[{"month":"10","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","project":[{"_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits","call_identifier":"H2020","grant_number":"758053"},{"grant_number":"101089099","name":"Cavity Quantum Electro Optics: Microwave photonics with nonclassical states","_id":"bdadfa0d-d553-11ed-ba76-fb85edbd456a"},{"name":"Quantum Local Area Networks with Superconducting Qubits","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","grant_number":"899354","call_identifier":"H2020"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"},{"name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","grant_number":"F07105"}],"publication_status":"draft","abstract":[{"lang":"eng","text":"The rapid development of superconducting quantum hardware is expected to run into significant I/O restrictions due to the need for large-scale error correction in a cryogenic environment. Classical data centers rely on fiber-optic interconnects to remove similar networking bottlenecks and to allow for reconfigurable, software-defined infrastructures. In the same spirit, ultra-cold electro-optic links have been proposed and used to generate qubit control signals, or to replace cryogenic readout electronics. So far, the latter suffered from either low efficiency, low bandwidth and the need for additional microwave drives, or breaking of Cooper pairs and qubit states. In this work we realize electro-optic microwave photonics at millikelvin temperatures to implement a radio-over-fiber qubit readout that does not require any active or passive cryogenic microwave equipment. We demonstrate all-optical single-shot-readout by means of the Jaynes-Cummings nonlinearity in a circulator-free readout scheme. Importantly, we do not observe any direct radiation impact on the qubit state as verified with high-fidelity quantum-non-demolition measurements despite the absence of shielding elements. This compatibility between superconducting circuits and telecom wavelength light is not only a prerequisite to establish modular quantum networks, it is also relevant for multiplexed readout of superconducting photon detectors and classical superconducting logic. Moreover, this experiment showcases the potential of electro-optic radiometry in harsh environments - an electronics-free sensing principle that extends into the THz regime with applications in radio astronomy, planetary missions and earth observation."}],"oa_version":"Preprint","doi":"10.48550/ARXIV.2310.16817","day":"25","publication":"arXiv","OA_place":"repository","title":"All-optical single-shot readout of a superconducting qubit","status":"public","type":"preprint","related_material":{"record":[{"id":"19073","status":"public","relation":"later_version"},{"relation":"dissertation_contains","status":"public","id":"18871"}]},"acknowledgement":"We thank F. Hassani and M. Zemlicka for assistance\r\nwith qubit design and high power readout respectively,\r\nand P. Winkel and I. Pop at KIT for providing the JPA.\r\nThis work was supported by the European Research\r\nCouncil under grant agreement no. 758053 (ERC StG\r\nQUNNECT) and no. 101089099 (ERC CoG cQEO), the\r\nEuropean Union’s Horizon 2020 research and innovation\r\nprogram under grant agreement no. 899354 (FETopen\r\nSuperQuLAN) and the Austrian Science Fund (FWF)\r\nthrough BeyondC (grant no. F7105). L.Q. acknowledges\r\ngenerous support from the ISTFELLOW programme\r\nand G.A. is the recipient of a DOC fellowship of the\r\nAustrian Academy of Sciences at IST Austria.","date_published":"2023-10-25T00:00:00Z","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2310.16817","open_access":"1"}],"year":"2023","_id":"18953","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_created":"2025-01-29T11:11:34Z","external_id":{"arxiv":["2310.16817"]},"corr_author":"1","fulldoi":"https://doi.org/10.48550/ARXIV.2310.16817","citation":{"ieee":"G. M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, and J. M. Fink, “All-optical single-shot readout of a superconducting qubit,” <i>arXiv</i>. .","ista":"Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. All-optical single-shot readout of a superconducting qubit. arXiv, <a href=\"https://doi.org/10.48550/ARXIV.2310.16817\">10.48550/ARXIV.2310.16817</a>.","apa":"Arnold, G. M., Werner, T., Sahu, R., Kapoor, L., Qiu, L., &#38; Fink, J. M. (n.d.). All-optical single-shot readout of a superconducting qubit. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2310.16817\">https://doi.org/10.48550/ARXIV.2310.16817</a>","ama":"Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. All-optical single-shot readout of a superconducting qubit. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/ARXIV.2310.16817\">10.48550/ARXIV.2310.16817</a>","chicago":"Arnold, Georg M, Thomas Werner, Rishabh Sahu, Lucky Kapoor, Liu Qiu, and Johannes M Fink. “All-Optical Single-Shot Readout of a Superconducting Qubit.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/ARXIV.2310.16817\">https://doi.org/10.48550/ARXIV.2310.16817</a>.","short":"G.M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, J.M. Fink, ArXiv (n.d.).","mla":"Arnold, Georg M., et al. “All-Optical Single-Shot Readout of a Superconducting Qubit.” <i>ArXiv</i>, doi:<a href=\"https://doi.org/10.48550/ARXIV.2310.16817\">10.48550/ARXIV.2310.16817</a>."},"author":[{"first_name":"Georg M","full_name":"Arnold, Georg M","orcid":"0000-0003-1397-7876","id":"3770C838-F248-11E8-B48F-1D18A9856A87","last_name":"Arnold"},{"id":"1fcd8497-dba3-11ea-a45e-c6fbd715f7c7","first_name":"Thomas","full_name":"Werner, Thomas","orcid":"0009-0001-2346-5236","last_name":"Werner"},{"last_name":"Sahu","orcid":"0000-0001-6264-2162","first_name":"Rishabh","full_name":"Sahu, Rishabh","id":"47D26E34-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0001-8319-2148","full_name":"Kapoor, Lucky","first_name":"Lucky","id":"84b9700b-15b2-11ec-abd3-831089e67615","last_name":"Kapoor"},{"orcid":"0000-0003-4345-4267","full_name":"Qiu, Liu","first_name":"Liu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","last_name":"Qiu"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","last_name":"Fink"}],"ec_funded":1,"oa":1,"arxiv":1,"department":[{"_id":"JoFi"}],"date_updated":"2026-11-08T23:30:30Z","language":[{"iso":"eng"}]},{"ddc":["530"],"author":[{"orcid":"0000-0001-5263-5559","first_name":"Soham","full_name":"Mukhopadhyay, Soham","id":"FDE60288-A89D-11E9-947F-1AF6E5697425","last_name":"Mukhopadhyay"},{"last_name":"Senior","id":"5479D234-2D30-11EA-89CC-40953DDC885E","orcid":"0000-0002-0672-9295","first_name":"Jorden L","full_name":"Senior, Jorden L"},{"last_name":"Saez Mollejo","first_name":"Jaime","full_name":"Saez Mollejo, Jaime","id":"e0390f72-f6e0-11ea-865d-862393336714"},{"first_name":"Denise","full_name":"Puglia, Denise","orcid":"0000-0003-1144-2763","id":"4D495994-AE37-11E9-AC72-31CAE5697425","last_name":"Puglia"},{"last_name":"Zemlicka","orcid":"0009-0005-0878-3032","full_name":"Zemlicka, Martin","first_name":"Martin","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"},{"id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2607-2363","first_name":"Andrew P","full_name":"Higginbotham, Andrew P","last_name":"Higginbotham"}],"oa":1,"ec_funded":1,"department":[{"_id":"GradSch"},{"_id":"AnHi"},{"_id":"JoFi"}],"date_updated":"2026-11-08T23:31:07Z","language":[{"iso":"eng"}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"publisher":"Springer Nature","date_created":"2023-08-11T07:41:17Z","citation":{"mla":"Mukhopadhyay, Soham, et al. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” <i>Nature Physics</i>, vol. 19, Springer Nature, 2023, pp. 1630–35, doi:<a href=\"https://doi.org/10.1038/s41567-023-02161-w\">10.1038/s41567-023-02161-w</a>.","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.” <i>Nature Physics</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1038/s41567-023-02161-w\">https://doi.org/10.1038/s41567-023-02161-w</a>.","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.","apa":"Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M., Fink, J. M., &#38; Higginbotham, A. P. (2023). Superconductivity from a melted insulator in Josephson junction arrays. <i>Nature Physics</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41567-023-02161-w\">https://doi.org/10.1038/s41567-023-02161-w</a>","ama":"Mukhopadhyay S, Senior JL, Saez Mollejo J, et al. Superconductivity from a melted insulator in Josephson junction arrays. <i>Nature Physics</i>. 2023;19:1630-1635. doi:<a href=\"https://doi.org/10.1038/s41567-023-02161-w\">10.1038/s41567-023-02161-w</a>","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.","ieee":"S. Mukhopadhyay <i>et al.</i>, “Superconductivity from a melted insulator in Josephson junction arrays,” <i>Nature Physics</i>, vol. 19. Springer Nature, pp. 1630–1635, 2023."},"fulldoi":"https://doi.org/10.1038/s41567-023-02161-w","page":"1630-1635","external_id":{"isi":["001054563800006"]},"corr_author":"1","intvolume":"        19","article_type":"original","isi":1,"scopus_import":"1","title":"Superconductivity from a melted insulator in Josephson junction arrays","keyword":["General Physics and Astronomy"],"date_published":"2023-11-01T00:00:00Z","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.).","related_material":{"record":[{"relation":"dissertation_contains","id":"17881","status":"public"}]},"type":"journal_article","status":"public","_id":"14032","year":"2023","file":[{"checksum":"1fc86d71bfbf836e221c1e925343adc5","date_updated":"2024-01-29T11:25:38Z","file_name":"2023_NaturePhysics_Mukhopadhyay.pdf","file_id":"14899","file_size":1977706,"access_level":"open_access","creator":"dernst","content_type":"application/pdf","date_created":"2024-01-29T11:25:38Z","success":1,"relation":"main_file"}],"has_accepted_license":"1","article_processing_charge":"Yes (in subscription journal)","publication_identifier":{"issn":["1745-2473"],"eissn":["1745-2481"]},"month":"11","quality_controlled":"1","publication_status":"published","project":[{"grant_number":"P33692","name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931"},{"call_identifier":"H2020","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships"},{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Published Version","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"}],"volume":19,"publication":"Nature Physics","file_date_updated":"2024-01-29T11:25:38Z","doi":"10.1038/s41567-023-02161-w","day":"01"},{"ddc":["530"],"author":[{"last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","full_name":"Redchenko, Elena","first_name":"Elena"},{"first_name":"Alexander V.","full_name":"Poshakinskiy, Alexander V.","last_name":"Poshakinskiy"},{"last_name":"Sett","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","first_name":"Riya","full_name":"Sett, Riya","orcid":"0000-0001-7641-8348"},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0005-0878-3032","full_name":"Zemlicka, Martin","first_name":"Martin","last_name":"Zemlicka"},{"last_name":"Poddubny","full_name":"Poddubny, Alexander N.","first_name":"Alexander N."},{"last_name":"Fink","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"oa":1,"arxiv":1,"ec_funded":1,"date_updated":"2026-11-08T23:31:15Z","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"publisher":"Springer Nature","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"date_created":"2023-06-04T22:01:02Z","fulldoi":"https://doi.org/10.1038/s41467-023-38761-6","citation":{"mla":"Redchenko, Elena, et al. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” <i>Nature Communications</i>, vol. 14, 2998, Springer Nature, 2023, doi:<a href=\"https://doi.org/10.1038/s41467-023-38761-6\">10.1038/s41467-023-38761-6</a>.","chicago":"Redchenko, Elena, Alexander V. Poshakinskiy, Riya Sett, Martin Zemlicka, Alexander N. Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” <i>Nature Communications</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1038/s41467-023-38761-6\">https://doi.org/10.1038/s41467-023-38761-6</a>.","short":"E. Redchenko, A.V. Poshakinskiy, R. Sett, M. Zemlicka, A.N. Poddubny, J.M. Fink, Nature Communications 14 (2023).","apa":"Redchenko, E., Poshakinskiy, A. V., Sett, R., Zemlicka, M., Poddubny, A. N., &#38; Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting qubits. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-023-38761-6\">https://doi.org/10.1038/s41467-023-38761-6</a>","ama":"Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. Tunable directional photon scattering from a pair of superconducting qubits. <i>Nature Communications</i>. 2023;14. doi:<a href=\"https://doi.org/10.1038/s41467-023-38761-6\">10.1038/s41467-023-38761-6</a>","ieee":"E. Redchenko, A. V. Poshakinskiy, R. Sett, M. Zemlicka, A. N. Poddubny, and J. M. Fink, “Tunable directional photon scattering from a pair of superconducting qubits,” <i>Nature Communications</i>, vol. 14. Springer Nature, 2023.","ista":"Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. 2023. Tunable directional photon scattering from a pair of superconducting qubits. Nature Communications. 14, 2998."},"external_id":{"pmid":["37225689"],"arxiv":["2205.03293"],"isi":["001001099700002"]},"corr_author":"1","intvolume":"        14","isi":1,"article_type":"original","scopus_import":"1","title":"Tunable directional photon scattering from a pair of superconducting qubits","date_published":"2023-05-24T00:00:00Z","acknowledgement":"The authors thank W.D. Oliver for discussions, L. Drmic and P. Zielinski for software development, and the MIBA workshop and the IST nanofabrication facility for technical support. This work was supported by the Austrian Science Fund (FWF) through BeyondC (F7105) and IST Austria. E.R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. J.M.F. and M.Z. acknowledge support from the European Research Council under grant agreement No 758053 (ERC StG QUNNECT) and a NOMIS foundation research grant. The work of A.N.P. and A.V.P. has been supported by the Russian Science Foundation under the grant No 20-12-00194.","status":"public","related_material":{"record":[{"status":"public","id":"13124","relation":"research_data"},{"relation":"dissertation_contains","id":"19533","status":"public"}]},"type":"journal_article","year":"2023","file":[{"date_updated":"2023-06-06T07:31:20Z","file_id":"13123","checksum":"a857df40f0882859c48a1ff1e2001ec2","file_name":"2023_NaturePhysics_Redchenko.pdf","file_size":1654389,"access_level":"open_access","creator":"dernst","content_type":"application/pdf","date_created":"2023-06-06T07:31:20Z","success":1,"relation":"main_file"}],"article_number":"2998","_id":"13117","publication_identifier":{"eissn":["2041-1723"]},"article_processing_charge":"No","has_accepted_license":"1","quality_controlled":"1","month":"05","project":[{"call_identifier":"H2020","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"_id":"26B354CA-B435-11E9-9278-68D0E5697425","name":"Controllable Collective States of Superconducting Qubit Ensembles"},{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"},{"_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","grant_number":"F07105"}],"publication_status":"published","pmid":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Published Version","abstract":[{"lang":"eng","text":"The ability to control the direction of scattered light is crucial to provide flexibility and scalability for a wide range of on-chip applications, such as integrated photonics, quantum information processing, and nonlinear optics. Tunable directionality can be achieved by applying external magnetic fields that modify optical selection rules, by using nonlinear effects, or interactions with vibrations. However, these approaches are less suitable to control microwave photon propagation inside integrated superconducting quantum devices. Here, we demonstrate on-demand tunable directional scattering based on two periodically modulated transmon qubits coupled to a transmission line at a fixed distance. By changing the relative phase between the modulation tones, we realize unidirectional forward or backward photon scattering. Such an in-situ switchable mirror represents a versatile tool for intra- and inter-chip microwave photonic processors. In the future, a lattice of qubits can be used to realize topological circuits that exhibit strong nonreciprocity or chirality."}],"volume":14,"file_date_updated":"2023-06-06T07:31:20Z","publication":"Nature Communications","day":"24","doi":"10.1038/s41467-023-38761-6"},{"year":"2022","article_number":"034032","_id":"10940","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2111.01115","open_access":"1"}],"date_published":"2022-03-11T00:00:00Z","acknowledgement":"We would like to thank Ida Milow for her internship in the laboratory and contributions to our code base. We thank T. Zent and L. Hamdan for technical assistance, and D. Fan for help with setting up the aluminum evaporator. We thank A. Salari, M. Rößler, S. Barzanjeh, M. Zemlicka, F. Hassani, and M. Peruzzo for contributions in the early stages of the experiments. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 741121) and was also funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under CRC 1238 – 277146847 (Subproject B01), as well as under Germany’s Excellence Strategy – Cluster of Excellence Matter and Light for Quantum Computing (ML4Q), EXC 2004/1\r\n– 390534769.","status":"public","type":"journal_article","scopus_import":"1","title":"Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T","publication":"Physical Review Applied","volume":17,"issue":"3","day":"11","doi":"10.1103/PhysRevApplied.17.034032","oa_version":"Preprint","abstract":[{"text":"Magnetic-field-resilient superconducting circuits enable sensing applications and hybrid quantum computing architectures involving spin or topological qubits and electromechanical elements, as well as studying flux noise and quasiparticle loss. We investigate the effect of in-plane magnetic fields up to 1 T on the spectrum and coherence times of thin-film three-dimensional aluminum transmons. Using a copper cavity, unaffected by strong magnetic fields, we can probe solely the effect of magnetic fields on the transmons. We present data on a single-junction and a superconducting-quantum-interference-device (SQUID) transmon that are cooled down in the same cavity. As expected, the transmon frequencies decrease with increasing field, due to suppression of the superconducting gap and a geometric Fraunhofer-like contribution. Nevertheless, the thin-film transmons show strong magnetic field resilience: both transmons display microsecond coherence up to at least 0.65 T, and T1 remains above 1μs over the entire measurable range. SQUID spectroscopy is feasible up to 1 T, the limit of our magnet. We conclude that thin-film aluminum Josephson junctions are suitable hardware for superconducting circuits in the high-magnetic-field regime.","lang":"eng"}],"publication_status":"published","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_identifier":{"eissn":["2331-7019"]},"article_processing_charge":"No","quality_controlled":"1","month":"03","language":[{"iso":"eng"}],"date_updated":"2023-08-03T06:23:58Z","department":[{"_id":"JoFi"}],"arxiv":1,"oa":1,"author":[{"last_name":"Krause","first_name":"J.","full_name":"Krause, J."},{"first_name":"C.","full_name":"Dickel, C.","last_name":"Dickel"},{"last_name":"Vaal","full_name":"Vaal, E.","first_name":"E."},{"last_name":"Vielmetter","full_name":"Vielmetter, M.","first_name":"M."},{"full_name":"Feng, J.","first_name":"J.","last_name":"Feng"},{"last_name":"Bounds","first_name":"R.","full_name":"Bounds, R."},{"full_name":"Catelani, G.","first_name":"G.","last_name":"Catelani"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"},{"full_name":"Ando, Yoichi","first_name":"Yoichi","last_name":"Ando"}],"intvolume":"        17","isi":1,"article_type":"original","fulldoi":"https://doi.org/10.1103/PhysRevApplied.17.034032","citation":{"mla":"Krause, J., et al. “Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlOx/Al Josephson Junctions Approaching 1 T.” <i>Physical Review Applied</i>, vol. 17, no. 3, 034032, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.17.034032\">10.1103/PhysRevApplied.17.034032</a>.","chicago":"Krause, J., C. Dickel, E. Vaal, M. Vielmetter, J. Feng, R. Bounds, G. Catelani, Johannes M Fink, and Yoichi Ando. “Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlOx/Al Josephson Junctions Approaching 1 T.” <i>Physical Review Applied</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevApplied.17.034032\">https://doi.org/10.1103/PhysRevApplied.17.034032</a>.","short":"J. Krause, C. Dickel, E. Vaal, M. Vielmetter, J. Feng, R. Bounds, G. Catelani, J.M. Fink, Y. Ando, Physical Review Applied 17 (2022).","ama":"Krause J, Dickel C, Vaal E, et al. Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T. <i>Physical Review Applied</i>. 2022;17(3). doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.17.034032\">10.1103/PhysRevApplied.17.034032</a>","apa":"Krause, J., Dickel, C., Vaal, E., Vielmetter, M., Feng, J., Bounds, R., … Ando, Y. (2022). Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T. <i>Physical Review Applied</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevApplied.17.034032\">https://doi.org/10.1103/PhysRevApplied.17.034032</a>","ista":"Krause J, Dickel C, Vaal E, Vielmetter M, Feng J, Bounds R, Catelani G, Fink JM, Ando Y. 2022. Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T. Physical Review Applied. 17(3), 034032.","ieee":"J. Krause <i>et al.</i>, “Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T,” <i>Physical Review Applied</i>, vol. 17, no. 3. American Physical Society, 2022."},"external_id":{"arxiv":["2111.01115"],"isi":["000770371400003"]},"publisher":"American Physical Society","date_created":"2022-04-03T22:01:43Z"},{"language":[{"iso":"eng"}],"date_updated":"2026-04-02T12:30:47Z","department":[{"_id":"JoFi"}],"oa":1,"ec_funded":1,"ddc":["530"],"author":[{"id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","first_name":"Liu","full_name":"Qiu, Liu","orcid":"0000-0003-4345-4267","last_name":"Qiu"},{"last_name":"Huang","first_name":"Guanhao","full_name":"Huang, Guanhao"},{"last_name":"Shomroni","first_name":"Itay","full_name":"Shomroni, Itay"},{"last_name":"Pan","first_name":"Jiahe","full_name":"Pan, Jiahe"},{"last_name":"Seidler","first_name":"Paul","full_name":"Seidler, Paul"},{"full_name":"Kippenberg, Tobias J.","first_name":"Tobias J.","last_name":"Kippenberg"}],"intvolume":"         3","isi":1,"article_type":"original","fulldoi":"https://doi.org/10.1103/PRXQuantum.3.020309","citation":{"apa":"Qiu, L., Huang, G., Shomroni, I., Pan, J., Seidler, P., &#38; Kippenberg, T. J. (2022). Dissipative quantum feedback in measurements using a parametrically coupled microcavity. <i>PRX Quantum</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PRXQuantum.3.020309\">https://doi.org/10.1103/PRXQuantum.3.020309</a>","ama":"Qiu L, Huang G, Shomroni I, Pan J, Seidler P, Kippenberg TJ. Dissipative quantum feedback in measurements using a parametrically coupled microcavity. <i>PRX Quantum</i>. 2022;3(2). doi:<a href=\"https://doi.org/10.1103/PRXQuantum.3.020309\">10.1103/PRXQuantum.3.020309</a>","ieee":"L. Qiu, G. Huang, I. Shomroni, J. Pan, P. Seidler, and T. J. Kippenberg, “Dissipative quantum feedback in measurements using a parametrically coupled microcavity,” <i>PRX Quantum</i>, vol. 3, no. 2. American Physical Society, 2022.","ista":"Qiu L, Huang G, Shomroni I, Pan J, Seidler P, Kippenberg TJ. 2022. Dissipative quantum feedback in measurements using a parametrically coupled microcavity. PRX Quantum. 3(2), 020309.","mla":"Qiu, Liu, et al. “Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity.” <i>PRX Quantum</i>, vol. 3, no. 2, 020309, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PRXQuantum.3.020309\">10.1103/PRXQuantum.3.020309</a>.","chicago":"Qiu, Liu, Guanhao Huang, Itay Shomroni, Jiahe Pan, Paul Seidler, and Tobias J. Kippenberg. “Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity.” <i>PRX Quantum</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PRXQuantum.3.020309\">https://doi.org/10.1103/PRXQuantum.3.020309</a>.","short":"L. Qiu, G. Huang, I. Shomroni, J. Pan, P. Seidler, T.J. Kippenberg, PRX Quantum 3 (2022)."},"external_id":{"isi":["000789316700001"]},"publisher":"American Physical Society","date_created":"2022-05-08T22:01:43Z","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"relation":"main_file","success":1,"date_created":"2022-05-09T07:10:51Z","content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_size":1657177,"date_updated":"2022-05-09T07:10:51Z","file_name":"2022_PRXQuantum_Qiu.pdf","checksum":"35ff9ddf1d54f64432e435b660edaeb6","file_id":"11358"}],"year":"2022","article_number":"020309","_id":"11353","date_published":"2022-04-13T00:00:00Z","acknowledgement":"L.Q. acknowledges fruitful discussions with D. Vitali, R. Schnabel, P.K. Lam, A. Nunnenkamp, and D. Malz. This work is supported by the EUH2020 research and innovation programme under Grant No. 732894 (FET Proactive HOT), and the European Research Council through \r\nGrant No. 835329 (ExCOM-cCEO). This work was further supported by Swiss National Science Foundation under Grant Agreements No. 185870 (Ambizione) and No. 204927. Samples were fabricated at the Center of MicroNanoTechnology (CMi) at EPFL and the Binnig and Rohrer Nanotechnology Center at IBM Research-Zurich.","status":"public","type":"journal_article","scopus_import":"1","title":"Dissipative quantum feedback in measurements using a parametrically coupled microcavity","file_date_updated":"2022-05-09T07:10:51Z","volume":3,"publication":"PRX Quantum","issue":"2","doi":"10.1103/PRXQuantum.3.020309","day":"13","oa_version":"Published Version","abstract":[{"lang":"eng","text":"Micro- and nanoscale optical or microwave cavities are used in a wide range of classical applications and quantum science experiments, ranging from precision measurements, laser technologies to quantum control of mechanical motion. The dissipative photon loss via absorption, present to some extent in any optical cavity, is known to introduce thermo-optical effects and thereby impose fundamental limits on precision measurements. Here, we theoretically and experimentally reveal that such dissipative photon absorption can result in quantum feedback via in-loop field detection of the absorbed optical field, leading to the intracavity field fluctuations to be squashed or antisquashed. A closed-loop dissipative quantum feedback to the cavity field arises. Strikingly, this modifies the optical cavity susceptibility in coherent response measurements (capable of both increasing or decreasing the bare cavity linewidth) and causes excess noise and correlations in incoherent interferometric optomechanical measurements using a cavity, that is parametrically coupled to a mechanical oscillator. We experimentally observe such unanticipated dissipative dynamics in optomechanical spectroscopy of sideband-cooled optomechanical crystal cavitiess at both cryogenic temperature (approximately 8 K) and ambient conditions. The dissipative feedback introduces effective modifications to the optical cavity linewidth and the optomechanical scattering rate and gives rise to excess imprecision noise in the interferometric quantum measurement of mechanical motion. Such dissipative feedback differs fundamentally from a quantum nondemolition feedback, e.g., optical Kerr squeezing. The dissipative feedback itself always results in an antisqueezed out-of-loop optical field, while it can enhance the coexisting Kerr squeezing under certain conditions. Our result applies to cavity spectroscopy in both optical and superconducting microwave cavities, and equally applies to any dissipative feedback mechanism of different bandwidth inside the cavity. It has wide-ranging implications for future dissipation engineering, such as dissipation enhanced sideband cooling and Kerr squeezing, quantum frequency conversion, and nonreciprocity in photonic systems."}],"project":[{"call_identifier":"H2020","grant_number":"732894","_id":"257EB838-B435-11E9-9278-68D0E5697425","name":"Hybrid Optomechanical Technologies"}],"publication_status":"published","user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","publication_identifier":{"eissn":["2691-3399"]},"has_accepted_license":"1","article_processing_charge":"No","quality_controlled":"1","month":"04"},{"doi":"10.1063/5.0097339","day":"12","issue":"19","volume":120,"publication":"Applied Physics Letters","abstract":[{"text":"Over the past few years, the field of quantum information science has seen tremendous progress toward realizing large-scale quantum computers. With demonstrations of quantum computers outperforming classical computers for a select range of problems,1–3 we have finally entered the noisy, intermediate-scale quantum (NISQ) computing era. While the quantum computers of today are technological marvels, they are not yet error corrected, and it is unclear whether any system will scale beyond a few hundred logical qubits without significant changes to architecture and control schemes. Today's quantum systems are analogous to the ENIAC (Electronic Numerical Integrator And Computer) and EDVAC (Electronic Discrete Variable Automatic Computer) systems of the 1940s, which ran on vacuum tubes. These machines were built on a solid, nominally scalable architecture and when they were developed, nobody could have predicted the development of the transistor and the impact of the resulting semiconductor industry. Simply put, the computers of today are nothing like the early computers of the 1940s. We believe that the qubits of future fault-tolerant quantum systems will look quite different from the qubits of the NISQ machines in operation today. This Special Topic issue is devoted to new and emerging quantum systems with a focus on enabling technologies that can eventually lead to the quantum analog to the transistor. We have solicited both research4–18 and perspective articles19–21 to discuss new and emerging qubit systems with a focus on novel materials, encodings, and architectures. We are proud to present a collection that touches on a wide range of technologies including superconductors,7–13,21 semiconductors,15–17,19 and individual atomic qubits.18\r\n","lang":"eng"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","month":"05","quality_controlled":"1","article_processing_charge":"No","publication_identifier":{"issn":["0003-6951"]},"main_file_link":[{"url":"https://doi.org/10.1063/5.0097339","open_access":"1"}],"article_number":"190401","_id":"11417","year":"2022","type":"journal_article","status":"public","date_published":"2022-05-12T00:00:00Z","acknowledgement":"We would like to thank all of the authors who contributed to\r\nthis Special Topic. We would also like to thank the editorial team at\r\nAPL including Jessica Trudeau, Emma Van Burns, Martin Weides,\r\nand Lesley Cohen.","title":"Emerging qubit systems: Guest editorial","scopus_import":"1","article_type":"letter_note","isi":1,"intvolume":"       120","external_id":{"isi":["000796002100002"]},"citation":{"apa":"Sigillito, A. J., Covey, J. P., Fink, J. M., Petersson, K., &#38; Preble, S. (2022). Emerging qubit systems: Guest editorial. <i>Applied Physics Letters</i>. American Institute of Physics. <a href=\"https://doi.org/10.1063/5.0097339\">https://doi.org/10.1063/5.0097339</a>","ama":"Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. Emerging qubit systems: Guest editorial. <i>Applied Physics Letters</i>. 2022;120(19). doi:<a href=\"https://doi.org/10.1063/5.0097339\">10.1063/5.0097339</a>","ieee":"A. J. Sigillito, J. P. Covey, J. M. Fink, K. Petersson, and S. Preble, “Emerging qubit systems: Guest editorial,” <i>Applied Physics Letters</i>, vol. 120, no. 19. American Institute of Physics, 2022.","ista":"Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. 2022. Emerging qubit systems: Guest editorial. Applied Physics Letters. 120(19), 190401.","mla":"Sigillito, Anthony J., et al. “Emerging Qubit Systems: Guest Editorial.” <i>Applied Physics Letters</i>, vol. 120, no. 19, 190401, American Institute of Physics, 2022, doi:<a href=\"https://doi.org/10.1063/5.0097339\">10.1063/5.0097339</a>.","short":"A.J. Sigillito, J.P. Covey, J.M. Fink, K. Petersson, S. Preble, Applied Physics Letters 120 (2022).","chicago":"Sigillito, Anthony J., Jacob P. Covey, Johannes M Fink, Karl Petersson, and Stefan Preble. “Emerging Qubit Systems: Guest Editorial.” <i>Applied Physics Letters</i>. American Institute of Physics, 2022. <a href=\"https://doi.org/10.1063/5.0097339\">https://doi.org/10.1063/5.0097339</a>."},"fulldoi":"https://doi.org/10.1063/5.0097339","date_created":"2022-05-29T22:01:53Z","publisher":"American Institute of Physics","date_updated":"2026-06-18T17:14:33Z","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"oa":1,"author":[{"last_name":"Sigillito","full_name":"Sigillito, Anthony J.","first_name":"Anthony J."},{"full_name":"Covey, Jacob P.","first_name":"Jacob P.","last_name":"Covey"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M"},{"full_name":"Petersson, Karl","first_name":"Karl","last_name":"Petersson"},{"full_name":"Preble, Stefan","first_name":"Stefan","last_name":"Preble"}],"ddc":["530"]},{"project":[{"_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","name":"Quantum Local Area Networks with Superconducting Qubits","call_identifier":"H2020","grant_number":"899354"}],"publication_status":"published","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_processing_charge":"No","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"month":"06","quality_controlled":"1","issue":"6","volume":105,"publication":"Physical Review A","doi":"10.1103/PhysRevA.105.062454","day":"29","oa_version":"Preprint","abstract":[{"text":"We investigate the deterministic generation and distribution of entanglement in large quantum networks by driving distant qubits with the output fields of a nondegenerate parametric amplifier. In this setting, the amplifier produces a continuous Gaussian two-mode squeezed state, which acts as a quantum-correlated reservoir for the qubits and relaxes them into a highly entangled steady state. Here we are interested in the maximal amount of entanglement and the optimal entanglement generation rates that can be achieved with this scheme under realistic conditions taking, in particular, the finite amplifier bandwidth, waveguide losses, and propagation delays into account. By combining exact numerical simulations of the full network with approximate analytic results, we predict the optimal working point for the amplifier and the corresponding qubit-qubit entanglement under various conditions. Our findings show that this passive conversion of Gaussian into discrete-variable entanglement offers a robust and experimentally very attractive approach for operating large optical, microwave, or hybrid quantum networks, for which efficient parametric amplifiers are currently developed.","lang":"eng"}],"scopus_import":"1","title":"Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams","article_number":"062454","_id":"11591","year":"2022","main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2204.02993"}],"date_published":"2022-06-29T00:00:00Z","acknowledgement":"We thank T. Mavrogordatos and D. Zhu for initial contribution on the presented topic and K. Fedorov for stimulating discussions on entangled microwave beams. This work was supported by the Austrian Science Fund (FWF) through Grant No. P32299 (PHONED) and the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 899354 (SuperQuLAN). Most of the computational results presented were obtained using the CLIP cluster [65].","type":"journal_article","status":"public","publisher":"American Physical Society","date_created":"2022-07-17T22:01:55Z","intvolume":"       105","article_type":"original","isi":1,"citation":{"mla":"Agustí, J., et al. “Long-Distance Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.” <i>Physical Review A</i>, vol. 105, no. 6, 062454, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevA.105.062454\">10.1103/PhysRevA.105.062454</a>.","short":"J. Agustí, Y. Minoguchi, J.M. Fink, P. Rabl, Physical Review A 105 (2022).","chicago":"Agustí, J., Y. Minoguchi, Johannes M Fink, and P. Rabl. “Long-Distance Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.” <i>Physical Review A</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevA.105.062454\">https://doi.org/10.1103/PhysRevA.105.062454</a>.","ama":"Agustí J, Minoguchi Y, Fink JM, Rabl P. Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. <i>Physical Review A</i>. 2022;105(6). doi:<a href=\"https://doi.org/10.1103/PhysRevA.105.062454\">10.1103/PhysRevA.105.062454</a>","apa":"Agustí, J., Minoguchi, Y., Fink, J. M., &#38; Rabl, P. (2022). Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.105.062454\">https://doi.org/10.1103/PhysRevA.105.062454</a>","ieee":"J. Agustí, Y. Minoguchi, J. M. Fink, and P. Rabl, “Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams,” <i>Physical Review A</i>, vol. 105, no. 6. American Physical Society, 2022.","ista":"Agustí J, Minoguchi Y, Fink JM, Rabl P. 2022. Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams. Physical Review A. 105(6), 062454."},"fulldoi":"https://doi.org/10.1103/PhysRevA.105.062454","external_id":{"arxiv":["2204.02993"],"isi":["000824330200003"]},"arxiv":1,"oa":1,"ec_funded":1,"author":[{"last_name":"Agustí","full_name":"Agustí, J.","first_name":"J."},{"last_name":"Minoguchi","first_name":"Y.","full_name":"Minoguchi, Y."},{"orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"},{"first_name":"P.","full_name":"Rabl, P.","last_name":"Rabl"}],"language":[{"iso":"eng"}],"date_updated":"2025-04-14T07:53:28Z","department":[{"_id":"JoFi"}]},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2022-09-11T22:01:58Z","publication_status":"published","publisher":"Optica Publishing Group","quality_controlled":"1","month":"05","publication_identifier":{"isbn":["9781557528209"]},"article_processing_charge":"No","doi":"10.1364/CLEO_QELS.2022.FW4D.4","day":"01","publication":"Conference on Lasers and Electro-Optics","corr_author":"1","abstract":[{"lang":"eng","text":"We present a quantum-enabled microwave-telecom interface with bidirectional conversion efficiencies up to 15% and added input noise quanta as low as 0.16. Moreover, we observe evidence for electro-optic laser cooling and vacuum amplification."}],"oa_version":"None","fulldoi":"https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4","citation":{"mla":"Sahu, Rishabh, et al. “Realizing a Quantum-Enabled Interconnect between Microwave and Telecom Light.” <i>Conference on Lasers and Electro-Optics</i>, FW4D.4, Optica Publishing Group, 2022, doi:<a href=\"https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4\">10.1364/CLEO_QELS.2022.FW4D.4</a>.","short":"R. Sahu, W.J. Hease, A.R. Rueda Sanchez, G.M. Arnold, L. Qiu, J.M. Fink, in:, Conference on Lasers and Electro-Optics, Optica Publishing Group, 2022.","chicago":"Sahu, Rishabh, William J Hease, Alfredo R Rueda Sanchez, Georg M Arnold, Liu Qiu, and Johannes M Fink. “Realizing a Quantum-Enabled Interconnect between Microwave and Telecom Light.” In <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group, 2022. <a href=\"https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4\">https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4</a>.","ama":"Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. Realizing a quantum-enabled interconnect between microwave and telecom light. In: <i>Conference on Lasers and Electro-Optics</i>. Optica Publishing Group; 2022. doi:<a href=\"https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4\">10.1364/CLEO_QELS.2022.FW4D.4</a>","apa":"Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &#38; Fink, J. M. (2022). Realizing a quantum-enabled interconnect between microwave and telecom light. In <i>Conference on Lasers and Electro-Optics</i>. San Jose, CA, United States: Optica Publishing Group. <a href=\"https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4\">https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4</a>","ieee":"R. Sahu, W. J. Hease, A. R. Rueda Sanchez, G. M. Arnold, L. Qiu, and J. M. Fink, “Realizing a quantum-enabled interconnect between microwave and telecom light,” in <i>Conference on Lasers and Electro-Optics</i>, San Jose, CA, United States, 2022.","ista":"Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. 2022. Realizing a quantum-enabled interconnect between microwave and telecom light. Conference on Lasers and Electro-Optics. CLEO: QELS Fundamental Science, FW4D.4."},"author":[{"last_name":"Sahu","orcid":"0000-0001-6264-2162","full_name":"Sahu, Rishabh","first_name":"Rishabh","id":"47D26E34-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Hease","orcid":"0000-0001-9868-2166","full_name":"Hease, William J","first_name":"William J","id":"29705398-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Rueda Sanchez","orcid":"0000-0001-6249-5860","first_name":"Alfredo R","full_name":"Rueda Sanchez, Alfredo R","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87"},{"id":"3770C838-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-1397-7876","full_name":"Arnold, Georg M","first_name":"Georg M","last_name":"Arnold"},{"last_name":"Qiu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","full_name":"Qiu, Liu","first_name":"Liu","orcid":"0000-0003-4345-4267"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X"}],"title":"Realizing a quantum-enabled interconnect between microwave and telecom light","scopus_import":"1","date_updated":"2024-10-09T21:03:27Z","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"year":"2022","article_number":"FW4D.4","_id":"12088","status":"public","type":"conference","conference":{"location":"San Jose, CA, United States","name":"CLEO: QELS Fundamental Science","end_date":"2022-05-20","start_date":"2022-05-15"},"date_published":"2022-05-01T00:00:00Z"},{"tmp":{"legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","short":"CC0 (1.0)","image":"/images/cc_0.png","name":"Creative Commons Public Domain Dedication (CC0 1.0)"},"article_processing_charge":"No","has_accepted_license":"1","month":"06","publisher":"Zenodo","date_created":"2023-11-13T08:09:10Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","fulldoi":"https://doi.org/10.5281/ZENODO.8408897","oa_version":"Published Version","citation":{"mla":"Zemlicka, Martin, et al. <i>Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses</i>. Zenodo, 2022, doi:<a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>.","chicago":"Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” Zenodo, 2022. <a href=\"https://doi.org/10.5281/ZENODO.8408897\">https://doi.org/10.5281/ZENODO.8408897</a>.","short":"M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh, J.M. Fink, (2022).","apa":"Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh, S., &#38; Fink, J. M. (2022). Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.8408897\">https://doi.org/10.5281/ZENODO.8408897</a>","ama":"Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses. 2022. doi:<a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>","ista":"Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink JM. 2022. Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.8408897\">10.5281/ZENODO.8408897</a>.","ieee":"M. Zemlicka <i>et al.</i>, “Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses.” Zenodo, 2022."},"corr_author":"1","abstract":[{"lang":"eng","text":"This dataset comprises all data shown in the figures of the submitted article \"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses\" at arxiv.org/abs/2206.14104. Additional raw data are available from the corresponding author on reasonable request."}],"doi":"10.5281/ZENODO.8408897","day":"28","ddc":["530"],"author":[{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0005-0878-3032","full_name":"Zemlicka, Martin","first_name":"Martin"},{"last_name":"Redchenko","first_name":"Elena","full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628","first_name":"Matilda","full_name":"Peruzzo, Matilda"},{"last_name":"Hassani","first_name":"Farid","full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Andrea","full_name":"Trioni, Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","last_name":"Trioni"},{"full_name":"Barzanjeh, Shabir","first_name":"Shabir","orcid":"0000-0003-0415-1423","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","last_name":"Barzanjeh"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"}],"title":"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses","oa":1,"date_published":"2022-06-28T00:00:00Z","license":"https://creativecommons.org/publicdomain/zero/1.0/","status":"public","type":"research_data_reference","related_material":{"record":[{"relation":"used_in_publication","status":"public","id":"14517"}]},"year":"2022","_id":"14520","main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/ZENODO.8408897"}],"date_updated":"2026-06-03T07:16:02Z","department":[{"_id":"JoFi"}]},{"OA_place":"publisher","title":"Controllable states of superconducting Qubit ensembles","file":[{"content_type":"application/pdf","date_created":"2023-01-25T09:41:49Z","relation":"main_file","date_updated":"2023-01-26T23:30:44Z","checksum":"39eabb1e006b41335f17f3b29af09648","file_id":"12367","file_name":"Final_Thesis_ES_Redchenko.pdf","file_size":56076868,"access_level":"open_access","embargo":"2022-12-28","creator":"cchlebak"}],"degree_awarded":"PhD","year":"2022","_id":"12366","date_published":"2022-09-26T00:00:00Z","status":"public","type":"dissertation","publication_status":"published","project":[{"name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385","call_identifier":"H2020"},{"call_identifier":"H2020","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"grant_number":"862644","call_identifier":"H2020","name":"Quantum readout techniques and technologies","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E"}],"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","publication_identifier":{"issn":["2663-337X"],"isbn":["978-3-99078-024-4"]},"article_processing_charge":"No","has_accepted_license":"1","month":"09","file_date_updated":"2023-01-26T23:30:44Z","day":"26","doi":"10.15479/at:ista:12132","oa_version":"Published Version","abstract":[{"text":"Recent substantial advances in the feld of superconducting circuits have shown its\r\npotential as a leading platform for future quantum computing. In contrast to classical\r\ncomputers based on bits that are represented by a single binary value, 0 or 1, quantum\r\nbits (or qubits) can be in a superposition of both. Thus, quantum computers can store\r\nand handle more information at the same time and a quantum advantage has already\r\nbeen demonstrated for two types of computational tasks. Rapid progress in academic\r\nand industry labs accelerates the development of superconducting processors which may\r\nsoon fnd applications in complex computations, chemical simulations, cryptography, and\r\noptimization. Now that these machines are scaled up to tackle such problems the questions\r\nof qubit interconnects and networks becomes very relevant. How to route signals on-chip\r\nbetween diferent processor components? What is the most efcient way to entangle\r\nqubits? And how to then send and process entangled signals between distant cryostats\r\nhosting superconducting processors?\r\nIn this thesis, we are looking for solutions to these problems by studying the collective\r\nbehavior of superconducting qubit ensembles. We frst demonstrate on-demand tunable\r\ndirectional scattering of microwave photons from a pair of qubits in a waveguide. Such a\r\ndevice can route microwave photons on-chip with a high diode efciency. Then we focus\r\non studying ultra-strong coupling regimes between light (microwave photons) and matter\r\n(superconducting qubits), a regime that could be promising for extremely fast multi-qubit\r\nentanglement generation. Finally, we show coherent pulse storage and periodic revivals\r\nin a fve qubit ensemble strongly coupled to a resonator. Such a reconfgurable storage\r\ndevice could be used as part of a quantum repeater that is needed for longer-distance\r\nquantum communication.\r\nThe achieved high degree of control over multi-qubit ensembles highlights not only the\r\nbeautiful physics of circuit quantum electrodynamics, it also represents the frst step\r\ntoward new quantum simulation and communication methods, and certain techniques\r\nmay also fnd applications in future superconducting quantum computing hardware.\r\n","lang":"eng"}],"supervisor":[{"orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"oa":1,"ec_funded":1,"ddc":["530"],"author":[{"first_name":"Elena","full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"}],"language":[{"iso":"eng"}],"department":[{"_id":"GradSch"},{"_id":"JoFi"}],"date_updated":"2026-04-07T14:22:39Z","publisher":"Institute of Science and Technology Austria","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"},{"_id":"EM-Fac"}],"date_created":"2023-01-25T09:17:02Z","alternative_title":["ISTA Thesis"],"fulldoi":"https://doi.org/10.15479/at:ista:12132","citation":{"chicago":"Redchenko, Elena. “Controllable States of Superconducting Qubit Ensembles.” Institute of Science and Technology Austria, 2022. <a href=\"https://doi.org/10.15479/at:ista:12132\">https://doi.org/10.15479/at:ista:12132</a>.","short":"E. Redchenko, Controllable States of Superconducting Qubit Ensembles, Institute of Science and Technology Austria, 2022.","mla":"Redchenko, Elena. <i>Controllable States of Superconducting Qubit Ensembles</i>. Institute of Science and Technology Austria, 2022, doi:<a href=\"https://doi.org/10.15479/at:ista:12132\">10.15479/at:ista:12132</a>.","ista":"Redchenko E. 2022. Controllable states of superconducting Qubit ensembles. Institute of Science and Technology Austria.","ieee":"E. Redchenko, “Controllable states of superconducting Qubit ensembles,” Institute of Science and Technology Austria, 2022.","apa":"Redchenko, E. (2022). <i>Controllable states of superconducting Qubit ensembles</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:12132\">https://doi.org/10.15479/at:ista:12132</a>","ama":"Redchenko E. Controllable states of superconducting Qubit ensembles. 2022. doi:<a href=\"https://doi.org/10.15479/at:ista:12132\">10.15479/at:ista:12132</a>"},"corr_author":"1","page":"168"},{"citation":{"short":"R. Sahu, W.J. Hease, A.R. Rueda Sanchez, G.M. Arnold, L. Qiu, J.M. Fink, Nature Communications 13 (2022).","chicago":"Sahu, Rishabh, William J Hease, Alfredo R Rueda Sanchez, Georg M Arnold, Liu Qiu, and Johannes M Fink. “Quantum-Enabled Operation of a Microwave-Optical Interface.” <i>Nature Communications</i>. Springer Nature, 2022. <a href=\"https://doi.org/10.1038/s41467-022-28924-2\">https://doi.org/10.1038/s41467-022-28924-2</a>.","mla":"Sahu, Rishabh, et al. “Quantum-Enabled Operation of a Microwave-Optical Interface.” <i>Nature Communications</i>, vol. 13, 1276, Springer Nature, 2022, doi:<a href=\"https://doi.org/10.1038/s41467-022-28924-2\">10.1038/s41467-022-28924-2</a>.","ieee":"R. Sahu, W. J. Hease, A. R. Rueda Sanchez, G. M. Arnold, L. Qiu, and J. M. Fink, “Quantum-enabled operation of a microwave-optical interface,” <i>Nature Communications</i>, vol. 13. Springer Nature, 2022.","ista":"Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. 2022. Quantum-enabled operation of a microwave-optical interface. Nature Communications. 13, 1276.","apa":"Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &#38; Fink, J. M. (2022). Quantum-enabled operation of a microwave-optical interface. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-022-28924-2\">https://doi.org/10.1038/s41467-022-28924-2</a>","ama":"Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. Quantum-enabled operation of a microwave-optical interface. <i>Nature Communications</i>. 2022;13. doi:<a href=\"https://doi.org/10.1038/s41467-022-28924-2\">10.1038/s41467-022-28924-2</a>"},"fulldoi":"https://doi.org/10.1038/s41467-022-28924-2","corr_author":"1","external_id":{"arxiv":["2107.08303"],"pmid":["35277488"],"isi":["000767892300013"]},"intvolume":"        13","article_type":"original","isi":1,"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"acknowledged_ssus":[{"_id":"M-Shop"}],"publisher":"Springer Nature","date_created":"2022-03-27T22:01:45Z","department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"date_updated":"2026-11-08T23:30:30Z","ddc":["530"],"author":[{"id":"47D26E34-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6264-2162","first_name":"Rishabh","full_name":"Sahu, Rishabh","last_name":"Sahu"},{"last_name":"Hease","id":"29705398-F248-11E8-B48F-1D18A9856A87","first_name":"William J","full_name":"Hease, William J","orcid":"0000-0001-9868-2166"},{"last_name":"Rueda Sanchez","full_name":"Rueda Sanchez, Alfredo R","first_name":"Alfredo R","orcid":"0000-0001-6249-5860","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0003-1397-7876","full_name":"Arnold, Georg M","first_name":"Georg M","id":"3770C838-F248-11E8-B48F-1D18A9856A87","last_name":"Arnold"},{"id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","first_name":"Liu","full_name":"Qiu, Liu","orcid":"0000-0003-4345-4267","last_name":"Qiu"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"arxiv":1,"oa":1,"ec_funded":1,"oa_version":"Published Version","abstract":[{"text":"Solid-state microwave systems offer strong interactions for fast quantum logic and sensing but photons at telecom wavelength are the ideal choice for high-density low-loss quantum interconnects. A general-purpose interface that can make use of single photon effects requires < 1 input noise quanta, which has remained elusive due to either low efficiency or pump induced heating. Here we demonstrate coherent electro-optic modulation on nanosecond-timescales with only 0.16+0.02−0.01 microwave input noise photons with a total bidirectional transduction efficiency of 8.7% (or up to 15% with 0.41+0.02−0.02), as required for near-term heralded quantum network protocols. The use of short and high-power optical pump pulses also enables near-unity cooperativity of the electro-optic interaction leading to an internal pure conversion efficiency of up to 99.5%. Together with the low mode occupancy this provides evidence for electro-optic laser cooling and vacuum amplification as predicted a decade ago.","lang":"eng"}],"file_date_updated":"2022-03-28T08:02:12Z","publication":"Nature Communications","volume":13,"day":"11","doi":"10.1038/s41467-022-28924-2","has_accepted_license":"1","article_processing_charge":"No","publication_identifier":{"eissn":["2041-1723"]},"month":"03","quality_controlled":"1","pmid":1,"project":[{"grant_number":"758053","call_identifier":"H2020","name":"A Fiber Optic Transceiver for Superconducting Qubits","_id":"26336814-B435-11E9-9278-68D0E5697425"},{"call_identifier":"H2020","grant_number":"899354","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","name":"Quantum Local Area Networks with Superconducting Qubits"},{"call_identifier":"H2020","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships"},{"name":"Quantum readout techniques and technologies","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","grant_number":"862644","call_identifier":"H2020"},{"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","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2022-03-11T00:00:00Z","acknowledgement":"The authors thank S. Wald and F. Diorico for their help with optical filtering, O. Hosten\r\nand M. Aspelmeyer for equipment, H.G.L. Schwefel for materials and discussions, L.\r\nDrmic and P. Zielinski for software support, and the MIBA workshop at IST Austria for\r\nmachining the microwave cavity. This work was supported by the European Research\r\nCouncil under grant agreement no. 758053 (ERC StG QUNNECT) and the European\r\nUnion’s Horizon 2020 research and innovation program under grant agreement no.\r\n899354 (FETopen SuperQuLAN). W.H. is the recipient of an ISTplus postdoctoral fellowship\r\nwith funding from the European Union’s Horizon 2020 research and innovation\r\nprogram under the Marie Skłodowska-Curie grant agreement no. 754411. G.A. is the\r\nrecipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. J.M.F.\r\nacknowledges support from the Austrian Science Fund (FWF) through BeyondC (F7105)\r\nand the European Union’s Horizon 2020 research and innovation programs under grant\r\nagreement no. 862644 (FETopen QUARTET).","related_material":{"record":[{"status":"public","id":"13175","relation":"dissertation_contains"},{"status":"public","id":"12900","relation":"dissertation_contains"},{"id":"18871","status":"public","relation":"dissertation_contains"}]},"type":"journal_article","status":"public","_id":"10924","article_number":"1276","file":[{"checksum":"7c5176db7b8e2ed18a4e0c5aca70a72c","file_name":"2022_NatureCommunications_Sahu.pdf","date_updated":"2022-03-28T08:02:12Z","file_id":"10929","file_size":1167492,"access_level":"open_access","creator":"dernst","content_type":"application/pdf","date_created":"2022-03-28T08:02:12Z","success":1,"relation":"main_file"}],"year":"2022","scopus_import":"1","title":"Quantum-enabled operation of a microwave-optical interface"},{"oa":1,"ddc":["530"],"author":[{"last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628","full_name":"Peruzzo, Matilda","first_name":"Matilda"},{"id":"2AED110C-F248-11E8-B48F-1D18A9856A87","first_name":"Farid","full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","last_name":"Hassani"},{"last_name":"Szep","first_name":"Grisha","full_name":"Szep, Grisha"},{"full_name":"Trioni, Andrea","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","last_name":"Trioni"},{"last_name":"Redchenko","full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0005-0878-3032","full_name":"Zemlicka, Martin","first_name":"Martin","last_name":"Zemlicka"},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","year":"2021","_id":"13057","main_file_link":[{"url":"https://doi.org/10.5281/zenodo.5592104","open_access":"1"}],"date_updated":"2026-04-15T06:41:45Z","department":[{"_id":"JoFi"}],"date_published":"2021-10-22T00:00:00Z","status":"public","related_material":{"record":[{"status":"public","id":"9928","relation":"used_in_publication"}]},"type":"research_data_reference","publisher":"Zenodo","date_created":"2023-05-23T13:42:27Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"article_processing_charge":"No","month":"10","day":"22","doi":"10.5281/ZENODO.5592103","oa_version":"Published Version","fulldoi":"https://doi.org/10.5281/ZENODO.5592103","citation":{"mla":"Peruzzo, Matilda, et al. <i>Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction</i>. Zenodo, 2021, doi:<a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>.","chicago":"Peruzzo, Matilda, Farid Hassani, Grisha Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” Zenodo, 2021. <a href=\"https://doi.org/10.5281/ZENODO.5592103\">https://doi.org/10.5281/ZENODO.5592103</a>.","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, (2021).","ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. 2021. doi:<a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>","apa":"Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M., &#38; Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.5592103\">https://doi.org/10.5281/ZENODO.5592103</a>","ieee":"M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction.” Zenodo, 2021.","ista":"Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM. 2021. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.5592103\">10.5281/ZENODO.5592103</a>."},"corr_author":"1","abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction\". Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}]},{"citation":{"ieee":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, <i>The Bluefors dilution refrigerator as an integrated quantum measurement system</i>. Helsinki, Finland: Bluefors Oy, 2021.","ista":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland: Bluefors Oy, 9p.","apa":"Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., &#38; Fink, J. M. (2021). <i>The Bluefors dilution refrigerator as an integrated quantum measurement system</i>. Helsinki, Finland: Bluefors Oy.","ama":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy; 2021.","chicago":"Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and Johannes M Fink. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy, 2021.","short":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.","mla":"Lake, Russell, et al. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Bluefors Oy, 2021."},"oa_version":"Published Version","abstract":[{"lang":"eng","text":"The purpose of this application note is to demonstrate a working example of a superconducting qubit measurement in a Bluefors cryostat using the Keysight quantum control hardware. Our motivation is twofold. First, we provide pre-qualification data that the Bluefors cryostat, including filtering and wiring, can support long-lived qubits. Second, we demonstrate that the Keysight system (controlled using Labber) provides a straightforward solution to perform these characterization measurements. This document is intended as a brief guide for starting an experimental platform for testing superconducting qubits. The setup described here is an immediate jumping off point for a suite of applications including testing quantum logical gates, quantum optics with microwaves, or even using the qubit itself as a sensitive probe of local electromagnetic fields. Qubit measurements rely on high performance of both the physical sample environment and the measurement electronics. An overview of the cryogenic system is shown in Figure 1, and an overview of the integration between the electronics and cryostat (including wiring details) is shown in Figure 2."}],"page":"9","day":"20","article_processing_charge":"No","alternative_title":["Bluefors Blog"],"month":"04","quality_controlled":"1","publisher":"Bluefors Oy","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2022-01-19T08:29:57Z","date_published":"2021-04-20T00:00:00Z","place":"Helsinki, Finland","type":"other_academic_publication","status":"public","_id":"10644","year":"2021","date_updated":"2026-06-18T08:45:11Z","language":[{"iso":"eng"}],"department":[{"_id":"JoFi"}],"main_file_link":[{"url":"https://bluefors.com/blog/integrated-quantum-measurement-system/","open_access":"1"}],"ddc":["530"],"title":"The Bluefors dilution refrigerator as an integrated quantum measurement system","author":[{"last_name":"Lake","full_name":"Lake, Russell","first_name":"Russell"},{"first_name":"Slawomir","full_name":"Simbierowicz, Slawomir","last_name":"Simbierowicz"},{"last_name":"Krantz","first_name":"Philip","full_name":"Krantz, Philip"},{"orcid":"0000-0001-6937-5773","full_name":"Hassani, Farid","first_name":"Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M"}],"keyword":["Application note"],"oa":1},{"author":[{"last_name":"Simbierowicz","first_name":"Slawomir","full_name":"Simbierowicz, Slawomir"},{"last_name":"Shi","first_name":"Chunyan","full_name":"Shi, Chunyan"},{"last_name":"Collodo","full_name":"Collodo, Michele","first_name":"Michele"},{"first_name":"Moritz","full_name":"Kirste, Moritz","last_name":"Kirste"},{"last_name":"Hassani","full_name":"Hassani, Farid","first_name":"Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fink","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Bylander","first_name":"Jonas","full_name":"Bylander, Jonas"},{"full_name":"Perez Lozano, Daniel","first_name":"Daniel","last_name":"Perez Lozano"},{"full_name":"Lake, Russell","first_name":"Russell","last_name":"Lake"}],"title":"Qubit energy-relaxation statistics in the Bluefors quantum measurement system","ddc":["530"],"oa":1,"keyword":["Application note"],"status":"public","type":"other_academic_publication","place":"Helsinki, Finland","date_published":"2021-06-03T00:00:00Z","main_file_link":[{"url":"https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/","open_access":"1"}],"language":[{"iso":"eng"}],"date_updated":"2026-06-18T08:46:15Z","department":[{"_id":"JoFi"}],"year":"2021","_id":"10645","quality_controlled":"1","month":"06","alternative_title":["Bluefors Blog"],"article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2022-01-19T08:41:14Z","publisher":"Bluefors Oy","publication_status":"published","page":"8","abstract":[{"lang":"eng","text":"Superconducting qubits have emerged as a highly versatile and useful platform for quantum technological applications [1]. Bluefors and Zurich Instruments have supported the growth of this field from the 2010s onwards by providing well-engineered and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit lifetime is a critical system property. Therefore, considerable effort has already gone into measuring qubit energy-relaxation timescales and their fluctuations, see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum device requires users to perform time consuming measurements. One measurement challenge is that the detection of the state-dependent\r\nresponse of a superconducting resonator due to a dispersively-coupled qubit requires an inherently low signal level. Consequently, measurements must be performed using a microwave probe that contains only a few microwave photons. Improving the signal-to-noise ratio (SNR) by using near-quantum limited parametric amplifiers as well as the use of optimized signal processing enabled by efficient room temperature instrumentation help to reduce measurement time. An empirical observation for fixed frequency transmons from recent literature is that as the energy-relaxation time 𝑇𝑇1 increases, so do its natural temporal fluctuations [7], [10]. This necessitates many repeated measurements to understand the statistics (see for example, Ref. [10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement times are expected to obtain accurate statistics. As described below, the scaling of the widths of the qubit energy-relaxation distributions also reveal clues about the origin of the energy-relaxation."}],"oa_version":"Published Version","citation":{"ieee":"S. Simbierowicz <i>et al.</i>, <i>Qubit energy-relaxation statistics in the Bluefors quantum measurement system</i>. Helsinki, Finland: Bluefors Oy, 2021.","ista":"Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.","ama":"Simbierowicz S, Shi C, Collodo M, et al. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy; 2021.","apa":"Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J. M., … Lake, R. (2021). <i>Qubit energy-relaxation statistics in the Bluefors quantum measurement system</i>. Helsinki, Finland: Bluefors Oy.","short":"S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J. Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.","chicago":"Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy, 2021.","mla":"Simbierowicz, Slawomir, et al. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Bluefors Oy, 2021."},"day":"03"},{"scopus_import":"1","title":"Frequency-multiplexed hybrid optical entangled source based on the Pockels effect","article_number":"023708","_id":"9242","year":"2021","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2010.05356"}],"acknowledgement":"I thank Prof. Shabir Barzanjeh and Dr. Ulrich Vogl for the fruitful discussions.\r\n","date_published":"2021-02-11T00:00:00Z","type":"journal_article","status":"public","publication_status":"published","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_processing_charge":"No","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"month":"02","quality_controlled":"1","issue":"2","publication":"Physical Review A","volume":103,"doi":"10.1103/PhysRevA.103.023708","day":"11","oa_version":"Preprint","abstract":[{"text":"In the recent years important experimental advances in resonant electro-optic modulators as high-efficiency sources for coherent frequency combs and as devices for quantum information transfer have been realized, where strong optical and microwave mode coupling were achieved. These features suggest electro-optic-based devices as candidates for entangled optical frequency comb sources. In the present work, I study the generation of entangled optical frequency combs in millimeter-sized resonant electro-optic modulators. These devices profit from the experimentally proven advantages such as nearly constant optical free spectral ranges over several gigahertz, and high optical and microwave quality factors. The generation of frequency multiplexed quantum channels with spectral bandwidth in the MHz range for conservative parameter values paves the way towards novel uses in long-distance hybrid quantum networks, quantum key distribution, enhanced optical metrology, and quantum computing.","lang":"eng"}],"oa":1,"arxiv":1,"author":[{"last_name":"Rueda Sanchez","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6249-5860","first_name":"Alfredo R","full_name":"Rueda Sanchez, Alfredo R"}],"department":[{"_id":"JoFi"}],"language":[{"iso":"eng"}],"date_updated":"2023-08-07T14:11:18Z","publisher":"American Physical Society","date_created":"2021-03-14T23:01:33Z","intvolume":"       103","article_type":"original","isi":1,"citation":{"ama":"Rueda Sanchez AR. Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. <i>Physical Review A</i>. 2021;103(2). doi:<a href=\"https://doi.org/10.1103/PhysRevA.103.023708\">10.1103/PhysRevA.103.023708</a>","apa":"Rueda Sanchez, A. R. (2021). Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.103.023708\">https://doi.org/10.1103/PhysRevA.103.023708</a>","ieee":"A. R. Rueda Sanchez, “Frequency-multiplexed hybrid optical entangled source based on the Pockels effect,” <i>Physical Review A</i>, vol. 103, no. 2. American Physical Society, 2021.","ista":"Rueda Sanchez AR. 2021. Frequency-multiplexed hybrid optical entangled source based on the Pockels effect. Physical Review A. 103(2), 023708.","mla":"Rueda Sanchez, Alfredo R. “Frequency-Multiplexed Hybrid Optical Entangled Source Based on the Pockels Effect.” <i>Physical Review A</i>, vol. 103, no. 2, 023708, American Physical Society, 2021, doi:<a href=\"https://doi.org/10.1103/PhysRevA.103.023708\">10.1103/PhysRevA.103.023708</a>.","short":"A.R. Rueda Sanchez, Physical Review A 103 (2021).","chicago":"Rueda Sanchez, Alfredo R. “Frequency-Multiplexed Hybrid Optical Entangled Source Based on the Pockels Effect.” <i>Physical Review A</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/PhysRevA.103.023708\">https://doi.org/10.1103/PhysRevA.103.023708</a>."},"fulldoi":"https://doi.org/10.1103/PhysRevA.103.023708","external_id":{"isi":["000617037900013"],"arxiv":["2010.05356"]}},{"date_updated":"2023-10-17T12:54:54Z","language":[{"iso":"eng"}],"department":[{"_id":"JoFi"}],"oa":1,"arxiv":1,"author":[{"full_name":"Mobassem, Sonia","first_name":"Sonia","last_name":"Mobassem"},{"last_name":"Lambert","first_name":"Nicholas J.","full_name":"Lambert, Nicholas J."},{"last_name":"Rueda Sanchez","orcid":"0000-0001-6249-5860","first_name":"Alfredo R","full_name":"Rueda Sanchez, Alfredo R","id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fink","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Gerd","full_name":"Leuchs, Gerd","last_name":"Leuchs"},{"first_name":"Harald G.L.","full_name":"Schwefel, Harald G.L.","last_name":"Schwefel"}],"ddc":["530"],"article_type":"original","isi":1,"intvolume":"         6","external_id":{"isi":["000673081500001"],"arxiv":["2008.08764"]},"citation":{"ista":"Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL. 2021. Thermal noise in electro-optic devices at cryogenic temperatures. Quantum Science and Technology. 6(4), 045005.","ieee":"S. Mobassem, N. J. Lambert, A. R. Rueda Sanchez, J. M. Fink, G. Leuchs, and H. G. L. Schwefel, “Thermal noise in electro-optic devices at cryogenic temperatures,” <i>Quantum Science and Technology</i>, vol. 6, no. 4. IOP Publishing, 2021.","apa":"Mobassem, S., Lambert, N. J., Rueda Sanchez, A. R., Fink, J. M., Leuchs, G., &#38; Schwefel, H. G. L. (2021). Thermal noise in electro-optic devices at cryogenic temperatures. <i>Quantum Science and Technology</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/2058-9565/ac0f36\">https://doi.org/10.1088/2058-9565/ac0f36</a>","ama":"Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL. Thermal noise in electro-optic devices at cryogenic temperatures. <i>Quantum Science and Technology</i>. 2021;6(4). doi:<a href=\"https://doi.org/10.1088/2058-9565/ac0f36\">10.1088/2058-9565/ac0f36</a>","short":"S. Mobassem, N.J. Lambert, A.R. Rueda Sanchez, J.M. Fink, G. Leuchs, H.G.L. Schwefel, Quantum Science and Technology 6 (2021).","chicago":"Mobassem, Sonia, Nicholas J. Lambert, Alfredo R Rueda Sanchez, Johannes M Fink, Gerd Leuchs, and Harald G.L. Schwefel. “Thermal Noise in Electro-Optic Devices at Cryogenic Temperatures.” <i>Quantum Science and Technology</i>. IOP Publishing, 2021. <a href=\"https://doi.org/10.1088/2058-9565/ac0f36\">https://doi.org/10.1088/2058-9565/ac0f36</a>.","mla":"Mobassem, Sonia, et al. “Thermal Noise in Electro-Optic Devices at Cryogenic Temperatures.” <i>Quantum Science and Technology</i>, vol. 6, no. 4, 045005, IOP Publishing, 2021, doi:<a href=\"https://doi.org/10.1088/2058-9565/ac0f36\">10.1088/2058-9565/ac0f36</a>."},"fulldoi":"https://doi.org/10.1088/2058-9565/ac0f36","date_created":"2021-08-08T22:01:25Z","publisher":"IOP Publishing","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"_id":"9815","article_number":"045005","year":"2021","file":[{"relation":"main_file","date_created":"2021-08-09T12:23:13Z","content_type":"application/pdf","creator":"cchlebak","file_size":2366118,"checksum":"b15c2c228487a75002c3b52d56f23d5c","date_updated":"2021-08-09T12:23:13Z","file_id":"9836","file_name":"2021_QuantumScienceTechnology_Mobassem.pdf","access_level":"open_access"}],"type":"journal_article","status":"public","acknowledgement":"NJL is supported by the MBIE Endeavour Fund (UOOX1805) and GL is by the Julius von Haast Fellowship of New Zealand. SM acknowledges stimulating discussions with T M Jensen.","date_published":"2021-07-15T00:00:00Z","title":"Thermal noise in electro-optic devices at cryogenic temperatures","scopus_import":"1","day":"15","doi":"10.1088/2058-9565/ac0f36","issue":"4","volume":6,"file_date_updated":"2021-08-09T12:23:13Z","publication":"Quantum Science and Technology","abstract":[{"lang":"eng","text":"The quantum bits (qubits) on which superconducting quantum computers are based have energy scales corresponding to photons with GHz frequencies. The energy of photons in the gigahertz domain is too low to allow transmission through the noisy room-temperature environment, where the signal would be lost in thermal noise. Optical photons, on the other hand, have much higher energies, and signals can be detected using highly efficient single-photon detectors. Transduction from microwave to optical frequencies is therefore a potential enabling technology for quantum devices. However, in such a device the optical pump can be a source of thermal noise and thus degrade the fidelity; the similarity of input microwave state to the output optical state. In order to investigate the magnitude of this effect we model the sub-Kelvin thermal behavior of an electro-optic transducer based on a lithium niobate whispering gallery mode resonator. We find that there is an optimum power level for a continuous pump, whilst pulsed operation of the pump increases the fidelity of the conversion."}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","month":"07","quality_controlled":"1","article_processing_charge":"Yes","has_accepted_license":"1","publication_identifier":{"eissn":["2058-9565"]}},{"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","publication_status":"published","month":"08","publication_identifier":{"isbn":["978-3-99078-013-8"],"issn":["2663-337X"]},"article_processing_charge":"No","has_accepted_license":"1","doi":"10.15479/at:ista:9920","day":"19","file_date_updated":"2021-09-06T08:39:47Z","supervisor":[{"last_name":"Fink","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"abstract":[{"lang":"eng","text":"This work is concerned with two fascinating circuit quantum electrodynamics components, the Josephson junction and the geometric superinductor, and the interesting experiments that can be done by combining the two. The Josephson junction has revolutionized the field of superconducting circuits as a non-linear dissipation-less circuit element and is used in almost all superconducting qubit implementations since the 90s. On the other hand, the superinductor is a relatively new circuit element introduced as a key component of the fluxonium qubit in 2009. This is an inductor with characteristic impedance larger than the resistance quantum and self-resonance frequency in the GHz regime. The combination of these two elements can occur in two fundamental ways: in parallel and in series. When connected in parallel the two create the fluxonium qubit, a loop with large inductance and a rich energy spectrum reliant on quantum tunneling. On the other hand placing the two elements in series aids with the measurement of the IV curve of a single Josephson junction in a high impedance environment. In this limit theory predicts that the junction will behave as its dual element: the phase-slip junction. While the Josephson junction acts as a non-linear inductor the phase-slip junction has the behavior of a non-linear capacitance and can be used to measure new Josephson junction phenomena, namely Coulomb blockade of Cooper pairs and phase-locked Bloch oscillations. The latter experiment allows for a direct link between frequency and current which is an elusive connection in quantum metrology. This work introduces the geometric superinductor, a superconducting circuit element where the high inductance is due to the geometry rather than the material properties of the superconductor, realized from a highly miniaturized superconducting planar coil. These structures will be described and characterized as resonators and qubit inductors and progress towards the measurement of phase-locked Bloch oscillations will be presented."}],"oa_version":"Published Version","keyword":["quantum computing","superinductor","quantum metrology"],"OA_place":"publisher","title":"Geometric superinductors and their applications in circuit quantum electrodynamics","file":[{"creator":"mperuzzo","access_level":"closed","date_updated":"2021-09-06T08:39:47Z","checksum":"3cd1986efde5121d7581f6fcf9090da8","file_name":"GeometricSuperinductorsForCQED.zip","file_id":"9924","file_size":151387283,"relation":"source_file","content_type":"application/x-zip-compressed","date_created":"2021-08-16T09:33:21Z"},{"access_level":"open_access","file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-1b.pdf","checksum":"50928c621cdf0775d7a5906b9dc8602c","date_updated":"2021-09-06T08:39:47Z","file_id":"9939","file_size":17596344,"creator":"mperuzzo","content_type":"application/pdf","date_created":"2021-08-18T14:20:06Z","relation":"main_file"},{"relation":"other","description":"Extra copy of the thesis as PDF/A-2b","date_created":"2021-08-18T14:20:09Z","content_type":"application/pdf","creator":"mperuzzo","access_level":"closed","file_size":17592425,"file_name":"GeometricSuperinductorsAndTheirApplicationsIncQED-2b.pdf","file_id":"9940","date_updated":"2021-09-06T08:39:47Z","checksum":"37f486aa1b622fe44af00d627ec13f6c"}],"year":"2021","degree_awarded":"PhD","_id":"9920","status":"public","type":"dissertation","related_material":{"record":[{"status":"public","id":"9928","relation":"part_of_dissertation"},{"status":"public","id":"8755","relation":"part_of_dissertation"}]},"date_published":"2021-08-19T00:00:00Z","date_created":"2021-08-16T09:44:09Z","publisher":"Institute of Science and Technology Austria","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"alternative_title":["ISTA Thesis"],"page":"149","corr_author":"1","fulldoi":"https://doi.org/10.15479/at:ista:9920","citation":{"mla":"Peruzzo, Matilda. <i>Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics</i>. Institute of Science and Technology Austria, 2021, doi:<a href=\"https://doi.org/10.15479/at:ista:9920\">10.15479/at:ista:9920</a>.","short":"M. Peruzzo, Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics, Institute of Science and Technology Austria, 2021.","chicago":"Peruzzo, Matilda. “Geometric Superinductors and Their Applications in Circuit Quantum Electrodynamics.” Institute of Science and Technology Austria, 2021. <a href=\"https://doi.org/10.15479/at:ista:9920\">https://doi.org/10.15479/at:ista:9920</a>.","ama":"Peruzzo M. Geometric superinductors and their applications in circuit quantum electrodynamics. 2021. doi:<a href=\"https://doi.org/10.15479/at:ista:9920\">10.15479/at:ista:9920</a>","apa":"Peruzzo, M. (2021). <i>Geometric superinductors and their applications in circuit quantum electrodynamics</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:9920\">https://doi.org/10.15479/at:ista:9920</a>","ieee":"M. Peruzzo, “Geometric superinductors and their applications in circuit quantum electrodynamics,” Institute of Science and Technology Austria, 2021.","ista":"Peruzzo M. 2021. Geometric superinductors and their applications in circuit quantum electrodynamics. Institute of Science and Technology Austria."},"oa":1,"author":[{"id":"3F920B30-F248-11E8-B48F-1D18A9856A87","first_name":"Matilda","full_name":"Peruzzo, Matilda","orcid":"0000-0002-3415-4628","last_name":"Peruzzo"}],"ddc":["539"],"date_updated":"2026-04-15T06:43:02Z","department":[{"_id":"GradSch"},{"_id":"JoFi"}],"language":[{"iso":"eng"}]},{"article_type":"original","isi":1,"intvolume":"         2","external_id":{"isi":["000723015100001"],"arxiv":["2106.05882"]},"corr_author":"1","page":"040341","citation":{"mla":"Peruzzo, Matilda, et al. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>, vol. 2, no. 4, American Physical Society, 2021, p. 040341, doi:<a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">10.1103/PRXQuantum.2.040341</a>.","chicago":"Peruzzo, Matilda, Farid Hassani, Gregory Szep, Andrea Trioni, Elena Redchenko, Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">https://doi.org/10.1103/PRXQuantum.2.040341</a>.","short":"M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M. Fink, PRX Quantum 2 (2021) 040341.","ama":"Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. <i>PRX Quantum</i>. 2021;2(4):040341. doi:<a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">10.1103/PRXQuantum.2.040341</a>","apa":"Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M., &#38; Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. <i>PRX Quantum</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PRXQuantum.2.040341\">https://doi.org/10.1103/PRXQuantum.2.040341</a>","ieee":"M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction,” <i>PRX Quantum</i>, vol. 2, no. 4. American Physical Society, p. 040341, 2021.","ista":"Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM. 2021. Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction. PRX Quantum. 2(4), 040341."},"fulldoi":"https://doi.org/10.1103/PRXQuantum.2.040341","date_created":"2021-08-17T08:14:18Z","acknowledged_ssus":[{"_id":"NanoFab"},{"_id":"M-Shop"}],"publisher":"American Physical Society","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"department":[{"_id":"JoFi"},{"_id":"NanoFab"},{"_id":"M-Shop"}],"language":[{"iso":"eng"}],"date_updated":"2026-10-02T11:28:16Z","ec_funded":1,"oa":1,"arxiv":1,"author":[{"last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","first_name":"Matilda","full_name":"Peruzzo, Matilda","orcid":"0000-0002-3415-4628"},{"orcid":"0000-0001-6937-5773","full_name":"Hassani, Farid","first_name":"Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani"},{"last_name":"Szep","full_name":"Szep, Gregory","first_name":"Gregory"},{"last_name":"Trioni","full_name":"Trioni, Andrea","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Redchenko","full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Zemlicka, Martin","first_name":"Martin","orcid":"0009-0005-0878-3032","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink"}],"ddc":["530"],"day":"24","doi":"10.1103/PRXQuantum.2.040341","issue":"4","publication":"PRX Quantum","file_date_updated":"2022-01-18T11:29:33Z","volume":2,"abstract":[{"text":"There are two elementary superconducting qubit types that derive directly from the quantum harmonic oscillator. In one, the inductor is replaced by a nonlinear Josephson junction to realize the widely used charge qubits with a compact phase variable and a discrete charge wave function. In the other, the junction is added in parallel, which gives rise to an extended phase variable, continuous wave functions, and a rich energy-level structure due to the loop topology. While the corresponding rf superconducting quantum interference device Hamiltonian was introduced as a quadratic quasi-one-dimensional potential approximation to describe the fluxonium qubit implemented with long Josephson-junction arrays, in this work we implement it directly using a linear superinductor formed by a single uninterrupted aluminum wire. We present a large variety of qubits, all stemming from the same circuit but with drastically different characteristic energy scales. This includes flux and fluxonium qubits but also the recently introduced quasicharge qubit with strongly enhanced zero-point phase fluctuations and a heavily suppressed flux dispersion. The use of a geometric inductor results in high reproducibility of the inductive energy as guaranteed by top-down lithography—a key ingredient for intrinsically protected superconducting qubits.","lang":"eng"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","project":[{"name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385","call_identifier":"H2020"},{"name":"Hybrid Semiconductor - Superconductor Quantum Devices","_id":"2622978C-B435-11E9-9278-68D0E5697425"},{"grant_number":"F07105","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f"}],"publication_status":"published","month":"11","quality_controlled":"1","has_accepted_license":"1","article_processing_charge":"No","publication_identifier":{"eissn":["2691-3399"]},"_id":"9928","year":"2021","file":[{"relation":"main_file","success":1,"date_created":"2022-01-18T11:29:33Z","content_type":"application/pdf","creator":"cchlebak","access_level":"open_access","file_size":4247422,"checksum":"36eb41ea43d8ca22b0efab12419e4eb2","file_id":"10641","file_name":"2021_PRXQuantum_Peruzzo.pdf","date_updated":"2022-01-18T11:29:33Z"}],"related_material":{"record":[{"id":"13057","status":"public","relation":"research_data"},{"id":"9920","status":"public","relation":"dissertation_contains"},{"relation":"dissertation_contains","status":"public","id":"17133"}]},"type":"journal_article","status":"public","acknowledgement":"We thank W. Hughes for analytic and numerical modeling during the early stages of this work, J. Koch for discussions and support with the scqubits package, R. Sett, P. Zielinski, and L. Drmic for software development, and G. Katsaros for equipment support, as well as the MIBA workshop and the Institute of Science and Technology Austria nanofabrication facility. We thank I. Pop, S. Deleglise, and E. Flurin for discussions. This work was supported by a NOMIS Foundation research grant, the Austrian Science Fund (FWF) through BeyondC (F7105), and IST Austria. M.P. is the recipient of a Pöttinger scholarship at IST Austria. E.R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.","date_published":"2021-11-24T00:00:00Z","keyword":["quantum physics","mesoscale and nanoscale physics"],"title":"Geometric superinductance qubits: Controlling phase delocalization across a single Josephson junction","scopus_import":"1"},{"month":"07","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"article_processing_charge":"No","date_created":"2023-05-23T13:37:41Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Zenodo","corr_author":"1","abstract":[{"lang":"eng","text":"This datasets comprises all data shown in plots of the submitted article \"Converting microwave and telecom photons with a silicon photonic nanomechanical interface\". Additional raw data are available from the corresponding author on reasonable request."}],"oa_version":"Published Version","fulldoi":"https://doi.org/10.5281/ZENODO.3961561","citation":{"mla":"Arnold, Georg M., et al. <i>Converting Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface</i>. Zenodo, 2020, doi:<a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</a>.","short":"G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J. Hease, F. Hassani, J.M. Fink, (2020).","chicago":"Arnold, Georg M, Matthias Wulf, Shabir Barzanjeh, Elena Redchenko, Alfredo R Rueda Sanchez, William J Hease, Farid Hassani, and Johannes M Fink. “Converting Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.” Zenodo, 2020. <a href=\"https://doi.org/10.5281/ZENODO.3961561\">https://doi.org/10.5281/ZENODO.3961561</a>.","ama":"Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons with a silicon photonic nanomechanical interface. 2020. doi:<a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</a>","apa":"Arnold, G. M., Wulf, M., Barzanjeh, S., Redchenko, E., Rueda Sanchez, A. R., Hease, W. J., … Fink, J. M. (2020). Converting microwave and telecom photons with a silicon photonic nanomechanical interface. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.3961561\">https://doi.org/10.5281/ZENODO.3961561</a>","ista":"Arnold GM, Wulf M, Barzanjeh S, Redchenko E, Rueda Sanchez AR, Hease WJ, Hassani F, Fink JM. 2020. Converting microwave and telecom photons with a silicon photonic nanomechanical interface, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.3961561\">10.5281/ZENODO.3961561</a>.","ieee":"G. M. Arnold <i>et al.</i>, “Converting microwave and telecom photons with a silicon photonic nanomechanical interface.” Zenodo, 2020."},"day":"27","doi":"10.5281/ZENODO.3961561","author":[{"last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-1397-7876","full_name":"Arnold, Georg M","first_name":"Georg M"},{"last_name":"Wulf","full_name":"Wulf, Matthias","first_name":"Matthias","orcid":"0000-0001-6613-1378","id":"45598606-F248-11E8-B48F-1D18A9856A87"},{"id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","first_name":"Shabir","full_name":"Barzanjeh, Shabir","orcid":"0000-0003-0415-1423","last_name":"Barzanjeh"},{"full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6249-5860","full_name":"Rueda Sanchez, Alfredo R","first_name":"Alfredo R","last_name":"Rueda Sanchez"},{"id":"29705398-F248-11E8-B48F-1D18A9856A87","first_name":"William J","full_name":"Hease, William J","orcid":"0000-0001-9868-2166","last_name":"Hease"},{"last_name":"Hassani","full_name":"Hassani, Farid","first_name":"Farid","orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fink","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"title":"Converting microwave and telecom photons with a silicon photonic nanomechanical interface","ddc":["530"],"oa":1,"status":"public","related_material":{"record":[{"relation":"used_in_publication","status":"public","id":"8529"}]},"type":"research_data_reference","date_published":"2020-07-27T00:00:00Z","main_file_link":[{"url":"https://doi.org/10.5281/zenodo.3961562","open_access":"1"}],"date_updated":"2025-06-12T07:03:01Z","department":[{"_id":"JoFi"}],"year":"2020","_id":"13056"},{"date_published":"2020-09-27T00:00:00Z","type":"research_data_reference","related_material":{"record":[{"status":"public","id":"8755","relation":"used_in_publication"}]},"status":"public","_id":"13070","year":"2020","date_updated":"2026-04-15T06:43:02Z","department":[{"_id":"JoFi"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/zenodo.4052883"}],"ddc":["530"],"title":"Surpassing the resistance quantum with a geometric superinductor","author":[{"last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","full_name":"Peruzzo, Matilda","first_name":"Matilda","orcid":"0000-0002-3415-4628"},{"full_name":"Trioni, Andrea","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","last_name":"Trioni"},{"id":"2AED110C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6937-5773","first_name":"Farid","full_name":"Hassani, Farid","last_name":"Hassani"},{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0005-0878-3032","first_name":"Martin","full_name":"Zemlicka, Martin"},{"last_name":"Fink","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"oa":1,"citation":{"mla":"Peruzzo, Matilda, et al. <i>Surpassing the Resistance Quantum with a Geometric Superinductor</i>. Zenodo, 2020, doi:<a href=\"https://doi.org/10.5281/ZENODO.4052882\">10.5281/ZENODO.4052882</a>.","short":"M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, J.M. Fink, (2020).","chicago":"Peruzzo, Matilda, Andrea Trioni, Farid Hassani, Martin Zemlicka, and Johannes M Fink. “Surpassing the Resistance Quantum with a Geometric Superinductor.” Zenodo, 2020. <a href=\"https://doi.org/10.5281/ZENODO.4052882\">https://doi.org/10.5281/ZENODO.4052882</a>.","ama":"Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. Surpassing the resistance quantum with a geometric superinductor. 2020. doi:<a href=\"https://doi.org/10.5281/ZENODO.4052882\">10.5281/ZENODO.4052882</a>","apa":"Peruzzo, M., Trioni, A., Hassani, F., Zemlicka, M., &#38; Fink, J. M. (2020). Surpassing the resistance quantum with a geometric superinductor. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.4052882\">https://doi.org/10.5281/ZENODO.4052882</a>","ista":"Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. 2020. Surpassing the resistance quantum with a geometric superinductor, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.4052882\">10.5281/ZENODO.4052882</a>.","ieee":"M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, and J. M. Fink, “Surpassing the resistance quantum with a geometric superinductor.” Zenodo, 2020."},"fulldoi":"https://doi.org/10.5281/ZENODO.4052882","oa_version":"Published Version","abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Surpassing the resistance quantum with a geometric superinductor\". Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}],"corr_author":"1","day":"27","doi":"10.5281/ZENODO.4052882","article_processing_charge":"No","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"month":"09","publisher":"Zenodo","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2023-05-23T16:42:30Z"}]