et al. “Effect of Ion Irradiation on Superconducting Thin Films.” APL Materials, vol. 12, no. 7, 071101, AIP Publishing, 2024, doi:10.1063/5.0202851.","short":"K. Kohopää, A. Ronzani, R.N. Jabdaraghi, A. Bera, M. Ribeiro, D. Hazra, J.L. Senior, M. Prunnila, J. Govenius, J.S. Lehtinen, A. Kemppinen, APL Materials 12 (2024).","ista":"Kohopää K, Ronzani A, Jabdaraghi RN, Bera A, Ribeiro M, Hazra D, Senior JL, Prunnila M, Govenius J, Lehtinen JS, Kemppinen A. 2024. Effect of ion irradiation on superconducting thin films. APL Materials. 12(7), 071101.","ama":"Kohopää K, Ronzani A, Jabdaraghi RN, et al. Effect of ion irradiation on superconducting thin films. APL Materials. 2024;12(7). doi:10.1063/5.0202851","apa":"Kohopää, K., Ronzani, A., Jabdaraghi, R. N., Bera, A., Ribeiro, M., Hazra, D., … Kemppinen, A. (2024). Effect of ion irradiation on superconducting thin films. APL Materials. AIP Publishing. https://doi.org/10.1063/5.0202851","ieee":"K. Kohopää et al., “Effect of ion irradiation on superconducting thin films,” APL Materials, vol. 12, no. 7. AIP Publishing, 2024."},"year":"2024","isi":1,"day":"01","oa_version":"Published Version","status":"public","_id":"17235"},{"date_updated":"2026-06-03T07:16:01Z","abstract":[{"text":"One of the most promising approaches towards large-scale quantum computation uses devices based on many Josephson junctions. Yet, even today, open questions regarding the single junction remain unsolved, such as the detailed understanding of the quantum phase transitions, the coupling of the Josephson junction to the environment or how to improve the coherence of a superconducting qubit. Here we design and build an engineered on-chip reservoir connected to a Josephson junction that acts as an efficient bolometer for detecting the Josephson radiation under non-equilibrium, that is, biased conditions. The bolometer converts the a.c. Josephson current at microwave frequencies up to about 100 GHz into a temperature rise measured by d.c. thermometry. A circuit model based on realistic parameter values captures both the current–voltage characteristics and the measured power quantitatively. The present experiment demonstrates an efficient, wide-band, thermal detection scheme of microwave photons and provides a sensitive detector of Josephson dynamics beyond the standard conductance measurements.","lang":"eng"}],"file_date_updated":"2025-01-09T13:51:12Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","article_type":"original","fulldoi":"https://doi.org/10.1038/s41565-024-01770-7","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"ddc":["530"],"has_accepted_license":"1","OA_type":"hybrid","date_published":"2024-11-01T00:00:00Z","OA_place":"publisher","oa_version":"Published Version","_id":"17480","status":"public","year":"2024","acknowledgement":"We thank M. Möttönen, D. Subero, V. Vadimov, A. Alizadeh, C. Strunk, N. Roch, S. Kafanov, S. Kubatkin, A. Kerman and J. Peltonen for scientific discussions and Z.-Y. Chen for technical assistance. B.K. and J.P.P. acknowledge funding from the Research Council of Finland Centre of Excellence programme grant 336810 and grant 349601 (THEPOW), G.O.S. and A.L.Y. financial support from the Spanish Ministry of Science through grant TED2021-130292B-C43 funded by MCIN/AEI/10.13039/501100011033, ‘ERDF A way of making Europe’ and the EU through FET-Open project AndQC, A.P.H. support from the NOMIS Foundation, and C.M.M. support from the Danish National Research Foundation and a research grant (Project 43951) from VILLUM FONDEN. We thank the facilities and technical support of Otaniemi Research Infrastructure for Micro and Nanotechnologies (OtaNano). The funders had no role in study design, data collection and analysis, decision to publish or preparation of the paper.","citation":{"ama":"Karimi B, Steffensen GO, Higginbotham AP, Marcus CM, Levy Yeyati A, Pekola JP. Bolometric detection of Josephson radiation. Nature Nanotechnology. 2024;19:1613-1618. doi:10.1038/s41565-024-01770-7","ista":"Karimi B, Steffensen GO, Higginbotham AP, Marcus CM, Levy Yeyati A, Pekola JP. 2024. Bolometric detection of Josephson radiation. Nature Nanotechnology. 19, 1613–1618.","ieee":"B. Karimi, G. O. Steffensen, A. P. Higginbotham, C. M. Marcus, A. Levy Yeyati, and J. P. Pekola, “Bolometric detection of Josephson radiation,” Nature Nanotechnology, vol. 19. Springer Nature, pp. 1613–1618, 2024.","apa":"Karimi, B., Steffensen, G. O., Higginbotham, A. P., Marcus, C. M., Levy Yeyati, A., & Pekola, J. P. (2024). Bolometric detection of Josephson radiation. Nature Nanotechnology. Springer Nature. https://doi.org/10.1038/s41565-024-01770-7","chicago":"Karimi, Bayan, Gorm Ole Steffensen, Andrew P Higginbotham, Charles M. Marcus, Alfredo Levy Yeyati, and Jukka P. Pekola. “Bolometric Detection of Josephson Radiation.” Nature Nanotechnology. Springer Nature, 2024. https://doi.org/10.1038/s41565-024-01770-7.","short":"B. Karimi, G.O. Steffensen, A.P. Higginbotham, C.M. Marcus, A. Levy Yeyati, J.P. Pekola, Nature Nanotechnology 19 (2024) 1613–1618.","mla":"Karimi, Bayan, et al. “Bolometric Detection of Josephson Radiation.” Nature Nanotechnology, vol. 19, Springer Nature, 2024, pp. 1613–18, doi:10.1038/s41565-024-01770-7."},"publisher":"Springer Nature","arxiv":1,"day":"01","isi":1,"file":[{"date_created":"2025-01-09T13:51:12Z","file_size":3047567,"file_name":"2024_NatureNanotechnology_Karimi.pdf","file_id":"18818","success":1,"creator":"dernst","date_updated":"2025-01-09T13:51:12Z","content_type":"application/pdf","relation":"main_file","access_level":"open_access","checksum":"8b067ef217ddef63c539ecdfe705ab95"}],"intvolume":" 19","external_id":{"isi":["001296522000002"],"arxiv":["2402.09314"]},"scopus_import":"1","author":[{"full_name":"Karimi, Bayan","last_name":"Karimi","first_name":"Bayan"},{"full_name":"Steffensen, Gorm Ole","last_name":"Steffensen","first_name":"Gorm Ole"},{"last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P","orcid":"0000-0003-2607-2363","first_name":"Andrew P"},{"full_name":"Marcus, Charles M.","last_name":"Marcus","first_name":"Charles M."},{"full_name":"Levy Yeyati, Alfredo","last_name":"Levy Yeyati","first_name":"Alfredo"},{"first_name":"Jukka P.","full_name":"Pekola, Jukka P.","last_name":"Pekola"}],"publication":"Nature Nanotechnology","doi":"10.1038/s41565-024-01770-7","type":"journal_article","publication_identifier":{"issn":["1748-3387"],"eissn":["1748-3395"]},"title":"Bolometric detection of Josephson radiation","oa":1,"volume":19,"department":[{"_id":"AnHi"}],"language":[{"iso":"eng"}],"publication_status":"published","page":"1613-1618","month":"11","date_created":"2024-09-01T22:01:09Z","article_processing_charge":"No","quality_controlled":"1","project":[{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"}]},{"intvolume":" 16","file":[{"relation":"main_file","checksum":"f999204856417dcf5a736ac8df432b96","access_level":"open_access","content_type":"application/pdf","date_updated":"2024-05-07T12:58:47Z","creator":"dernst","file_id":"15369","success":1,"file_name":"2024_SciPostPhys_Babkin.pdf","file_size":2733685,"date_created":"2024-05-07T12:58:47Z"}],"issue":"5","external_id":{"isi":["001215855200002"],"arxiv":["2311.09347"]},"oa_version":"Published Version","_id":"15367","researchdata_availability":"no","status":"public","publisher":"SciPost Foundation","acknowledgement":"We acknowledge useful discussions with M. Geier, A. Levchenko, B. Ramshaw, T. Scaffidi, and\r\nJ. Shabani. This research was funded by the Austrian Science Fund (FWF) F 86.\r\nFor the purpose of open access, authors have applied a CC BY public copyright licence to any\r\nAuthor Accepted Manuscript version arising from this submission. MS acknowledges hospitality of KITP supported in part by the National Science Foundation under Grants No. NSF\r\nPHY-1748958 and PHY-2309135. APH acknowledges the support of the NOMIS foundation.","year":"2024","citation":{"chicago":"Babkin, Serafim, Andrew P Higginbotham, and Maksym Serbyn. “Proximity-Induced Gapless Superconductivity in Two-Dimensional Rashba Semiconductor in Magnetic Field.” SciPost Physics. SciPost Foundation, 2024. https://doi.org/10.21468/scipostphys.16.5.115.","mla":"Babkin, Serafim, et al. “Proximity-Induced Gapless Superconductivity in Two-Dimensional Rashba Semiconductor in Magnetic Field.” SciPost Physics, vol. 16, no. 5, 115, SciPost Foundation, 2024, doi:10.21468/scipostphys.16.5.115.","short":"S. Babkin, A.P. Higginbotham, M. Serbyn, SciPost Physics 16 (2024).","ista":"Babkin S, Higginbotham AP, Serbyn M. 2024. Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. 16(5), 115.","ama":"Babkin S, Higginbotham AP, Serbyn M. Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. 2024;16(5). doi:10.21468/scipostphys.16.5.115","apa":"Babkin, S., Higginbotham, A. P., & Serbyn, M. (2024). Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.16.5.115","ieee":"S. Babkin, A. P. Higginbotham, and M. Serbyn, “Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field,” SciPost Physics, vol. 16, no. 5. SciPost Foundation, 2024."},"isi":1,"das_tickbox":"0","day":"01","arxiv":1,"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"article_type":"original","fulldoi":"https://doi.org/10.21468/scipostphys.16.5.115","date_published":"2024-05-01T00:00:00Z","has_accepted_license":"1","ddc":["530"],"date_updated":"2026-10-16T12:15:53Z","abstract":[{"text":"Two-dimensional semiconductor-superconductor heterostructures form the foundation of numerous nanoscale physical systems. However, measuring the properties of such heterostructures, and characterizing the semiconductor in-situ is challenging. A recent experimental study by [Phys. Rev. Lett. 128, 107701 (2022)] was able to probe the semiconductor within the heterostructure using microwave measurements of the superfluid density. This work revealed a rapid depletion of superfluid density in semiconductor, caused by the in-plane magnetic field which in presence of spin-orbit coupling creates so-called Bogoliubov Fermi surfaces. The experimental work used a simplified theoretical model that neglected the presence of non-magnetic disorder in the semiconductor, hence describing the data only qualitatively. Motivated by experiments, we introduce a theoretical model describing a disordered semiconductor with strong spin-orbit coupling that is proximitized by a superconductor. Our model provides specific predictions for the density of states and superfluid density. Presence of disorder leads to the emergence of a gapless superconducting phase, that may be viewed as a manifestation of Bogoliubov Fermi surface. When applied to real experimental data, our model showcases excellent quantitative agreement, enabling the extraction of material parameters such as mean free path and mobility, and estimating g-tensor after taking into account the orbital contribution of magnetic field. Our model can be used to probe in-situ parameters of other superconductor-semiconductor heterostructures and can be further extended to give access to transport properties.","lang":"eng"}],"file_date_updated":"2024-05-07T12:58:47Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","article_processing_charge":"Yes","date_created":"2024-05-06T09:02:18Z","supplementarymaterial":"no","quality_controlled":"1","project":[{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"},{"grant_number":"F8609","_id":"34a7f947-11ca-11ed-8bc3-c5dc2bbaae25","name":"Center for Correlated Quantum Materials and Solid State Quantum Systems: Probing topology in circuits and quantum materials"}],"publication_status":"published","language":[{"iso":"eng"}],"department":[{"_id":"MaSe"},{"_id":"AnHi"}],"volume":16,"month":"05","type":"journal_article","doi":"10.21468/scipostphys.16.5.115","title":"Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field","oa":1,"publication_identifier":{"issn":["2542-4653"]},"article_number":"115","scopus_import":"1","corr_author":"1","author":[{"first_name":"Serafim","orcid":"0009-0003-7382-8036","last_name":"Babkin","id":"41e64307-6672-11ee-b9ad-cc7a0075a479","full_name":"Babkin, Serafim"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"},{"last_name":"Serbyn","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","full_name":"Serbyn, Maksym","orcid":"0000-0002-2399-5827","first_name":"Maksym"}],"publication":"SciPost Physics"},{"supervisor":[{"last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P","first_name":"Andrew P","orcid":"0000-0003-2607-2363"}],"day":"10","publisher":"Institute of Science and Technology Austria","year":"2024","citation":{"ista":"Mukhopadhyay S. 2024. Thermal effects in one dimensional Josephson chains. Institute of Science and Technology Austria.","ama":"Mukhopadhyay S. Thermal effects in one dimensional Josephson chains. 2024. doi:10.15479/at:ista:17881","apa":"Mukhopadhyay, S. (2024). Thermal effects in one dimensional Josephson chains. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:17881","ieee":"S. Mukhopadhyay, “Thermal effects in one dimensional Josephson chains,” Institute of Science and Technology Austria, 2024.","chicago":"Mukhopadhyay, Soham. “Thermal Effects in One Dimensional Josephson Chains.” Institute of Science and Technology Austria, 2024. https://doi.org/10.15479/at:ista:17881.","mla":"Mukhopadhyay, Soham. Thermal Effects in One Dimensional Josephson Chains. Institute of Science and Technology Austria, 2024, doi:10.15479/at:ista:17881.","short":"S. Mukhopadhyay, Thermal Effects in One Dimensional Josephson Chains, Institute of Science and Technology Austria, 2024."},"_id":"17881","status":"public","researchdata_availability":"unclear","oa_version":"Published Version","file":[{"embargo":"2025-03-13","file_size":10297052,"date_created":"2024-09-12T10:46:04Z","file_name":"PhD_Thesis_Soham_Mukhopadhyay.pdf","file_id":"18059","creator":"smukhopa","date_updated":"2025-03-13T23:30:04Z","content_type":"application/pdf","relation":"main_file","access_level":"open_access","checksum":"ed7763c3bbd59e1d7e1b664de3a26f3c"},{"relation":"source_file","checksum":"e352667482701dd18a9a0e7418aef465","access_level":"closed","creator":"smukhopa","date_updated":"2025-03-13T23:30:04Z","content_type":"application/zip","file_id":"18060","embargo_to":"open_access","file_size":29178634,"date_created":"2024-09-12T10:50:58Z","file_name":"PhD_Thesis_Soham_Mukhopadhyay_source.zip"}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","abstract":[{"text":"This work can be broadly classified into the study of critical phenomena in a one dimensional\r\narray of Josephson junctions. While we study quantum criticality when the array is in thermal\r\nequilibrium at zero bias, the non-equilibrium study involves understanding the bistability of the\r\narray at a critical non-zero bias. This work furthers our knowledge in understanding quantum\r\ncritical behaviour at finite temperatures in a one dimensional Josephson array, while also\r\nestablishing relaxation behaviour dual to that observed in a single Josephson junction.\r\nChapter 1 briefly introduces the model to understand superconductor-insulator phase transition\r\nin a one dimensional Josephson array and points out the state of the field from where we\r\nstarted our zero-bias experiments. In this context it discusses the phase-charge duality observed\r\nin a Josephson array and its dual hysteretic behaviour to that of a single junction, setting the\r\nground for our non-equilibrium study of the array.\r\nChapter 2 shows the experimental setup and the chip layout of the device we measured.\r\nIn chapter 3 we show that, unlike the typical quantum-critical broadening scenario, in one dimensional Josephson arrays temperature dramatically shifts the critical region. This shift leads\r\nto a regime of superconductivity at high temperature, arising from the melted zero-temperature\r\ninsulator. Our results quantitatively explain the low-temperature onset of superconductivity in\r\nnominally insulating regimes, and the transition to the strongly insulating phase. We further\r\npresent, to our knowledge, the first understanding of the onset of anomalous-metallic resistance\r\nsaturation [30]. This work demonstrates a non-trivial interplay between thermal effects and\r\nquantum criticality. A practical consequence is that, counterintuitively, the coherence of\r\nhigh-impedance quantum circuits is expected to be stabilized by thermal fluctuations.\r\nIn chapter 4, we show relaxation oscillations in a current-biased one dimensional array of\r\nJosephson junctions. These oscillations are well described by a circuit model, dual to the\r\nordinary Josephson relaxation oscillations [72]. Injection locking these oscillations results in\r\ncurrent plateaux. The relaxation step is found to obey a characteristic self-consistent relation,\r\nsuggesting that it is governed by overheating effects.\r\nChapter 5 describes the various checks and analysis we performed to support our conclusions\r\nmade in chapters 3 and 4.\r\nFinally, chapter 6 describes the nanofabrication steps and the finite element electromagnetic\r\nsimulations we performed to fabricate our devices.","lang":"eng"}],"file_date_updated":"2025-03-13T23:30:04Z","date_updated":"2026-10-02T11:12:07Z","alternative_title":["ISTA Thesis"],"OA_place":"publisher","date_published":"2024-09-10T00:00:00Z","has_accepted_license":"1","ddc":["539"],"fulldoi":"https://doi.org/10.15479/at:ista:17881","month":"09","page":"82","publication_status":"published","department":[{"_id":"GradSch"},{"_id":"AnHi"}],"language":[{"iso":"eng"}],"degree_awarded":"PhD","project":[{"grant_number":"P33692","name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931"}],"related_material":{"record":[{"status":"public","id":"14032","relation":"part_of_dissertation"},{"status":"public","id":"18057","relation":"part_of_dissertation"}]},"article_processing_charge":"No","date_created":"2024-09-08T10:23:25Z","supplementarymaterial":"unclear","author":[{"last_name":"Mukhopadhyay","id":"FDE60288-A89D-11E9-947F-1AF6E5697425","full_name":"Mukhopadhyay, Soham","first_name":"Soham","orcid":"0000-0001-5263-5559"}],"corr_author":"1","doi_confirm":"1","oa":1,"title":"Thermal effects in one dimensional Josephson chains","publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-043-5"]},"type":"dissertation","doi":"10.15479/at:ista:17881"},{"date_published":"2024-08-14T00:00:00Z","fulldoi":"https://doi.org/10.48550/arXiv.2408.07829","OA_place":"repository","date_updated":"2026-10-26T23:30:57Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","ec_funded":1,"abstract":[{"lang":"eng","text":"We report relaxation oscillations in a one-dimensional array of Josephson\r\njunctions. The oscillations are circuit-dual to those ordinarily observed in\r\nsingle junctions. The dual circuit quantitatively accounts for temporal\r\ndynamics of the array, including the dependence on biasing conditions.\r\nInjection locking the oscillations results in well-developed current plateaux.\r\nA thermal model explains the relaxation step of the oscillations."}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"external_id":{"arxiv":["2408.07829"]},"_id":"18057","researchdata_availability":"no","status":"public","oa_version":"Preprint","day":"14","arxiv":1,"das_tickbox":"0","citation":{"chicago":"Mukhopadhyay, Soham, Diego A Lancheros Naranjo, Jorden L Senior, and Andrew P Higginbotham. “Dual Relaxation Oscillations in a Josephson Junction Array.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2408.07829.","short":"S. Mukhopadhyay, D.A. Lancheros Naranjo, J.L. Senior, A.P. Higginbotham, ArXiv (n.d.).","mla":"Mukhopadhyay, Soham, et al. “Dual Relaxation Oscillations in a Josephson Junction Array.” ArXiv, 2408.07829, doi:10.48550/arXiv.2408.07829.","ista":"Mukhopadhyay S, Lancheros Naranjo DA, Senior JL, Higginbotham AP. Dual relaxation oscillations in a Josephson junction array. arXiv, 2408.07829.","ama":"Mukhopadhyay S, Lancheros Naranjo DA, Senior JL, Higginbotham AP. Dual relaxation oscillations in a Josephson junction array. arXiv. doi:10.48550/arXiv.2408.07829","ieee":"S. Mukhopadhyay, D. A. Lancheros Naranjo, J. L. Senior, and A. P. Higginbotham, “Dual relaxation oscillations in a Josephson junction array,” arXiv. .","apa":"Mukhopadhyay, S., Lancheros Naranjo, D. A., Senior, J. L., & Higginbotham, A. P. (n.d.). Dual relaxation oscillations in a Josephson junction array. arXiv. https://doi.org/10.48550/arXiv.2408.07829"},"year":"2024","acknowledgement":"We gratefully acknowledge support from the MIBA machine shop and Nanofabrication Facility at IST Austria. Work was supported by Austrian FWF grant P33692-N (S.M., J.S. and A.P.H.), the European Union’s Horizon 2020 Research and Innovation program under the Marie Sk lodowska-Curie Grant Agreement No. 754411 (J.S.), and a NOMIS foundation research grant (A.P.H.).\r\n","oa":1,"title":"Dual relaxation oscillations in a Josephson junction array","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2408.07829"}],"doi":"10.48550/arXiv.2408.07829","type":"preprint","article_number":"2408.07829","corr_author":"1","publication":"arXiv","author":[{"id":"FDE60288-A89D-11E9-947F-1AF6E5697425","last_name":"Mukhopadhyay","full_name":"Mukhopadhyay, Soham","orcid":"0000-0001-5263-5559","first_name":"Soham"},{"first_name":"Diego A","id":"6c55e976-15b2-11ec-abd3-d790e8937fde","last_name":"Lancheros Naranjo","full_name":"Lancheros Naranjo, Diego A"},{"first_name":"Jorden L","orcid":"0000-0002-0672-9295","last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E","full_name":"Senior, Jorden L"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"}],"supplementarymaterial":"no","date_created":"2024-09-11T09:25:22Z","article_processing_charge":"No","project":[{"grant_number":"754411","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships"},{"grant_number":"P33692","name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"}],"related_material":{"record":[{"status":"public","id":"20324","relation":"later_version"},{"relation":"dissertation_contains","id":"17881","status":"public"}]},"department":[{"_id":"AnHi"},{"_id":"GradSch"}],"language":[{"iso":"eng"}],"publication_status":"draft","month":"08"},{"APC_amount":"3782,54","article_processing_charge":"Yes","date_created":"2024-06-27T10:58:06Z","supplementarymaterial":"yes","quality_controlled":"1","related_material":{"record":[{"id":"18978","relation":"research_data","status":"public"},{"status":"public","id":"19533","relation":"dissertation_contains"}]},"project":[{"grant_number":"862644","call_identifier":"H2020","name":"Quantum readout techniques and technologies","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E"},{"call_identifier":"FWF","_id":"3AC91DDA-15DF-11EA-824D-93A3E7B544D1","name":"FWF Open Access Fund"},{"grant_number":"F07105","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits"}],"publication_status":"published","department":[{"_id":"JoFi"},{"_id":"AnHi"}],"volume":5,"language":[{"iso":"eng"}],"month":"02","type":"journal_article","doi":"10.1103/prxquantum.5.010327","oa":1,"title":"Emergent macroscopic bistability induced by a single superconducting qubit","publication_identifier":{"eissn":["2691-3399"]},"article_number":"010327","scopus_import":"1","corr_author":"1","author":[{"first_name":"Riya","orcid":"0000-0001-7641-8348","full_name":"Sett, Riya","last_name":"Sett","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani","orcid":"0000-0001-6937-5773","first_name":"Farid"},{"last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","full_name":"Phan, Duc T","first_name":"Duc T"},{"first_name":"Shabir","orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir","last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Vukics, Andras","last_name":"Vukics","first_name":"Andras"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X"}],"publication":"PRX Quantum","acknowledged_ssus":[{"_id":"M-Shop"}],"intvolume":" 5","file":[{"file_size":1443351,"date_created":"2024-06-28T12:04:43Z","file_name":"2024_PRXQuantum_Sett.pdf","success":1,"file_id":"17185","creator":"cchlebak","content_type":"application/pdf","date_updated":"2024-06-28T12:04:43Z","checksum":"0833880d47f74ad1deda93a1d8ffa5a7","access_level":"open_access","relation":"main_file"}],"issue":"1","external_id":{"arxiv":["2210.14182"],"isi":["001171652500001"]},"oa_version":"Published Version","researchdata_availability":"yes","_id":"17183","status":"public","publisher":"American Physical Society","year":"2024","acknowledgement":"This work has received funding from the Austrian Science Fund (FWF) through BeyondC (F7105) and the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 862644 (FETopen QUARTET). A.V. acknowledges support from the National Research, Development and Innovation Office of Hungary (NKFIH) within the Quantum Information National Laboratory of Hungary. The authors thank the MIBA workshop and the Institute of Science and Technology Austria nanofabrication facility for technical support. We are grateful to HUN-REN Cloud for providing us with suitable computational infrastructure for the simulations.","citation":{"apa":"Sett, R., Hassani, F., Phan, D. T., Barzanjeh, S., Vukics, A., & Fink, J. M. (2024). Emergent macroscopic bistability induced by a single superconducting qubit. PRX Quantum. American Physical Society. https://doi.org/10.1103/prxquantum.5.010327","ieee":"R. Sett, F. Hassani, D. T. Phan, S. Barzanjeh, A. Vukics, and J. M. Fink, “Emergent macroscopic bistability induced by a single superconducting qubit,” PRX Quantum, vol. 5, no. 1. American Physical Society, 2024.","ista":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. 2024. Emergent macroscopic bistability induced by a single superconducting qubit. PRX Quantum. 5(1), 010327.","ama":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. Emergent macroscopic bistability induced by a single superconducting qubit. PRX Quantum. 2024;5(1). doi:10.1103/prxquantum.5.010327","short":"R. Sett, F. Hassani, D.T. Phan, S. Barzanjeh, A. Vukics, J.M. Fink, PRX Quantum 5 (2024).","mla":"Sett, Riya, et al. “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” PRX Quantum, vol. 5, no. 1, 010327, American Physical Society, 2024, doi:10.1103/prxquantum.5.010327.","chicago":"Sett, Riya, Farid Hassani, Duc T Phan, Shabir Barzanjeh, Andras Vukics, and Johannes M Fink. “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” PRX Quantum. American Physical Society, 2024. https://doi.org/10.1103/prxquantum.5.010327."},"isi":1,"das_tickbox":"0","arxiv":1,"day":"16","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"article_type":"original","fulldoi":"https://doi.org/10.1103/prxquantum.5.010327","date_published":"2024-02-16T00:00:00Z","OA_type":"gold","has_accepted_license":"1","ddc":["530"],"DOAJ_listed":"1","OA_place":"publisher","date_updated":"2026-10-26T23:31:03Z","ec_funded":1,"abstract":[{"lang":"eng","text":"The photon blockade breakdown in a continuously driven cavity QED system has been proposed as a prime example for a first-order driven-dissipative quantum phase transition. However, the predicted scaling from a microscopic behavior—dominated by quantum fluctuations—to a macroscopic one—characterized by stable phases—and the associated exponents and phase diagram have not been observed so far. In this work we couple a single transmon qubit with a fixed coupling strength 𝑔 to a superconducting cavity that is in situ bandwidth 𝜅 tunable to controllably approach this thermodynamic limit. Even though the system remains microscopic, we observe its behavior becoming increasingly macroscopic as a function of 𝑔/𝜅. For the highest realized 𝑔/𝜅 of approximately 287, the system switches with a characteristic timescale as long as 6 s between a bright coherent state with approximately 8×103 intracavity photons and the vacuum state. This exceeds the microscopic timescales by 6 orders of magnitude and approaches the perfect hysteresis expected between two macroscopic attractors in the thermodynamic limit. These findings and interpretation are qualitatively supported by neoclassical theory and large-scale quantum-jump Monte Carlo simulations. Besides shedding more light on driven-dissipative physics in the limit of strong light-matter coupling, this system might also find applications in quantum sensing and metrology."}],"file_date_updated":"2024-06-28T12:04:43Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345"},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"orcid":"0000-0001-7641-8348","first_name":"Riya","full_name":"Sett, Riya","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","last_name":"Sett"},{"first_name":"Farid","orcid":"0000-0001-6937-5773","full_name":"Hassani, Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","full_name":"Phan, Duc T","first_name":"Duc T"},{"full_name":"Barzanjeh, Shabir","last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","first_name":"Shabir","orcid":"0000-0003-0415-1423"},{"first_name":"Andras","full_name":"Vukics, Andras","last_name":"Vukics"},{"full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","orcid":"0000-0001-8112-028X","first_name":"Johannes M"}],"abstract":[{"lang":"eng","text":"Data analysis files for the manuscript \"Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit\".\r\n\r\nThis contains the raw data and the data analysis files for generating the figures in the manuscript.\r\n\r\n Figure1 file - The raw data of cavity transmission spectra for 6 different kappas are there. They are fitted with input-output theory in the python file.\r\n Figure2 file - The raw data at 8 MHz kappa are included. all hte figures in figure 2 are generated in the python file\r\n Figure3 file - The raw data of PBB single shot measurements at all kappas are included. The detailed analysis and the Figure3 generated for the paper are all in the python analysis file. Also, thefiles containing the time-evolution of the intensity from Master Equation solution are included.\r\nFigure4 file - The raw data at 2.6 MHz for different drive detunings and the corresponding analyses are included. And the python file includes the analysis of the experimental data as well as approximate neoclassical equations solutions for 2-level and 3-level transmons are included. "}],"date_updated":"2026-10-26T23:31:03Z","corr_author":"1","OA_place":"repository","date_published":"2024-01-16T00:00:00Z","title":"Data Analysis files for \"Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit\"","oa":1,"OA_type":"gold","has_accepted_license":"1","ddc":["530"],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"type":"research_data_reference","doi":"10.5281/ZENODO.10518320","fulldoi":"https://doi.org/10.5281/ZENODO.10518320","main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/zenodo.10518320"}],"month":"01","day":"16","publisher":"Zenodo","year":"2024","citation":{"mla":"Sett, Riya, et al. Data Analysis Files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” Zenodo, 2024, doi:10.5281/ZENODO.10518320.","short":"R. Sett, F. Hassani, D.T. Phan, S. Barzanjeh, A. Vukics, J.M. Fink, (2024).","chicago":"Sett, Riya, Farid Hassani, Duc T Phan, Shabir Barzanjeh, Andras Vukics, and Johannes M Fink. “Data Analysis Files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.’” Zenodo, 2024. https://doi.org/10.5281/ZENODO.10518320.","apa":"Sett, R., Hassani, F., Phan, D. T., Barzanjeh, S., Vukics, A., & Fink, J. M. (2024). Data Analysis files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” Zenodo. https://doi.org/10.5281/ZENODO.10518320","ieee":"R. Sett, F. Hassani, D. T. Phan, S. Barzanjeh, A. Vukics, and J. M. Fink, “Data Analysis files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.’” Zenodo, 2024.","ista":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. 2024. Data Analysis files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit’, Zenodo, 10.5281/ZENODO.10518320.","ama":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. Data Analysis files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” 2024. doi:10.5281/ZENODO.10518320"},"_id":"18978","status":"public","oa_version":"Published Version","department":[{"_id":"JoFi"},{"_id":"AnHi"}],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"17183"},{"relation":"used_in_publication","id":"19533","status":"public"}]},"article_processing_charge":"No","date_created":"2025-01-30T08:30:03Z"},{"file":[{"file_size":10778238,"date_created":"2024-09-20T12:07:48Z","embargo":"2025-05-20","file_name":"PhD_DPuglia_Final.pdf","file_id":"18105","creator":"cchlebak","date_updated":"2025-05-20T22:30:05Z","content_type":"application/pdf","access_level":"open_access","checksum":"7969263451b2356bfa0924725aa9de10","relation":"main_file"},{"creator":"cchlebak","content_type":"application/x-zip-compressed","date_updated":"2025-05-20T22:30:05Z","relation":"source_file","access_level":"closed","checksum":"98dfe7675775e30efffa03f7ff7c091b","file_size":385419748,"date_created":"2024-09-20T12:13:09Z","file_name":"PhD_DPuglia_Thesis.zip","file_id":"18106","embargo_to":"open_access"}],"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"supervisor":[{"orcid":"0000-0003-2607-2363","first_name":"Andrew P","full_name":"Higginbotham, Andrew P","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87"}],"day":"20","publisher":"Institute of Science and Technology Austria","citation":{"apa":"Puglia, D. (2024). Everyday electromechanics: Capacitive strong coupling to mechanical motion. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:18104","ieee":"D. Puglia, “Everyday electromechanics: Capacitive strong coupling to mechanical motion,” Institute of Science and Technology Austria, 2024.","ama":"Puglia D. Everyday electromechanics: Capacitive strong coupling to mechanical motion. 2024. doi:10.15479/at:ista:18104","ista":"Puglia D. 2024. Everyday electromechanics: Capacitive strong coupling to mechanical motion. Institute of Science and Technology Austria.","mla":"Puglia, Denise. Everyday Electromechanics: Capacitive Strong Coupling to Mechanical Motion. Institute of Science and Technology Austria, 2024, doi:10.15479/at:ista:18104.","short":"D. Puglia, Everyday Electromechanics: Capacitive Strong Coupling to Mechanical Motion, Institute of Science and Technology Austria, 2024.","chicago":"Puglia, Denise. “Everyday Electromechanics: Capacitive Strong Coupling to Mechanical Motion.” Institute of Science and Technology Austria, 2024. https://doi.org/10.15479/at:ista:18104."},"year":"2024","status":"public","_id":"18104","researchdata_availability":"unclear","oa_version":"Published Version","OA_place":"publisher","date_published":"2024-09-20T00:00:00Z","has_accepted_license":"1","ddc":["530"],"tmp":{"name":"Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)","short":"CC BY-NC (4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc/4.0/legalcode","image":"/images/cc_by_nc.png"},"fulldoi":"https://doi.org/10.15479/at:ista:18104","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","file_date_updated":"2025-05-20T22:30:05Z","abstract":[{"text":"We introduce a new all-electric platform, that strong couples light to mechanical motion\r\nby ensuring that the external environmental coupling dominates over internal mechanical\r\ndissipation. The system only has three everyday components: AC, DC, and a fip-chip, in which\r\na metallized silicon nitride membrane is fipped on top of the device under test. This everyday\r\nelectromechanical device can be operated at low or room temperature and has 10000× lower\r\ninsertion loss than a comparable commercial quartz crystal, achieves a position imprecision\r\nmatching state-of-the-art optical interferometer, and enables remote cooling of mechanical\r\nmotion. The spatial properties of higher order mechanical modes are a promising feature for\r\nreconstructing unknown charge distributions.\r\n","lang":"eng"}],"alternative_title":["ISTA Thesis"],"date_updated":"2026-10-21T14:08:09Z","degree_awarded":"PhD","project":[{"grant_number":"P33692","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","name":"Cavity electromechanics across a quantum phase transition"},{"grant_number":"26088","name":"Surface Charge and Tunneling Multi-Mode Imaging","_id":"62843413-2b32-11ec-9570-c4ec6eabfae7"}],"related_material":{"record":[{"relation":"part_of_dissertation","id":"18143","status":"public"}]},"article_processing_charge":"No","date_created":"2024-09-20T12:13:30Z","supplementarymaterial":"unclear","month":"09","page":"63","publication_status":"published","language":[{"iso":"eng"}],"department":[{"_id":"GradSch"},{"_id":"AnHi"}],"doi_confirm":"1","oa":1,"title":"Everyday electromechanics: Capacitive strong coupling to mechanical motion","publication_identifier":{"issn":["2663-337X"]},"type":"dissertation","doi":"10.15479/at:ista:18104","author":[{"first_name":"Denise","orcid":"0000-0003-1144-2763","full_name":"Puglia, Denise","last_name":"Puglia","id":"4D495994-AE37-11E9-AC72-31CAE5697425"}],"corr_author":"1"},{"abstract":[{"text":"Strong optomechanical coupling -- a regime where mechanical motion is damped\r\nby environmental radiation -- has traditionally required demanding experimental\r\ningredients such as superconducting resonators, high-quality optical cavities,\r\nor large magnetic fields. Here we demonstrate a room temperature, cavity-free,\r\nall-electric device reaching this regime at radio frequencies, enabled by a\r\nmechanically compliant parallel-plate capacitor with a nanoscale plate\r\nseparation and an aspect ratio exceeding 1,000. The device has four orders of\r\nmagnitude lower insertion loss than a comparable commercial quartz crystal, and\r\nachieves a position imprecision rivaling an optical interferometer. With the\r\nhelp of a back-action isolation scheme, we observe radiative cooling of\r\nmechanical motion by a remote cryogenic load. This work provides a\r\ntechnologically accessible route to high-precision sensing, transduction, and\r\nsignal processing.","lang":"eng"}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2026-10-26T23:31:12Z","OA_place":"repository","fulldoi":"https://doi.org/10.48550/arXiv.2407.15314","date_published":"2024-08-24T00:00:00Z","year":"2024","citation":{"ista":"Puglia D, Odessey RH, Burns PS, Luhmann N, Schmid S, Higginbotham AP. Room temperature, cavity-free capacitive strong coupling to mechanical motion. arXiv, 2407.15314.","ama":"Puglia D, Odessey RH, Burns PS, Luhmann N, Schmid S, Higginbotham AP. Room temperature, cavity-free capacitive strong coupling to mechanical motion. arXiv. doi:10.48550/arXiv.2407.15314","apa":"Puglia, D., Odessey, R. H., Burns, P. S., Luhmann, N., Schmid, S., & Higginbotham, A. P. (n.d.). Room temperature, cavity-free capacitive strong coupling to mechanical motion. arXiv. https://doi.org/10.48550/arXiv.2407.15314","ieee":"D. Puglia, R. H. Odessey, P. S. Burns, N. Luhmann, S. Schmid, and A. P. Higginbotham, “Room temperature, cavity-free capacitive strong coupling to mechanical motion,” arXiv. .","chicago":"Puglia, Denise, Rachel H Odessey, Peter S. Burns, Niklas Luhmann, Silvan Schmid, and Andrew P Higginbotham. “Room Temperature, Cavity-Free Capacitive Strong Coupling to Mechanical Motion.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2407.15314.","short":"D. Puglia, R.H. Odessey, P.S. Burns, N. Luhmann, S. Schmid, A.P. Higginbotham, ArXiv (n.d.).","mla":"Puglia, Denise, et al. “Room Temperature, Cavity-Free Capacitive Strong Coupling to Mechanical Motion.” ArXiv, 2407.15314, doi:10.48550/arXiv.2407.15314."},"arxiv":1,"day":"24","das_tickbox":"0","oa_version":"Preprint","_id":"18143","researchdata_availability":"no","status":"public","external_id":{"arxiv":["2407.15314"]},"author":[{"first_name":"Denise","orcid":"0000-0003-1144-2763","full_name":"Puglia, Denise","last_name":"Puglia","id":"4D495994-AE37-11E9-AC72-31CAE5697425"},{"first_name":"Rachel H","last_name":"Odessey","id":"9a7a5123-8972-11ed-ae7b-dd1f2af457bd","full_name":"Odessey, Rachel H"},{"last_name":"Burns","full_name":"Burns, Peter S.","first_name":"Peter S."},{"first_name":"Niklas","full_name":"Luhmann, Niklas","last_name":"Luhmann"},{"first_name":"Silvan","full_name":"Schmid, Silvan","last_name":"Schmid"},{"last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P","orcid":"0000-0003-2607-2363","first_name":"Andrew P"}],"publication":"arXiv","corr_author":"1","article_number":"2407.15314","doi":"10.48550/arXiv.2407.15314","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2407.15314"}],"type":"preprint","oa":1,"title":"Room temperature, cavity-free capacitive strong coupling to mechanical motion","month":"08","language":[{"iso":"eng"}],"department":[{"_id":"AnHi"}],"publication_status":"draft","related_material":{"record":[{"relation":"later_version","id":"19026","status":"public"},{"status":"public","relation":"dissertation_contains","id":"18104"}]},"project":[{"_id":"62843413-2b32-11ec-9570-c4ec6eabfae7","name":"Surface Charge and Tunneling Multi-Mode Imaging","grant_number":"26088"},{"_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","name":"Cavity electromechanics across a quantum phase transition","grant_number":"P33692"}],"supplementarymaterial":"no","date_created":"2024-09-26T06:58:27Z","article_processing_charge":"No"},{"_id":"12913","status":"public","oa_version":"Published Version","isi":1,"day":"26","publisher":"Springer Nature","year":"2023","acknowledgement":"We are grateful for the fruitful discussions with Allan MacDonald and Andrei Bernevig. D.K.E. acknowledges support from the Ministry of Economy and Competitiveness of Spain through the “Severo Ochoa” program for Centers of Excellence in R&D (SE5-0522), Fundació Privada Cellex, Fundació Privada Mir-Puig, the Generalitat de Catalunya through the CERCA program, funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 852927)” and the La Caixa Foundation. K.T.L. acknowledges the support of the Ministry of Science and Technology of China and the HKRGC through grants MOST20SC04, C6025-19G, 16310219, 16309718, and 16310520. J.D.M. acknowledges support from the INPhINIT ‘la Caixa’ Foundation (ID 100010434) fellowship program (LCF/BQ/DI19/11730021). Y.M.X. acknowledges the support of HKRGC through Grant No. PDFS2223-6S01.","citation":{"ama":"Díez-Mérida J, Díez-Carlón A, Yang SY, et al. Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene. Nature Communications. 2023;14. doi:10.1038/s41467-023-38005-7","ista":"Díez-Mérida J, Díez-Carlón A, Yang SY, Xie YM, Gao XJ, Senior JL, Watanabe K, Taniguchi T, Lu X, Higginbotham AP, Law KT, Efetov DK. 2023. Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene. Nature Communications. 14, 2396.","ieee":"J. Díez-Mérida et al., “Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene,” Nature Communications, vol. 14. Springer Nature, 2023.","apa":"Díez-Mérida, J., Díez-Carlón, A., Yang, S. Y., Xie, Y. M., Gao, X. J., Senior, J. L., … Efetov, D. K. (2023). Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-023-38005-7","chicago":"Díez-Mérida, J., A. Díez-Carlón, S. Y. Yang, Y. M. Xie, X. J. Gao, Jorden L Senior, K. Watanabe, et al. “Symmetry-Broken Josephson Junctions and Superconducting Diodes in Magic-Angle Twisted Bilayer Graphene.” Nature Communications. Springer Nature, 2023. https://doi.org/10.1038/s41467-023-38005-7.","short":"J. Díez-Mérida, A. Díez-Carlón, S.Y. Yang, Y.M. Xie, X.J. Gao, J.L. Senior, K. Watanabe, T. Taniguchi, X. Lu, A.P. Higginbotham, K.T. Law, D.K. Efetov, Nature Communications 14 (2023).","mla":"Díez-Mérida, J., et al. “Symmetry-Broken Josephson Junctions and Superconducting Diodes in Magic-Angle Twisted Bilayer Graphene.” Nature Communications, vol. 14, 2396, Springer Nature, 2023, doi:10.1038/s41467-023-38005-7."},"external_id":{"pmid":["37100775"],"isi":["000979744000004"]},"intvolume":" 14","file":[{"file_id":"12917","success":1,"file_name":"2023_NatureComm_DiezMerida.pdf","date_created":"2023-05-08T07:26:40Z","file_size":1405588,"relation":"main_file","checksum":"a778105665c10beb2354c92d2b295115","access_level":"open_access","content_type":"application/pdf","date_updated":"2023-05-08T07:26:40Z","creator":"dernst"}],"date_updated":"2023-08-01T14:34:00Z","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","abstract":[{"lang":"eng","text":"The coexistence of gate-tunable superconducting, magnetic and topological orders in magic-angle twisted bilayer graphene provides opportunities for the creation of hybrid Josephson junctions. Here we report the fabrication of gate-defined symmetry-broken Josephson junctions in magic-angle twisted bilayer graphene, where the weak link is gate-tuned close to the correlated insulator state with a moiré filling factor of υ = −2. We observe a phase-shifted and asymmetric Fraunhofer pattern with a pronounced magnetic hysteresis. Our theoretical calculations of the junction weak link—with valley polarization and orbital magnetization—explain most of these unconventional features. The effects persist up to the critical temperature of 3.5 K, with magnetic hysteresis observed below 800 mK. We show how the combination of magnetization and its current-induced magnetization switching allows us to realise a programmable zero-field superconducting diode. Our results represent a major advance towards the creation of future superconducting quantum electronic devices."}],"file_date_updated":"2023-05-08T07:26:40Z","date_published":"2023-04-26T00:00:00Z","has_accepted_license":"1","ddc":["530"],"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"article_type":"original","fulldoi":"https://doi.org/10.1038/s41467-023-38005-7","publication_status":"published","department":[{"_id":"AnHi"}],"volume":14,"language":[{"iso":"eng"}],"month":"04","article_processing_charge":"No","date_created":"2023-05-07T22:01:03Z","quality_controlled":"1","scopus_import":"1","publication":"Nature Communications","author":[{"full_name":"Díez-Mérida, J.","last_name":"Díez-Mérida","first_name":"J."},{"first_name":"A.","last_name":"Díez-Carlón","full_name":"Díez-Carlón, A."},{"full_name":"Yang, S. Y.","last_name":"Yang","first_name":"S. Y."},{"full_name":"Xie, Y. M.","last_name":"Xie","first_name":"Y. M."},{"first_name":"X. J.","full_name":"Gao, X. J.","last_name":"Gao"},{"last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E","full_name":"Senior, Jorden L","first_name":"Jorden L"},{"full_name":"Watanabe, K.","last_name":"Watanabe","first_name":"K."},{"first_name":"T.","full_name":"Taniguchi, T.","last_name":"Taniguchi"},{"last_name":"Lu","full_name":"Lu, X.","first_name":"X."},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"},{"first_name":"K. T.","full_name":"Law, K. T.","last_name":"Law"},{"last_name":"Efetov","full_name":"Efetov, Dmitri K.","first_name":"Dmitri K."}],"oa":1,"title":"Symmetry-broken Josephson junctions and superconducting diodes in magic-angle twisted bilayer graphene","pmid":1,"publication_identifier":{"eissn":["2041-1723"]},"type":"journal_article","doi":"10.1038/s41467-023-38005-7","article_number":"2396"},{"date_updated":"2026-07-08T08:38:43Z","alternative_title":["ISTA Thesis"],"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","file_date_updated":"2023-11-22T09:46:06Z","abstract":[{"lang":"eng","text":"Superconductor-semiconductor heterostructures currently capture a significant amount of research interest and they serve as the physical platform in many proposals towards topological quantum computation.\r\nDespite being under extensive investigations, historically using transport techniques, the basic properties of the interface between the superconductor and the semiconductor remain to be understood.\r\n\r\nIn this thesis, two separate studies on the Al-InAs heterostructures are reported with the first focusing on the physics of the material motivated by the emergence of a new phase, the Bogoliubov-Fermi surface. \r\nThe second focuses on a technological application, a gate-tunable Josephson parametric amplifier.\r\n\r\nIn the first study, we investigate the hypothesized unconventional nature of the induced superconductivity at the interface between the Al thin film and the InAs quantum well.\r\nWe embed a two-dimensional Al-InAs hybrid system in a resonant microwave circuit allowing measurements of change in inductance.\r\nThe behaviour of the resonance in a range of temperature and in-plane magnetic field has been studied and compared with the theory of conventional s-wave superconductor and a two-component theory that includes both contribution of the $s$-wave pairing in Al and the intraband $p \\pm ip$ pairing in InAs.\r\nMeasuring the temperature dependence of resonant frequency, no discrepancy is found between data and the conventional theory.\r\nWe observe the breakdown of superconductivity due to an applied magnetic field which contradicts the conventional theory.\r\nIn contrast, the data can be captured quantitatively by fitting to a two-component model.\r\nWe find the evidence of the intraband $p \\pm ip$ pairing in the InAs and the emergence of the Bogoliubov-Fermi surfaces due to magnetic field with the characteristic value $B^* = 0.33~\\mathrm{T}$.\r\nFrom the fits, the sheet resistance of Al, the carrier density and mobility in InAs are determined.\r\nBy systematically studying the anisotropy of the circuit response, we find weak anisotropy for $B < B^*$ and increasingly strong anisotropy for $B > B^*$ resulting in a pronounced two-lobe structure in polar plot of frequency versus field angle.\r\nStrong resemblance between the field dependence of dissipation and superfluid density hints at a hidden signature of the Bogoliubov-Fermi surface that is burried in the dissipation data.\r\n\r\nIn the second study, we realize a parametric amplifier with a Josephson field effect transistor as the active element.\r\nThe device's modest construction consists of a gated SNS weak link embedded at the center of a coplanar waveguide resonator.\r\nBy applying a gate voltage, the resonant frequency is field-effect tunable over a range of 2 GHz.\r\nModelling the JoFET minimally as a parallel RL circuit, the dissipation introduced by the JoFET can be quantitatively related to the gate voltage.\r\nWe observed gate-tunable Kerr nonlinearity qualitatively in line with expectation.\r\nThe JoFET amplifier has 20 dB of gain, 4 MHz of instantaneous bandwidth, and a 1dB compression point of -125.5 dBm when operated at a fixed resonant frequency.\r\nIn general, the signal-to-noise ratio is improved by 5-7 dB when the JoFET amplifier is activated compared.\r\nThe noise of the measurement chain and insertion loss of relevant circuit elements are calibrated to determine the expected and the real noise performance of the JoFET amplifier.\r\nAs a quantification of the noise performance, the measured total input-referred noise of the JoFET amplifier is in good agreement with the estimated expectation which takes device loss into account.\r\nWe found that the noise performance of the device reported in this document approaches one photon of total input-referred added noise which is the quantum limit imposed in nondegenerate parametric amplifier."}],"has_accepted_license":"1","date_published":"2023-11-16T00:00:00Z","ddc":["530"],"tmp":{"name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","short":"CC BY-NC-SA (4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode","image":"/images/cc_by_nc_sa.png"},"keyword":["superconductor-semiconductor","superconductivity","Al","InAs","p-wave","superconductivity","JPA","microwave"],"fulldoi":"https://doi.org/10.15479/14547","OA_place":"publisher","status":"public","_id":"14547","oa_version":"Published Version","supervisor":[{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"}],"day":"16","publisher":"Institute of Science and Technology Austria","year":"2023","citation":{"short":"D.T. Phan, Resonant Microwave Spectroscopy of Al-InAs, Institute of Science and Technology Austria, 2023.","mla":"Phan, Duc T. Resonant Microwave Spectroscopy of Al-InAs. Institute of Science and Technology Austria, 2023, doi:10.15479/14547.","chicago":"Phan, Duc T. “Resonant Microwave Spectroscopy of Al-InAs.” Institute of Science and Technology Austria, 2023. https://doi.org/10.15479/14547.","apa":"Phan, D. T. (2023). Resonant microwave spectroscopy of Al-InAs. Institute of Science and Technology Austria. https://doi.org/10.15479/14547","ieee":"D. T. Phan, “Resonant microwave spectroscopy of Al-InAs,” Institute of Science and Technology Austria, 2023.","ista":"Phan DT. 2023. Resonant microwave spectroscopy of Al-InAs. Institute of Science and Technology Austria.","ama":"Phan DT. Resonant microwave spectroscopy of Al-InAs. 2023. doi:10.15479/14547"},"acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"Bio"}],"file":[{"date_updated":"2023-11-22T09:46:06Z","content_type":"application/pdf","creator":"pduc","checksum":"db0c37d213bc002125bd59690e9db246","access_level":"open_access","relation":"main_file","file_name":"Phan_Thesis_pdfa.pdf","date_created":"2023-11-17T13:36:44Z","file_size":34828019,"file_id":"14548"},{"creator":"pduc","content_type":"application/zip","date_updated":"2023-11-17T13:47:54Z","checksum":"8d3bd6afa279a0078ffd13e06bb6d56d","access_level":"closed","relation":"source_file","file_size":279319709,"date_created":"2023-11-17T13:44:53Z","file_name":"dissertation_src.zip","file_id":"14549"}],"corr_author":"1","author":[{"full_name":"Phan, Duc T","last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","first_name":"Duc T"}],"oa":1,"title":"Resonant microwave spectroscopy of Al-InAs","publication_identifier":{"issn":["2663-337X"]},"type":"dissertation","doi":"10.15479/14547","page":"80","publication_status":"published","department":[{"_id":"GradSch"},{"_id":"AnHi"}],"language":[{"iso":"eng"}],"month":"11","license":"https://creativecommons.org/licenses/by-nc-sa/4.0/","article_processing_charge":"No","date_created":"2023-11-17T13:45:26Z","degree_awarded":"PhD","related_material":{"record":[{"relation":"part_of_dissertation","id":"10851","status":"public"},{"relation":"part_of_dissertation","id":"13264","status":"public"}]}},{"month":"06","publication_status":"published","department":[{"_id":"AnHi"},{"_id":"OnHo"}],"volume":19,"language":[{"iso":"eng"}],"related_material":{"record":[{"id":"14547","relation":"dissertation_contains","status":"public"}]},"quality_controlled":"1","article_processing_charge":"No","date_created":"2023-07-23T22:01:12Z","supplementarymaterial":"yes","author":[{"first_name":"Duc T","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","last_name":"Phan","full_name":"Phan, Duc T"},{"first_name":"Paul","last_name":"Falthansl-Scheinecker","id":"85b43b21-15b2-11ec-abd3-e2c252cc2285","full_name":"Falthansl-Scheinecker, Paul"},{"first_name":"Umang","id":"4328fa4c-f128-11eb-9611-c107b0fe4d51","last_name":"Mishra","full_name":"Mishra, Umang"},{"last_name":"Strickland","full_name":"Strickland, W. M.","first_name":"W. M."},{"full_name":"Langone, D.","last_name":"Langone","first_name":"D."},{"first_name":"J.","last_name":"Shabani","full_name":"Shabani, J."},{"orcid":"0000-0003-2607-2363","first_name":"Andrew P","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"}],"publication":"Physical Review Applied","scopus_import":"1","corr_author":"1","article_number":"064032","type":"journal_article","main_file_link":[{"url":"https://arxiv.org/abs/2206.05746","open_access":"1"}],"doi":"10.1103/PhysRevApplied.19.064032","oa":1,"title":"Gate-tunable superconductor-semiconductor parametric amplifier","publication_identifier":{"eissn":["2331-7019"]},"publisher":"American Physical Society","citation":{"chicago":"Phan, Duc T, Paul Falthansl-Scheinecker, Umang Mishra, W. M. Strickland, D. Langone, J. Shabani, and Andrew P Higginbotham. “Gate-Tunable Superconductor-Semiconductor Parametric Amplifier.” Physical Review Applied. American Physical Society, 2023. https://doi.org/10.1103/PhysRevApplied.19.064032.","mla":"Phan, Duc T., et al. “Gate-Tunable Superconductor-Semiconductor Parametric Amplifier.” Physical Review Applied, vol. 19, no. 6, 064032, American Physical Society, 2023, doi:10.1103/PhysRevApplied.19.064032.","short":"D.T. Phan, P. Falthansl-Scheinecker, U. Mishra, W.M. Strickland, D. Langone, J. Shabani, A.P. Higginbotham, Physical Review Applied 19 (2023).","ista":"Phan DT, Falthansl-Scheinecker P, Mishra U, Strickland WM, Langone D, Shabani J, Higginbotham AP. 2023. Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. 19(6), 064032.","ama":"Phan DT, Falthansl-Scheinecker P, Mishra U, et al. Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. 2023;19(6). doi:10.1103/PhysRevApplied.19.064032","apa":"Phan, D. T., Falthansl-Scheinecker, P., Mishra, U., Strickland, W. M., Langone, D., Shabani, J., & Higginbotham, A. P. (2023). Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. American Physical Society. https://doi.org/10.1103/PhysRevApplied.19.064032","ieee":"D. T. Phan et al., “Gate-tunable superconductor-semiconductor parametric amplifier,” Physical Review Applied, vol. 19, no. 6. American Physical Society, 2023."},"year":"2023","acknowledgement":"We thank Shyam Shankar for helpful feedback on the manuscript. We gratefully acknowledge the support of the ISTA nanofabrication facility, the Miba Machine Shop, and the eMachine Shop. The NYU team acknowledges support from Army Research Office Grant No. W911NF2110303.","isi":1,"day":"09","arxiv":1,"das_tickbox":"1","oa_version":"Preprint","researchdata_availability":"yes (supplementary data)","_id":"13264","status":"public","intvolume":" 19","issue":"6","external_id":{"arxiv":["2206.05746"],"isi":["001012022600004"]},"dataavailabilitystatement":"The raw data and the plotting code are available in the Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevApplied.19.064032. Further data are available upon reasonable request.","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"abstract":[{"text":"We build a parametric amplifier with a Josephson field-effect transistor (JoFET) as the active element. The resonant frequency of the device is field-effect tunable over a range of 2 GHz. The JoFET amplifier has 20 dB of gain, 4 MHz of instantaneous bandwidth, and a 1-dB compression point of -125.5 dBm when operated at a fixed resonance frequency.\r\n\r\n","lang":"eng"}],"user_id":"68b8ca59-c5b3-11ee-8790-cd641c68093d","date_updated":"2026-07-08T08:38:44Z","fulldoi":"https://doi.org/10.1103/PhysRevApplied.19.064032","article_type":"original","date_published":"2023-06-09T00:00:00Z"},{"intvolume":" 19","file":[{"relation":"main_file","access_level":"open_access","checksum":"1fc86d71bfbf836e221c1e925343adc5","content_type":"application/pdf","date_updated":"2024-01-29T11:25:38Z","creator":"dernst","file_id":"14899","success":1,"file_name":"2023_NaturePhysics_Mukhopadhyay.pdf","date_created":"2024-01-29T11:25:38Z","file_size":1977706}],"external_id":{"isi":["001054563800006"]},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"publisher":"Springer Nature","citation":{"chicago":"Mukhopadhyay, Soham, Jorden L Senior, Jaime Saez Mollejo, Denise Puglia, Martin Zemlicka, Johannes M Fink, and Andrew P Higginbotham. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” Nature Physics. Springer Nature, 2023. https://doi.org/10.1038/s41567-023-02161-w.","short":"S. Mukhopadhyay, J.L. Senior, J. Saez Mollejo, D. Puglia, M. Zemlicka, J.M. Fink, A.P. Higginbotham, Nature Physics 19 (2023) 1630–1635.","mla":"Mukhopadhyay, Soham, et al. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” Nature Physics, vol. 19, Springer Nature, 2023, pp. 1630–35, doi:10.1038/s41567-023-02161-w.","ista":"Mukhopadhyay S, Senior JL, Saez Mollejo J, Puglia D, Zemlicka M, Fink JM, Higginbotham AP. 2023. Superconductivity from a melted insulator in Josephson junction arrays. Nature Physics. 19, 1630–1635.","ama":"Mukhopadhyay S, Senior JL, Saez Mollejo J, et al. Superconductivity from a melted insulator in Josephson junction arrays. Nature Physics. 2023;19:1630-1635. doi:10.1038/s41567-023-02161-w","apa":"Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M., Fink, J. M., & Higginbotham, A. P. (2023). Superconductivity from a melted insulator in Josephson junction arrays. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-023-02161-w","ieee":"S. Mukhopadhyay et al., “Superconductivity from a melted insulator in Josephson junction arrays,” Nature Physics, vol. 19. Springer Nature, pp. 1630–1635, 2023."},"acknowledgement":"We thank D. Haviland, J. Pekola, C. Ciuti, A. Bubis and A. Shnirman for helpful feedback on the paper. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the Nanofabrication Facility. Work supported by the Austrian FWF grant P33692-N (S.M., J.S. and A.P.H.), the European Union’s Horizon 2020 Research and Innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (J.S.) and a NOMIS foundation research grant (J.M.F. and A.P.H.).","year":"2023","isi":1,"day":"01","oa_version":"Published Version","_id":"14032","status":"public","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"keyword":["General Physics and Astronomy"],"fulldoi":"https://doi.org/10.1038/s41567-023-02161-w","article_type":"original","date_published":"2023-11-01T00:00:00Z","has_accepted_license":"1","ddc":["530"],"ec_funded":1,"file_date_updated":"2024-01-29T11:25:38Z","abstract":[{"text":"Arrays of Josephson junctions are governed by a competition between superconductivity and repulsive Coulomb interactions, and are expected to exhibit diverging low-temperature resistance when interactions exceed a critical level. Here we report a study of the transport and microwave response of Josephson arrays with interactions exceeding this level. Contrary to expectations, we observe that the array resistance drops dramatically as the temperature is decreased—reminiscent of superconducting behaviour—and then saturates at low temperature. Applying a magnetic field, we eventually observe a transition to a highly resistive regime. These observations can be understood within a theoretical picture that accounts for the effect of thermal fluctuations on the insulating phase. On the basis of the agreement between experiment and theory, we suggest that apparent superconductivity in our Josephson arrays arises from melting the zero-temperature insulator.","lang":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2026-10-26T23:30:57Z","quality_controlled":"1","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"17881"}]},"project":[{"grant_number":"P33692","name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931"},{"grant_number":"754411","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"}],"article_processing_charge":"Yes (in subscription journal)","date_created":"2023-08-11T07:41:17Z","month":"11","publication_status":"published","volume":19,"language":[{"iso":"eng"}],"department":[{"_id":"GradSch"},{"_id":"AnHi"},{"_id":"JoFi"}],"page":"1630-1635","type":"journal_article","doi":"10.1038/s41567-023-02161-w","title":"Superconductivity from a melted insulator in Josephson junction arrays","oa":1,"publication_identifier":{"eissn":["1745-2481"],"issn":["1745-2473"]},"author":[{"last_name":"Mukhopadhyay","id":"FDE60288-A89D-11E9-947F-1AF6E5697425","full_name":"Mukhopadhyay, Soham","orcid":"0000-0001-5263-5559","first_name":"Soham"},{"first_name":"Jorden L","orcid":"0000-0002-0672-9295","id":"5479D234-2D30-11EA-89CC-40953DDC885E","last_name":"Senior","full_name":"Senior, Jorden L"},{"last_name":"Saez Mollejo","id":"e0390f72-f6e0-11ea-865d-862393336714","full_name":"Saez Mollejo, Jaime","first_name":"Jaime"},{"orcid":"0000-0003-1144-2763","first_name":"Denise","full_name":"Puglia, Denise","id":"4D495994-AE37-11E9-AC72-31CAE5697425","last_name":"Puglia"},{"first_name":"Martin","orcid":"0009-0005-0878-3032","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","full_name":"Zemlicka, Martin"},{"full_name":"Fink, Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M"},{"full_name":"Higginbotham, Andrew P","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","first_name":"Andrew P","orcid":"0000-0003-2607-2363"}],"publication":"Nature Physics","scopus_import":"1","corr_author":"1"},{"abstract":[{"lang":"eng","text":"Superconductor-semiconductor hybrid devices are at the heart of several proposed approaches to quantum information processing, but their basic properties remain to be understood. We embed a twodimensional Al-InAs hybrid system in a resonant microwave circuit, probing the breakdown of superconductivity due to an applied magnetic field. We find a fingerprint from the two-component nature of the hybrid system, and quantitatively compare with a theory that includes the contribution of intraband p±ip pairing in the InAs, as well as the emergence of Bogoliubov-Fermi surfaces due to magnetic field. Separately resolving the Al and InAs contributions allows us to determine the carrier density and mobility in the InAs."}],"ec_funded":1,"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","date_updated":"2026-04-07T13:25:51Z","keyword":["General Physics and Astronomy"],"article_type":"original","fulldoi":"https://doi.org/10.1103/physrevlett.128.107701","date_published":"2022-03-11T00:00:00Z","publisher":"American Physical Society","acknowledgement":"M. S. acknowledges useful discussions with A. Levchenko and P. A. Lee, and E. Berg. This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility. J. S. and A. G. acknowledge funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411.W. M. Hatefipour, W. M. Strickland and J. Shabani acknowledge funding from Office of Naval Research Award No. N00014-21-1-2450.","year":"2022","citation":{"ama":"Phan DT, Senior JL, Ghazaryan A, et al. Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. Physical Review Letters. 2022;128(10). doi:10.1103/physrevlett.128.107701","ista":"Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn M, Higginbotham AP. 2022. Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. Physical Review Letters. 128(10), 107701.","apa":"Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M., Shabani, J., … Higginbotham, A. P. (2022). Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.128.107701","ieee":"D. T. Phan et al., “Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit,” Physical Review Letters, vol. 128, no. 10. American Physical Society, 2022.","chicago":"Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland, J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Detecting Induced P±ip Pairing at the Al-InAs Interface with a Quantum Microwave Circuit.” Physical Review Letters. American Physical Society, 2022. https://doi.org/10.1103/physrevlett.128.107701.","short":"D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J. Shabani, M. Serbyn, A.P. Higginbotham, Physical Review Letters 128 (2022).","mla":"Phan, Duc T., et al. “Detecting Induced P±ip Pairing at the Al-InAs Interface with a Quantum Microwave Circuit.” Physical Review Letters, vol. 128, no. 10, 107701, American Physical Society, 2022, doi:10.1103/physrevlett.128.107701."},"isi":1,"day":"11","arxiv":1,"oa_version":"Preprint","_id":"10851","status":"public","intvolume":" 128","issue":"10","external_id":{"arxiv":["2107.03695"],"isi":["000771391100002"],"pmid":[" 35333085"]},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"author":[{"first_name":"Duc T","full_name":"Phan, Duc T","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","last_name":"Phan"},{"last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E","full_name":"Senior, Jorden L","orcid":"0000-0002-0672-9295","first_name":"Jorden L"},{"last_name":"Ghazaryan","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","full_name":"Ghazaryan, Areg","orcid":"0000-0001-9666-3543","first_name":"Areg"},{"last_name":"Hatefipour","full_name":"Hatefipour, M.","first_name":"M."},{"full_name":"Strickland, W. M.","last_name":"Strickland","first_name":"W. M."},{"full_name":"Shabani, J.","last_name":"Shabani","first_name":"J."},{"first_name":"Maksym","orcid":"0000-0002-2399-5827","full_name":"Serbyn, Maksym","id":"47809E7E-F248-11E8-B48F-1D18A9856A87","last_name":"Serbyn"},{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","full_name":"Higginbotham, Andrew P"}],"publication":"Physical Review Letters","scopus_import":"1","corr_author":"1","article_number":"107701","type":"journal_article","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2107.03695","open_access":"1"}],"doi":"10.1103/physrevlett.128.107701","oa":1,"title":"Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave circuit","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"pmid":1,"month":"03","publication_status":"published","language":[{"iso":"eng"}],"volume":128,"department":[{"_id":"MaSe"},{"_id":"AnHi"}],"quality_controlled":"1","related_material":{"record":[{"id":"10029","relation":"earlier_version","status":"public"},{"status":"public","relation":"dissertation_contains","id":"14547"}],"link":[{"relation":"press_release","description":"News on ISTA Website","url":"https://ista.ac.at/en/news/characterizing-super-semi-sandwiches-for-quantum-computing/"}]},"project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411"}],"article_processing_charge":"No","date_created":"2022-03-17T11:37:47Z"},{"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","abstract":[{"text":"Superconducting devices ubiquitously have an excess of broken Cooper pairs, which can hamper their performance. It is widely believed that external radiation is responsible but a study now suggests there must be an additional, unknown source.","lang":"eng"}],"date_updated":"2024-10-09T21:01:21Z","date_published":"2022-02-01T00:00:00Z","keyword":["superconducting devices","superconducting properties and materials"],"fulldoi":"https://doi.org/10.1038/s41567-021-01459-x","article_type":"letter_note","isi":1,"day":"01","publisher":"Springer Nature","year":"2022","citation":{"chicago":"Higginbotham, Andrew P. “A Secret Source.” Nature Physics. Springer Nature, 2022. https://doi.org/10.1038/s41567-021-01459-x.","short":"A.P. Higginbotham, Nature Physics 18 (2022) 126.","mla":"Higginbotham, Andrew P. “A Secret Source.” Nature Physics, vol. 18, Springer Nature, 2022, p. 126, doi:10.1038/s41567-021-01459-x.","ama":"Higginbotham AP. A secret source. Nature Physics. 2022;18:126. doi:10.1038/s41567-021-01459-x","ista":"Higginbotham AP. 2022. A secret source. Nature Physics. 18, 126.","apa":"Higginbotham, A. P. (2022). A secret source. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-021-01459-x","ieee":"A. P. Higginbotham, “A secret source,” Nature Physics, vol. 18. Springer Nature, p. 126, 2022."},"_id":"10589","status":"public","oa_version":"None","external_id":{"isi":["000733431000007"]},"intvolume":" 18","publication":"Nature Physics","author":[{"first_name":"Andrew P","orcid":"0000-0003-2607-2363","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","last_name":"Higginbotham","full_name":"Higginbotham, Andrew P"}],"corr_author":"1","scopus_import":"1","title":"A secret source","publication_identifier":{"eissn":["1745-2481"],"issn":["1745-2473"]},"type":"journal_article","doi":"10.1038/s41567-021-01459-x","month":"02","page":"126","publication_status":"published","volume":18,"department":[{"_id":"AnHi"}],"language":[{"iso":"eng"}],"quality_controlled":"1","article_processing_charge":"No","date_created":"2022-01-02T23:01:35Z"}]