[{"oa":1,"abstract":[{"lang":"eng","text":"Superconducting qubits are a leading candidate for utility-scale quantum computing due to their fast gate speeds and steadily decreasing error rates. The requirement for millikelvin operating temperatures, however, creates a significant scaling bottleneck. Modular architectures using optical fiber links could bridge separate cryogenic nodes, but superconducting circuits do not have coherent optical transitions and microwave-to-optical conversion has not been shown for any non-classical photon state. In this work, we demonstrate the on-demand generation and tomographic reconstruction of itinerant single microwave photons at 8.9 GHz from a superconducting qubit. We upconvert this non-Gaussian state with a transducer added noise below 0.012 quanta and count the converted telecom photons at 193.4 THz with a signal-to-noise ratio of up to 5.1$\\pm$1.1. We characterize the trade-offs between throughput and noise, and establish a viable path toward heralded entanglement distribution and gate teleportation. Looking ahead, these results empower existing superconducting devices to take a key role in distributed quantum technologies and heterogeneous quantum systems."}],"month":"01","title":"Electro-optic conversion of itinerant Fock states","date_updated":"2026-05-20T13:35:42Z","date_published":"2026-01-31T00:00:00Z","oa_version":"Preprint","type":"preprint","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2602.00928"}],"doi":"10.48550/arXiv.2602.00928","publication_status":"draft","arxiv":1,"project":[{"grant_number":"101089099","name":"Cavity Quantum Electro Optics: Microwave photonics with nonclassical states","_id":"bdadfa0d-d553-11ed-ba76-fb85edbd456a"},{"name":"Integrated optical coupling for low loss electro-optic interconnects","_id":"5b807754-ab3d-11f0-914f-ff8c34502cc9","grant_number":"101248662"},{"grant_number":"899354","call_identifier":"H2020","name":"Quantum Local Area Networks with Superconducting Qubits","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A"},{"grant_number":"101187231","name":"Cavity-Integrated Electro-Optics: Measuring, Converting and Manipulating Microwaves with Light","_id":"91aaf765-16d5-11f0-9cad-a8e7e44cccb7"},{"grant_number":"F07105","call_identifier":"FWF","name":"Integrating superconducting quantum circuits","_id":"26927A52-B435-11E9-9278-68D0E5697425"},{"name":"NOMIS Fellowship Program","_id":"9B861AAC-BA93-11EA-9121-9846C619BF3A"}],"citation":{"short":"T. Werner, E. Riyazi, S. Hawaldar, R. Sahu, G.M. Arnold, P.F.-S. Paul Falthansl-Scheinecker, J.A.S. Naranjo, D. Loi, L.N. Kapoor, M. Zemlicka, L. Qiu, A. Militaru, J.M. Fink, ArXiv (n.d.).","apa":"Werner, T., Riyazi, E., Hawaldar, S., Sahu, R., Arnold, G. M., Paul Falthansl-Scheinecker, P. F.-S., … Fink, J. M. (n.d.). Electro-optic conversion of itinerant Fock states. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2602.00928\">https://doi.org/10.48550/arXiv.2602.00928</a>","ista":"Werner T, Riyazi E, Hawaldar S, Sahu R, Arnold GM, Paul Falthansl-Scheinecker PF-S, Naranjo JAS, Loi D, Kapoor LN, Zemlicka M, Qiu L, Militaru A, Fink JM. Electro-optic conversion of itinerant Fock states. arXiv, <a href=\"https://doi.org/10.48550/arXiv.2602.00928\">10.48550/arXiv.2602.00928</a>.","chicago":"Werner, Thomas, Erfan Riyazi, Samarth Hawaldar, Rishabh Sahu, Georg M Arnold, Paul Falthansl-Scheinecker Paul Falthansl-Scheinecker, Jennifer A. Sánchez Naranjo, et al. “Electro-Optic Conversion of Itinerant Fock States.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2602.00928\">https://doi.org/10.48550/arXiv.2602.00928</a>.","ama":"Werner T, Riyazi E, Hawaldar S, et al. Electro-optic conversion of itinerant Fock states. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2602.00928\">10.48550/arXiv.2602.00928</a>","mla":"Werner, Thomas, et al. “Electro-Optic Conversion of Itinerant Fock States.” <i>ArXiv</i>, doi:<a href=\"https://doi.org/10.48550/arXiv.2602.00928\">10.48550/arXiv.2602.00928</a>.","ieee":"T. Werner <i>et al.</i>, “Electro-optic conversion of itinerant Fock states,” <i>arXiv</i>. ."},"OA_type":"green","publication":"arXiv","status":"public","external_id":{"arxiv":["2602.00928"]},"ec_funded":1,"scopus_import":"1","department":[{"_id":"JoFi"},{"_id":"GradSch"}],"article_processing_charge":"No","OA_place":"repository","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","acknowledgement":"We thank Fritz Diorico and Onur Hosten who suggested the filter cavity design, and gave important insights about the assembly and the testing of the FabryPerot filter cavities. Ekatrina Fedotova and Diego A.\r\nLancheros Naranjo worked on the filter cavity setup in\r\nthe early stages of this work. Gustavo Wiederhecker and\r\nYiewen Chu provided insights as to the origins of the\r\nobserved optical noise and Nicola Carlon Zambon suggested using telecom filters to mitigate it further. This\r\nwork was supported by the European Research Council under grant agreement no. 101089099 (ERC CoG\r\ncQEO), and 101248662 (ERC POC CoupledEOT), the\r\nEuropean Unions Horizon 2020 research and innovation\r\nprogram under grant agreement no. 899354 (FETopen\r\nSuperQuLAN), the European Innovation Council no.\r\n101187231 (PathfinderOpen CIELO), and the Austrian\r\nScience Fund (FWF) no. F7105 (SFB BeyondC). J.F.\r\nand L.K. acknowledge support from the Horizon Europe\r\nProgram HORIZON-CL4-2022-QUANTUM-01-SGA via\r\nProject No. 101113946 OpenSuperQPlus100. A.M. acknowledges support from the NOMIS-ISTA fellowship.","language":[{"iso":"eng"}],"year":"2026","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"corr_author":"1","day":"31","date_created":"2026-05-12T13:58:18Z","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"21863"}]},"_id":"21870","author":[{"orcid":"0009-0001-2346-5236","first_name":"Thomas","full_name":"Werner, Thomas","last_name":"Werner","id":"1fcd8497-dba3-11ea-a45e-c6fbd715f7c7"},{"first_name":"Erfan","full_name":"Riyazi, Erfan","last_name":"Riyazi","id":"53322f94-5355-11ee-ae5a-ff6f81c87d51"},{"last_name":"Hawaldar","id":"221708e1-1ff6-11ee-9fa6-85146607433e","orcid":"0000-0002-1965-4309","first_name":"Samarth","full_name":"Hawaldar, Samarth"},{"full_name":"Sahu, Rishabh","first_name":"Rishabh","orcid":"0000-0001-6264-2162","last_name":"Sahu","id":"47D26E34-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Georg M","full_name":"Arnold, Georg M","orcid":"0000-0003-1397-7876","last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Paul Falthansl-Scheinecker, Paul Falthansl-Scheinecker","first_name":"Paul Falthansl-Scheinecker","last_name":"Paul Falthansl-Scheinecker"},{"last_name":"Naranjo","full_name":"Naranjo, Jennifer A. Sánchez","first_name":"Jennifer A. Sánchez"},{"last_name":"Loi","full_name":"Loi, Dante","first_name":"Dante"},{"last_name":"Kapoor","first_name":"Lucky N.","full_name":"Kapoor, Lucky N."},{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","full_name":"Zemlicka, Martin","orcid":"0009-0005-0878-3032"},{"last_name":"Qiu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","orcid":"0000-0003-4345-4267","full_name":"Qiu, Liu","first_name":"Liu"},{"full_name":"Militaru, Andrei","first_name":"Andrei","last_name":"Militaru","id":"d67706f8-8eb1-11ee-ad1b-9c30dfa19e0b"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X"}]},{"related_material":{"record":[{"relation":"earlier_version","status":"public","id":"18953"},{"relation":"dissertation_contains","status":"public","id":"21863"}],"link":[{"url":"https://ista.ac.at/en/news/when-qubits-learn-the-language-of-fiberoptics/","description":"News on ISTA Website","relation":"press_release"}]},"date_created":"2025-02-23T23:01:57Z","author":[{"last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87","first_name":"Georg M","full_name":"Arnold, Georg M","orcid":"0000-0003-1397-7876"},{"orcid":"0009-0001-2346-5236","first_name":"Thomas","full_name":"Werner, Thomas","id":"1fcd8497-dba3-11ea-a45e-c6fbd715f7c7","last_name":"Werner"},{"orcid":"0000-0001-6264-2162","full_name":"Sahu, Rishabh","first_name":"Rishabh","id":"47D26E34-F248-11E8-B48F-1D18A9856A87","last_name":"Sahu"},{"last_name":"Kapoor","id":"84b9700b-15b2-11ec-abd3-831089e67615","orcid":"0000-0001-8319-2148","full_name":"Kapoor, Lucky","first_name":"Lucky"},{"orcid":"0000-0003-4345-4267","first_name":"Liu","full_name":"Qiu, Liu","last_name":"Qiu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac"},{"last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X"}],"_id":"19073","volume":21,"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"day":"01","corr_author":"1","intvolume":"        21","OA_place":"publisher","article_processing_charge":"Yes (via OA deal)","language":[{"iso":"eng"}],"acknowledgement":"We thank F. Hassani and M. Zemlicka for assistance with qubit design and high-power readout, respectively, and P. Winkel and I. Pop at Karlsruhe Institute of Technology for providing the JPA. This work was supported by the European Research Council under grant nos. 758053 (ERC StG QUNNECT) and 101089099 (ERC CoG cQEO), and the European Union’s Horizon 2020 research and innovation program under grant no. 899354 (FETopen SuperQuLAN). This research was funded in whole, or in part, by the Austrian Science Fund (FWF) DOI 10.55776/F71. L.Q. acknowledges generous support from the ISTFELLOW programme and G.A. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. Open access funding provided by Institute of Science and Technology (IST Austria).","user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","publisher":"Springer Nature","year":"2025","article_number":"9470","publication":"Nature Physics","OA_type":"hybrid","status":"public","citation":{"short":"G.M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, J.M. Fink, Nature Physics 21 (2025).","apa":"Arnold, G. M., Werner, T., Sahu, R., Kapoor, L., Qiu, L., &#38; Fink, J. M. (2025). All-optical superconducting qubit readout. <i>Nature Physics</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41567-024-02741-4\">https://doi.org/10.1038/s41567-024-02741-4</a>","chicago":"Arnold, Georg M, Thomas Werner, Rishabh Sahu, Lucky Kapoor, Liu Qiu, and Johannes M Fink. “All-Optical Superconducting Qubit Readout.” <i>Nature Physics</i>. Springer Nature, 2025. <a href=\"https://doi.org/10.1038/s41567-024-02741-4\">https://doi.org/10.1038/s41567-024-02741-4</a>.","ista":"Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. 2025. All-optical superconducting qubit readout. Nature Physics. 21, 9470.","ama":"Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. All-optical superconducting qubit readout. <i>Nature Physics</i>. 2025;21. doi:<a href=\"https://doi.org/10.1038/s41567-024-02741-4\">10.1038/s41567-024-02741-4</a>","ieee":"G. M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, and J. M. Fink, “All-optical superconducting qubit readout,” <i>Nature Physics</i>, vol. 21. Springer Nature, 2025.","mla":"Arnold, Georg M., et al. “All-Optical Superconducting Qubit Readout.” <i>Nature Physics</i>, vol. 21, 9470, Springer Nature, 2025, doi:<a href=\"https://doi.org/10.1038/s41567-024-02741-4\">10.1038/s41567-024-02741-4</a>."},"quality_controlled":"1","external_id":{"isi":["001417760400001"],"pmid":["40093969"]},"ec_funded":1,"department":[{"_id":"JoFi"}],"scopus_import":"1","ddc":["530"],"project":[{"_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits","grant_number":"758053","call_identifier":"H2020"},{"grant_number":"101089099","_id":"bdadfa0d-d553-11ed-ba76-fb85edbd456a","name":"Cavity Quantum Electro Optics: Microwave photonics with nonclassical states"},{"grant_number":"899354","call_identifier":"H2020","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","name":"Quantum Local Area Networks with Superconducting Qubits"},{"_id":"2671EB66-B435-11E9-9278-68D0E5697425","name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies"},{"_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","grant_number":"F07105"}],"oa_version":"Published Version","type":"journal_article","isi":1,"doi":"10.1038/s41567-024-02741-4","file_date_updated":"2025-04-16T08:09:43Z","publication_status":"published","has_accepted_license":"1","file":[{"checksum":"ab7469aca9e2e068eb78e5c5c1efaf7d","file_size":3396595,"relation":"main_file","access_level":"open_access","success":1,"file_id":"19572","content_type":"application/pdf","file_name":"2025_NaturePhysics_Arnold.pdf","date_updated":"2025-04-16T08:09:43Z","creator":"dernst","date_created":"2025-04-16T08:09:43Z"}],"month":"03","pmid":1,"title":"All-optical superconducting qubit readout","date_published":"2025-03-01T00:00:00Z","article_type":"original","date_updated":"2026-05-20T13:35:42Z","publication_identifier":{"eissn":["1745-2481"],"issn":["1745-2473"]},"abstract":[{"text":"The rapid development of superconducting quantum hardware is expected to run into substantial restrictions on scalability because error correction in a cryogenic environment has stringent input–output requirements. Classical data centres rely on fibre-optic interconnects to remove similar networking bottlenecks. In the same spirit, ultracold electro-optic links have been proposed and used to generate qubit control signals, or to replace cryogenic readout electronics. So far, these approaches have suffered from either low efficiency, low bandwidth or additional noise. Here we realize radio-over-fibre qubit readout at millikelvin temperatures. We use one device to simultaneously perform upconversion and downconversion between microwave and optical frequencies and so do not require any active or passive cryogenic microwave equipment. We demonstrate all-optical single-shot readout in a circulator-free readout scheme. Importantly, we do not observe any direct radiation impact on the qubit state, 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, but it is also relevant for multiplexed readout of superconducting photon detectors and classical superconducting logic.","lang":"eng"}],"oa":1},{"related_material":{"record":[{"id":"19533","status":"public","relation":"dissertation_contains"}]},"date_created":"2025-03-02T23:01:52Z","author":[{"full_name":"Redchenko, Elena","first_name":"Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Zens","full_name":"Zens, M.","first_name":"M."},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","orcid":"0009-0005-0878-3032","first_name":"Martin","full_name":"Zemlicka, Martin"},{"full_name":"Peruzzo, Matilda","first_name":"Matilda","orcid":"0000-0002-3415-4628","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo"},{"orcid":"0000-0001-6937-5773","full_name":"Hassani, Farid","first_name":"Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0001-7641-8348","full_name":"Sett, Riya","first_name":"Riya","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","last_name":"Sett"},{"first_name":"Przemyslaw D","full_name":"Zielinski, Przemyslaw D","id":"e198fcc4-f6e0-11ea-865d-b6a256760ee8","last_name":"Zielinski"},{"first_name":"H. S.","full_name":"Dhar, H. S.","last_name":"Dhar"},{"full_name":"Krimer, D. O.","first_name":"D. O.","last_name":"Krimer"},{"full_name":"Rotter, S.","first_name":"S.","last_name":"Rotter"},{"full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"_id":"19280","volume":134,"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"day":"14","corr_author":"1","OA_place":"publisher","article_processing_charge":"Yes (via OA deal)","intvolume":"       134","language":[{"iso":"eng"}],"acknowledgement":"The authors thank G. Arnold and R. Sahu for the discussions, L. Drmic for software development, the MIBA workshop and the ISTA nanofabrication facility for technical support, and VTT Technical Research Centre of Finland for providing us TWPAs for follow-up measurements. This work was supported by the Austrian Science Fund (FWF) [Grant DOI: 10.55776/F71] through BeyondC (F7105) and IST Austria. E. S. R. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. J. M. F. and M. Ž. acknowledge support from the European Research Council under Grant Agreement No. 758053 (ERC StG QUNNECT) and a NOMIS foundation research grant.","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"year":"2025","publisher":"American Physical Society","issue":"6","article_number":"063601","status":"public","publication":"Physical Review Letters","OA_type":"hybrid","quality_controlled":"1","citation":{"short":"E. Redchenko, M. Zens, M. Zemlicka, M. Peruzzo, F. Hassani, R. Sett, P.D. Zielinski, H.S. Dhar, D.O. Krimer, S. Rotter, J.M. Fink, Physical Review Letters 134 (2025).","apa":"Redchenko, E., Zens, M., Zemlicka, M., Peruzzo, M., Hassani, F., Sett, R., … Fink, J. M. (2025). Observation of collapse and revival in a superconducting atomic frequency comb. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.134.063601\">https://doi.org/10.1103/PhysRevLett.134.063601</a>","chicago":"Redchenko, Elena, M. Zens, Martin Zemlicka, Matilda Peruzzo, Farid Hassani, Riya Sett, Przemyslaw D Zielinski, et al. “Observation of Collapse and Revival in a Superconducting Atomic Frequency Comb.” <i>Physical Review Letters</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/PhysRevLett.134.063601\">https://doi.org/10.1103/PhysRevLett.134.063601</a>.","ista":"Redchenko E, Zens M, Zemlicka M, Peruzzo M, Hassani F, Sett R, Zielinski PD, Dhar HS, Krimer DO, Rotter S, Fink JM. 2025. Observation of collapse and revival in a superconducting atomic frequency comb. Physical Review Letters. 134(6), 063601.","ama":"Redchenko E, Zens M, Zemlicka M, et al. Observation of collapse and revival in a superconducting atomic frequency comb. <i>Physical Review Letters</i>. 2025;134(6). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.134.063601\">10.1103/PhysRevLett.134.063601</a>","ieee":"E. Redchenko <i>et al.</i>, “Observation of collapse and revival in a superconducting atomic frequency comb,” <i>Physical Review Letters</i>, vol. 134, no. 6. American Physical Society, 2025.","mla":"Redchenko, Elena, et al. “Observation of Collapse and Revival in a Superconducting Atomic Frequency Comb.” <i>Physical Review Letters</i>, vol. 134, no. 6, 063601, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.134.063601\">10.1103/PhysRevLett.134.063601</a>."},"external_id":{"arxiv":["2310.04200"],"pmid":["40021171"],"isi":["001454696700003"]},"ec_funded":1,"department":[{"_id":"JoFi"}],"scopus_import":"1","ddc":["530"],"project":[{"grant_number":"F07105","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f"},{"_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits","call_identifier":"H2020","grant_number":"758053"},{"_id":"26B354CA-B435-11E9-9278-68D0E5697425","name":"Controllable Collective States of Superconducting Qubit Ensembles"}],"oa_version":"Published Version","type":"journal_article","isi":1,"has_accepted_license":"1","doi":"10.1103/PhysRevLett.134.063601","file_date_updated":"2025-03-04T10:40:50Z","publication_status":"published","arxiv":1,"file":[{"content_type":"application/pdf","date_updated":"2025-03-04T10:40:50Z","file_id":"19291","file_name":"2025_PhysReviewLetters_Redchenko.pdf","creator":"dernst","date_created":"2025-03-04T10:40:50Z","checksum":"633d6c5ddd9b805da22c5839d3d48df6","file_size":2080408,"relation":"main_file","access_level":"open_access","success":1}],"month":"02","pmid":1,"title":"Observation of collapse and revival in a superconducting atomic frequency comb","date_published":"2025-02-14T00:00:00Z","article_type":"original","date_updated":"2026-07-05T22:30:30Z","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"abstract":[{"text":"Recent advancements in superconducting circuits have enabled the experimental study of collective behavior of precisely controlled intermediate-scale ensembles of qubits. In this work, we demonstrate an atomic frequency comb formed by individual artificial atoms strongly coupled to a single resonator mode. We observe periodic microwave pulses that originate from a single coherent excitation dynamically interacting with the multiqubit ensemble. We show that this revival dynamics emerges as a consequence of the constructive and periodic rephasing of the five superconducting qubits forming the vacuum Rabi split comb. In the future, similar devices could be used as a memory with in situ tunable storage time or as an on-chip periodic pulse generator with nonclassical photon statistics.","lang":"eng"}],"oa":1},{"scopus_import":"1","department":[{"_id":"GeKa"},{"_id":"JoFi"},{"_id":"GradSch"}],"quality_controlled":"1","citation":{"mla":"Sagi, Oliver, et al. “A Gate Tunable Transmon Qubit in Planar Ge.” <i>Nature Communications</i>, vol. 15, 6400, Springer Nature, 2024, doi:<a href=\"https://doi.org/10.1038/s41467-024-50763-6\">10.1038/s41467-024-50763-6</a>.","ieee":"O. Sagi <i>et al.</i>, “A gate tunable transmon qubit in planar Ge,” <i>Nature Communications</i>, vol. 15. Springer Nature, 2024.","ama":"Sagi O, Crippa A, Valentini M, et al. A gate tunable transmon qubit in planar Ge. <i>Nature Communications</i>. 2024;15. doi:<a href=\"https://doi.org/10.1038/s41467-024-50763-6\">10.1038/s41467-024-50763-6</a>","chicago":"Sagi, Oliver, Alessandro Crippa, Marco Valentini, Marian Janik, Levon Baghumyan, Giorgio Fabris, Lucky Kapoor, et al. “A Gate Tunable Transmon Qubit in Planar Ge.” <i>Nature Communications</i>. Springer Nature, 2024. <a href=\"https://doi.org/10.1038/s41467-024-50763-6\">https://doi.org/10.1038/s41467-024-50763-6</a>.","ista":"Sagi O, Crippa A, Valentini M, Janik M, Baghumyan L, Fabris G, Kapoor L, Hassani F, Fink JM, Calcaterra S, Chrastina D, Isella G, Katsaros G. 2024. A gate tunable transmon qubit in planar Ge. Nature Communications. 15, 6400.","apa":"Sagi, O., Crippa, A., Valentini, M., Janik, M., Baghumyan, L., Fabris, G., … Katsaros, G. (2024). A gate tunable transmon qubit in planar Ge. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-024-50763-6\">https://doi.org/10.1038/s41467-024-50763-6</a>","short":"O. Sagi, A. Crippa, M. Valentini, M. Janik, L. Baghumyan, G. Fabris, L. Kapoor, F. Hassani, J.M. Fink, S. Calcaterra, D. Chrastina, G. Isella, G. Katsaros, Nature Communications 15 (2024)."},"publication":"Nature Communications","status":"public","OA_type":"gold","external_id":{"pmid":["39080279"],"arxiv":["2403.16774"],"isi":["001281271000022"]},"DOAJ_listed":"1","publisher":"Springer Nature","year":"2024","acknowledged_ssus":[{"_id":"ScienComp"},{"_id":"M-Shop"},{"_id":"NanoFab"}],"article_number":"6400","OA_place":"publisher","article_processing_charge":"Yes","intvolume":"        15","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","language":[{"iso":"eng"}],"acknowledgement":"We acknowledge Lucas Casparis, Jeroen Danon, Valla Fatemi, Morten Kjaergard and Javad Shabani for their valuable insights and comments. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop\r\nand the Nanofabrication facility. This research and related results were made possible with the support of the NOMIS Foundation and the FWF Projects with DOI:10.55776/I5060 and DOI:10.55776/P36507. We also acknowledge the NextGenerationEU PRIN project\r\n2022A8CJP3 (GAMESQUAD) for partial financial support.","corr_author":"1","day":"30","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"volume":15,"date_created":"2024-07-04T11:40:45Z","related_material":{"link":[{"url":"https://doi.org/10.1038/s41467-024-53910-1","relation":"erratum"}],"record":[{"id":"17196","status":"public","relation":"research_data"},{"id":"18076","status":"public","relation":"dissertation_contains"}]},"_id":"17202","author":[{"last_name":"Sagi","id":"71616374-A8E9-11E9-A7CA-09ECE5697425","first_name":"Oliver","full_name":"Sagi, Oliver"},{"last_name":"Crippa","id":"1F2B21A2-F6E7-11E9-9B82-F7DBE5697425","orcid":"0000-0002-2968-611X","first_name":"Alessandro","full_name":"Crippa, Alessandro"},{"full_name":"Valentini, Marco","first_name":"Marco","last_name":"Valentini","id":"C0BB2FAC-D767-11E9-B658-BC13E6697425"},{"last_name":"Janik","id":"396A1950-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0003-9037-8831","full_name":"Janik, Marian","first_name":"Marian"},{"full_name":"Baghumyan, Levon","first_name":"Levon","id":"7aa1f788-b527-11ee-aa9e-e6111a79e0c7","last_name":"Baghumyan"},{"last_name":"Fabris","id":"298cf6f3-1ff6-11ee-9fa6-d94cfa0b3352","full_name":"Fabris, Giorgio","first_name":"Giorgio"},{"id":"84b9700b-15b2-11ec-abd3-831089e67615","last_name":"Kapoor","orcid":"0000-0001-8319-2148","first_name":"Lucky","full_name":"Kapoor, Lucky"},{"orcid":"0000-0001-6937-5773","first_name":"Farid","full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X"},{"full_name":"Calcaterra, Stefano","first_name":"Stefano","last_name":"Calcaterra"},{"full_name":"Chrastina, Daniel","first_name":"Daniel","last_name":"Chrastina"},{"last_name":"Isella","first_name":"Giovanni","full_name":"Isella, Giovanni"},{"full_name":"Katsaros, Georgios","first_name":"Georgios","orcid":"0000-0001-8342-202X","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87"}],"oa":1,"abstract":[{"text":"Gate-tunable transmons (gatemons) employing semiconductor Josephson junctions have recently emerged as building blocks for hybrid quantum circuits. In this study, we present a gatemon fabricated in planar Germanium. We induce superconductivity in a two-dimensional hole gas by evaporating aluminum atop a thin spacer, which separates the superconductor from the Ge quantum well. The Josephson junction is then integrated into an Xmon circuit and capacitively coupled to a transmission line resonator. We showcase the qubit tunability in a broad frequency range with resonator and two-tone spectroscopy. Time-domain characterizations reveal energy relaxation and coherence times up to 75 ns. Our results, combined with the recent advances in the spin qubit field, pave the way towards novel hybrid and protected qubits in a group IV, CMOS-compatible material.","lang":"eng"}],"title":"A gate tunable transmon qubit in planar Ge","pmid":1,"date_updated":"2026-04-07T13:01:55Z","publication_identifier":{"eissn":["2041-1723"]},"date_published":"2024-07-30T00:00:00Z","article_type":"original","month":"07","file":[{"date_created":"2024-08-05T08:38:01Z","creator":"dernst","file_id":"17388","date_updated":"2024-08-05T08:38:01Z","file_name":"2024_NatureComm_Sagi.pdf","content_type":"application/pdf","success":1,"checksum":"ddf5361dcb6c543e2cea818501c09910","relation":"main_file","file_size":1928001,"access_level":"open_access"}],"doi":"10.1038/s41467-024-50763-6","publication_status":"published","file_date_updated":"2024-08-05T08:38:01Z","has_accepted_license":"1","APC_amount":"6828 EUR","arxiv":1,"oa_version":"Published Version","type":"journal_article","isi":1,"ddc":["530"],"project":[{"grant_number":"P36507","name":"Merging spin and superconducting qubits in planar Ge","_id":"bd8bd29e-d553-11ed-ba76-f0070d4b237a"},{"grant_number":"I05060","name":"High impedance circuit quantum electrodynamics with hole spins","_id":"c0977eea-5a5b-11eb-8a69-a862db0cf4d1"},{"_id":"262116AA-B435-11E9-9278-68D0E5697425","name":"Hybrid Semiconductor - Superconductor Quantum Devices"},{"call_identifier":"FWF","_id":"3AC91DDA-15DF-11EA-824D-93A3E7B544D1","name":"FWF Open Access Fund"}]},{"oa_version":"Published Version","isi":1,"type":"journal_article","file_date_updated":"2024-06-28T12:04:43Z","doi":"10.1103/prxquantum.5.010327","has_accepted_license":"1","publication_status":"published","arxiv":1,"APC_amount":"3782,54","ddc":["530"],"project":[{"name":"Quantum readout techniques and technologies","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","grant_number":"862644","call_identifier":"H2020"},{"call_identifier":"FWF","_id":"3AC91DDA-15DF-11EA-824D-93A3E7B544D1","name":"FWF Open Access Fund"},{"name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","grant_number":"F07105"}],"abstract":[{"text":"The photon blockade breakdown in a continuously driven cavity QED system has been proposed as a prime example for a first-order driven-dissipative quantum phase transition. However, the predicted scaling from a microscopic behavior—dominated by quantum fluctuations—to a macroscopic one—characterized by stable phases—and the associated exponents and phase diagram have not been observed so far. In this work we couple a single transmon qubit with a fixed coupling strength 𝑔 to a superconducting cavity that is in situ bandwidth 𝜅 tunable to controllably approach this thermodynamic limit. Even though the system remains microscopic, we observe its behavior becoming increasingly macroscopic as a function of 𝑔/𝜅. For the highest realized 𝑔/𝜅 of approximately 287, the system switches with a characteristic timescale as long as 6 s between a bright coherent state with approximately 8×103 intracavity photons and the vacuum state. This exceeds the microscopic timescales by 6 orders of magnitude and approaches the perfect hysteresis expected between two macroscopic attractors in the thermodynamic limit. These findings and interpretation are qualitatively supported by neoclassical theory and large-scale quantum-jump Monte Carlo simulations. Besides shedding more light on driven-dissipative physics in the limit of strong light-matter coupling, this system might also find applications in quantum sensing and metrology.","lang":"eng"}],"oa":1,"file":[{"success":1,"checksum":"0833880d47f74ad1deda93a1d8ffa5a7","access_level":"open_access","file_size":1443351,"relation":"main_file","date_updated":"2024-06-28T12:04:43Z","file_id":"17185","content_type":"application/pdf","file_name":"2024_PRXQuantum_Sett.pdf","creator":"cchlebak","date_created":"2024-06-28T12:04:43Z"}],"month":"02","title":"Emergent macroscopic bistability induced by a single superconducting qubit","date_published":"2024-02-16T00:00:00Z","article_type":"original","publication_identifier":{"eissn":["2691-3399"]},"date_updated":"2026-07-05T22:30:30Z","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"day":"16","corr_author":"1","related_material":{"record":[{"relation":"research_data","status":"public","id":"18978"},{"id":"19533","relation":"dissertation_contains","status":"public"}]},"date_created":"2024-06-27T10:58:06Z","author":[{"full_name":"Sett, Riya","first_name":"Riya","orcid":"0000-0001-7641-8348","last_name":"Sett","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","full_name":"Hassani, Farid","first_name":"Farid","orcid":"0000-0001-6937-5773"},{"first_name":"Duc T","full_name":"Phan, Duc T","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","last_name":"Phan"},{"last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","full_name":"Barzanjeh, Shabir","first_name":"Shabir","orcid":"0000-0003-0415-1423"},{"last_name":"Vukics","full_name":"Vukics, Andras","first_name":"Andras"},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"_id":"17183","volume":5,"OA_type":"gold","status":"public","publication":"PRX Quantum","citation":{"ama":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. Emergent macroscopic bistability induced by a single superconducting qubit. <i>PRX Quantum</i>. 2024;5(1). doi:<a href=\"https://doi.org/10.1103/prxquantum.5.010327\">10.1103/prxquantum.5.010327</a>","ieee":"R. Sett, F. Hassani, D. T. Phan, S. Barzanjeh, A. Vukics, and J. M. Fink, “Emergent macroscopic bistability induced by a single superconducting qubit,” <i>PRX Quantum</i>, vol. 5, no. 1. American Physical Society, 2024.","mla":"Sett, Riya, et al. “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” <i>PRX Quantum</i>, vol. 5, no. 1, 010327, American Physical Society, 2024, doi:<a href=\"https://doi.org/10.1103/prxquantum.5.010327\">10.1103/prxquantum.5.010327</a>.","apa":"Sett, R., Hassani, F., Phan, D. T., Barzanjeh, S., Vukics, A., &#38; Fink, J. M. (2024). Emergent macroscopic bistability induced by a single superconducting qubit. <i>PRX Quantum</i>. American Physical Society. <a href=\"https://doi.org/10.1103/prxquantum.5.010327\">https://doi.org/10.1103/prxquantum.5.010327</a>","short":"R. Sett, F. Hassani, D.T. Phan, S. Barzanjeh, A. Vukics, J.M. Fink, PRX Quantum 5 (2024).","ista":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. 2024. Emergent macroscopic bistability induced by a single superconducting qubit. PRX Quantum. 5(1), 010327.","chicago":"Sett, Riya, Farid Hassani, Duc T Phan, Shabir Barzanjeh, Andras Vukics, and Johannes M Fink. “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” <i>PRX Quantum</i>. American Physical Society, 2024. <a href=\"https://doi.org/10.1103/prxquantum.5.010327\">https://doi.org/10.1103/prxquantum.5.010327</a>."},"quality_controlled":"1","external_id":{"isi":["001171652500001"],"arxiv":["2210.14182"]},"ec_funded":1,"department":[{"_id":"JoFi"},{"_id":"AnHi"}],"scopus_import":"1","intvolume":"         5","OA_place":"publisher","article_processing_charge":"Yes","language":[{"iso":"eng"}],"acknowledgement":"This work has received funding from the Austrian Science Fund (FWF) through BeyondC (F7105) and the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 862644 (FETopen QUARTET). A.V. acknowledges support from the National Research, Development and Innovation Office of Hungary (NKFIH) within the Quantum Information National Laboratory of Hungary. The authors thank the MIBA workshop and the Institute of Science and Technology Austria nanofabrication facility for technical support. We are grateful to HUN-REN Cloud for providing us with suitable computational infrastructure for the simulations.","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2024","publisher":"American Physical Society","acknowledged_ssus":[{"_id":"M-Shop"}],"DOAJ_listed":"1","article_number":"010327","issue":"1"},{"status":"public","OA_type":"gold","citation":{"ieee":"R. Sett, F. Hassani, D. T. Phan, S. Barzanjeh, A. Vukics, and J. M. Fink, “Data Analysis files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.’” Zenodo, 2024.","mla":"Sett, Riya, et al. <i>Data Analysis Files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.”</i> Zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/ZENODO.10518320\">10.5281/ZENODO.10518320</a>.","ama":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. Data Analysis files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” 2024. doi:<a href=\"https://doi.org/10.5281/ZENODO.10518320\">10.5281/ZENODO.10518320</a>","chicago":"Sett, Riya, Farid Hassani, Duc T Phan, Shabir Barzanjeh, Andras Vukics, and Johannes M Fink. “Data Analysis Files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.’” Zenodo, 2024. <a href=\"https://doi.org/10.5281/ZENODO.10518320\">https://doi.org/10.5281/ZENODO.10518320</a>.","ista":"Sett R, Hassani F, Phan DT, Barzanjeh S, Vukics A, Fink JM. 2024. Data Analysis files for ‘Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit’, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.10518320\">10.5281/ZENODO.10518320</a>.","apa":"Sett, R., Hassani, F., Phan, D. T., Barzanjeh, S., Vukics, A., &#38; Fink, J. M. (2024). Data Analysis files for “Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit.” Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.10518320\">https://doi.org/10.5281/ZENODO.10518320</a>","short":"R. Sett, F. Hassani, D.T. Phan, S. Barzanjeh, A. Vukics, J.M. Fink, (2024)."},"department":[{"_id":"JoFi"},{"_id":"AnHi"}],"abstract":[{"lang":"eng","text":"Data analysis files for the manuscript \"Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit\".\r\n\r\nThis contains the raw data and the data analysis files for generating the figures in the manuscript.\r\n\r\n Figure1 file - The raw data of cavity transmission spectra for 6 different kappas are there. They are fitted with input-output theory in the python file.\r\n Figure2 file - The raw data at 8 MHz kappa are included. all hte figures in figure 2 are generated in the python file\r\n Figure3 file - The raw data of PBB single shot measurements at all kappas are included. The detailed analysis and the Figure3 generated for the paper are all in the python analysis file. Also, thefiles containing the time-evolution of the intensity from Master Equation solution are included.\r\nFigure4 file - The raw data at 2.6 MHz for different drive detunings and the corresponding analyses are included. And the python file includes the analysis of the experimental data as well as approximate neoclassical equations solutions for 2-level and 3-level transmons are included.  "}],"oa":1,"month":"01","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","OA_place":"repository","date_published":"2024-01-16T00:00:00Z","date_updated":"2026-07-05T22:30:29Z","publisher":"Zenodo","year":"2024","title":"Data Analysis files for \"Emergent Macroscopic Bistability Induced by a Single Superconducting Qubit\"","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"type":"research_data_reference","main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/zenodo.10518320"}],"oa_version":"Published Version","day":"16","corr_author":"1","doi":"10.5281/ZENODO.10518320","has_accepted_license":"1","author":[{"orcid":"0000-0001-7641-8348","first_name":"Riya","full_name":"Sett, Riya","last_name":"Sett","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Farid","full_name":"Hassani, Farid","orcid":"0000-0001-6937-5773","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Phan","id":"29C8C0B4-F248-11E8-B48F-1D18A9856A87","first_name":"Duc T","full_name":"Phan, Duc T"},{"orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir","first_name":"Shabir","last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Vukics, Andras","first_name":"Andras","last_name":"Vukics"},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"_id":"18978","ddc":["530"],"related_material":{"record":[{"status":"public","relation":"used_in_publication","id":"17183"},{"id":"19533","status":"public","relation":"used_in_publication"}]},"date_created":"2025-01-30T08:30:03Z"},{"volume":380,"_id":"13106","author":[{"id":"47D26E34-F248-11E8-B48F-1D18A9856A87","last_name":"Sahu","orcid":"0000-0001-6264-2162","full_name":"Sahu, Rishabh","first_name":"Rishabh"},{"last_name":"Qiu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","full_name":"Qiu, Liu","first_name":"Liu","orcid":"0000-0003-4345-4267"},{"orcid":"0000-0001-9868-2166","first_name":"William J","full_name":"Hease, William J","last_name":"Hease","id":"29705398-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0003-1397-7876","full_name":"Arnold, Georg M","first_name":"Georg M","last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Minoguchi","first_name":"Y.","full_name":"Minoguchi, Y."},{"last_name":"Rabl","full_name":"Rabl, P.","first_name":"P."},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"page":"718-721","date_created":"2023-05-31T11:39:24Z","related_material":{"link":[{"relation":"press_release","description":"News on ISTA Website","url":"https://ista.ac.at/en/news/wiring-up-quantum-circuits-with-light/"}],"record":[{"id":"13122","status":"public","relation":"research_data"}]},"corr_author":"1","day":"18","issue":"6646","publisher":"American Association for the Advancement of Science","year":"2023","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"acknowledgement":"This work was supported by the European Research Council (grant no. 758053, ERC StG QUNNECT) and the European Union’s Horizon 2020 Research and Innovation Program (grant no. 899354, FETopen SuperQuLAN). L.Q. acknowledges generous support from the ISTFELLOW program. W.H. is the recipient of an ISTplus postdoctoral fellowship with funding from the European Union’s Horizon 2020 Research and Innovation Program (Marie Sklodowska-Curie grant no. 754411). G.A. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria. J.M.F. acknowledges support from the Austrian Science Fund (FWF) through BeyondC (grant no. F7105) and the European Union’s Horizon 2020 Research and Innovation Program (grant no. 862644, FETopen QUARTET).","intvolume":"       380","article_processing_charge":"No","scopus_import":"1","department":[{"_id":"JoFi"}],"ec_funded":1,"external_id":{"isi":["000996515200004"],"pmid":["37200415"],"arxiv":["2301.03315"]},"quality_controlled":"1","citation":{"ama":"Sahu R, Qiu L, Hease WJ, et al. Entangling microwaves with light. <i>Science</i>. 2023;380(6646):718-721. doi:<a href=\"https://doi.org/10.1126/science.adg3812\">10.1126/science.adg3812</a>","ieee":"R. Sahu <i>et al.</i>, “Entangling microwaves with light,” <i>Science</i>, vol. 380, no. 6646. American Association for the Advancement of Science, pp. 718–721, 2023.","mla":"Sahu, Rishabh, et al. “Entangling Microwaves with Light.” <i>Science</i>, vol. 380, no. 6646, American Association for the Advancement of Science, 2023, pp. 718–21, doi:<a href=\"https://doi.org/10.1126/science.adg3812\">10.1126/science.adg3812</a>.","apa":"Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &#38; Fink, J. M. (2023). Entangling microwaves with light. <i>Science</i>. American Association for the Advancement of Science. <a href=\"https://doi.org/10.1126/science.adg3812\">https://doi.org/10.1126/science.adg3812</a>","short":"R. Sahu, L. Qiu, W.J. Hease, G.M. Arnold, Y. Minoguchi, P. Rabl, J.M. Fink, Science 380 (2023) 718–721.","ista":"Sahu R, Qiu L, Hease WJ, Arnold GM, Minoguchi Y, Rabl P, Fink JM. 2023. Entangling microwaves with light. Science. 380(6646), 718–721.","chicago":"Sahu, Rishabh, Liu Qiu, William J Hease, Georg M Arnold, Y. Minoguchi, P. Rabl, and Johannes M Fink. “Entangling Microwaves with Light.” <i>Science</i>. American Association for the Advancement of Science, 2023. <a href=\"https://doi.org/10.1126/science.adg3812\">https://doi.org/10.1126/science.adg3812</a>."},"status":"public","publication":"Science","project":[{"call_identifier":"H2020","grant_number":"758053","_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"grant_number":"899354","call_identifier":"H2020","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","name":"Quantum Local Area Networks with Superconducting Qubits"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411"},{"grant_number":"862644","call_identifier":"H2020","_id":"237CBA6C-32DE-11EA-91FC-C7463DDC885E","name":"Quantum readout techniques and technologies"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"},{"_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","grant_number":"F07105"}],"keyword":["Multidisciplinary"],"arxiv":1,"doi":"10.1126/science.adg3812","publication_status":"published","type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2301.03315"}],"isi":1,"oa_version":"Preprint","publication_identifier":{"eissn":["1095-9203"],"issn":["0036-8075"]},"date_updated":"2026-04-15T06:39:33Z","date_published":"2023-05-18T00:00:00Z","article_type":"original","title":"Entangling microwaves with light","pmid":1,"month":"05","oa":1,"abstract":[{"lang":"eng","text":"Quantum entanglement is a key resource in currently developed quantum technologies. Sharing this fragile property between superconducting microwave circuits and optical or atomic systems would enable new functionalities, but this has been hindered by an energy scale mismatch of >104 and the resulting mutually imposed loss and noise. In this work, we created and verified entanglement between microwave and optical fields in a millikelvin environment. Using an optically pulsed superconducting electro-optical device, we show entanglement between propagating microwave and optical fields in the continuous variable domain. This achievement not only paves the way for entanglement between superconducting circuits and telecom wavelength light, but also has wide-ranging implications for hybrid quantum networks in the context of modularization, scaling, sensing, and cross-platform verification."}]},{"doi":"10.5281/ZENODO.7858567","day":"28","corr_author":"1","oa_version":"Published Version","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"type":"research_data_reference","main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/zenodo.7858567"}],"ddc":["530"],"related_material":{"record":[{"id":"13117","relation":"used_in_publication","status":"public"}]},"date_created":"2023-06-06T07:36:50Z","author":[{"full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"last_name":"Poshakinskiy","first_name":"Alexander","full_name":"Poshakinskiy, Alexander"},{"first_name":"Riya","full_name":"Sett, Riya","orcid":"0000-0001-7641-8348","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","last_name":"Sett"},{"orcid":"0009-0005-0878-3032","first_name":"Martin","full_name":"Zemlicka, Martin","last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Poddubny","first_name":"Alexander","full_name":"Poddubny, Alexander"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"_id":"13124","abstract":[{"text":"This dataset comprises all data shown in the figures of the submitted article \"Tunable directional photon scattering from a pair of superconducting qubits\" at arXiv:2205.03293. Additional raw data are available from the corresponding author on reasonable request.","lang":"eng"}],"oa":1,"department":[{"_id":"JoFi"}],"status":"public","citation":{"ista":"Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. 2023. Tunable directional photon scattering from a pair of superconducting qubits, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>.","chicago":"Redchenko, Elena, Alexander Poshakinskiy, Riya Sett, Martin Zemlicka, Alexander Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering from a Pair of Superconducting Qubits.” Zenodo, 2023. <a href=\"https://doi.org/10.5281/ZENODO.7858567\">https://doi.org/10.5281/ZENODO.7858567</a>.","short":"E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, J.M. Fink, (2023).","apa":"Redchenko, E., Poshakinskiy, A., Sett, R., Zemlicka, M., Poddubny, A., &#38; Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting qubits. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.7858567\">https://doi.org/10.5281/ZENODO.7858567</a>","ieee":"E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, and J. M. Fink, “Tunable directional photon scattering from a pair of superconducting qubits.” Zenodo, 2023.","mla":"Redchenko, Elena, et al. <i>Tunable Directional Photon Scattering from a Pair of Superconducting Qubits</i>. Zenodo, 2023, doi:<a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>.","ama":"Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. Tunable directional photon scattering from a pair of superconducting qubits. 2023. doi:<a href=\"https://doi.org/10.5281/ZENODO.7858567\">10.5281/ZENODO.7858567</a>"},"publisher":"Zenodo","year":"2023","title":"Tunable directional photon scattering from a pair of superconducting qubits","date_published":"2023-04-28T00:00:00Z","date_updated":"2026-06-03T07:16:05Z","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"04"},{"date_updated":"2026-04-15T06:39:57Z","publication_identifier":{"eissn":["2041-1723"]},"date_published":"2023-07-05T00:00:00Z","article_type":"original","title":"Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours","pmid":1,"month":"07","file":[{"success":1,"access_level":"open_access","relation":"main_file","file_size":2899592,"checksum":"a85773b5fe23516f60f7d5d31b55c200","date_updated":"2023-07-18T08:43:07Z","content_type":"application/pdf","file_id":"13248","file_name":"2023_NatureComm_Hassani.pdf","date_created":"2023-07-18T08:43:07Z","creator":"dernst"}],"oa":1,"abstract":[{"lang":"eng","text":"Currently available quantum processors are dominated by noise, which severely limits their applicability and motivates the search for new physical qubit encodings. In this work, we introduce the inductively shunted transmon, a weakly flux-tunable superconducting qubit that offers charge offset protection for all levels and a 20-fold reduction in flux dispersion compared to the state-of-the-art resulting in a constant coherence over a full flux quantum. The parabolic confinement provided by the inductive shunt as well as the linearity of the geometric superinductor facilitates a high-power readout that resolves quantum jumps with a fidelity and QND-ness of >90% and without the need for a Josephson parametric amplifier. Moreover, the device reveals quantum tunneling physics between the two prepared fluxon ground states with a measured average decay time of up to 3.5 h. In the future, fast time-domain control of the transition matrix elements could offer a new path forward to also achieve full qubit control in the decay-protected fluxon basis."}],"project":[{"name":"Hybrid Semiconductor - Superconductor Quantum Devices","_id":"2622978C-B435-11E9-9278-68D0E5697425"},{"grant_number":"F07105","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits"}],"ddc":["530"],"publication_status":"published","has_accepted_license":"1","doi":"10.1038/s41467-023-39656-2","file_date_updated":"2023-07-18T08:43:07Z","isi":1,"type":"journal_article","oa_version":"Published Version","article_number":"3968","publisher":"Springer Nature","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"year":"2023","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","acknowledgement":"The authors thank J. Koch for discussions and support with the scQubits python package, I. Rozhansky and A. Poddubny for important insights into photon-assisted tunneling, S. Barzanjeh and G. Arnold for theory, E. Redchenko, S. Pepic, the MIBA workshop and the IST nanofabrication facility for technical contributions, as well as L. Drmic, P. Zielinski and R. Sett for software development. We acknowledge the prompt support of Quantum Machines to implement active state preparation with their OPX+. This work was supported by a NOMIS foundation research grant (J.F.), the Austrian Science Fund (FWF) through BeyondC F7105 (J.F.) and IST Austria.","language":[{"iso":"eng"}],"article_processing_charge":"No","intvolume":"        14","scopus_import":"1","department":[{"_id":"JoFi"}],"external_id":{"isi":["001024729900009"],"pmid":["37407570"]},"quality_controlled":"1","citation":{"short":"F. Hassani, M. Peruzzo, L. Kapoor, A. Trioni, M. Zemlicka, J.M. Fink, Nature Communications 14 (2023).","apa":"Hassani, F., Peruzzo, M., Kapoor, L., Trioni, A., Zemlicka, M., &#38; Fink, J. M. (2023). Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-023-39656-2\">https://doi.org/10.1038/s41467-023-39656-2</a>","ista":"Hassani F, Peruzzo M, Kapoor L, Trioni A, Zemlicka M, Fink JM. 2023. Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours. Nature Communications. 14, 3968.","chicago":"Hassani, Farid, Matilda Peruzzo, Lucky Kapoor, Andrea Trioni, Martin Zemlicka, and Johannes M Fink. “Inductively Shunted Transmons Exhibit Noise Insensitive Plasmon States and a Fluxon Decay Exceeding 3 Hours.” <i>Nature Communications</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1038/s41467-023-39656-2\">https://doi.org/10.1038/s41467-023-39656-2</a>.","ama":"Hassani F, Peruzzo M, Kapoor L, Trioni A, Zemlicka M, Fink JM. Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours. <i>Nature Communications</i>. 2023;14. doi:<a href=\"https://doi.org/10.1038/s41467-023-39656-2\">10.1038/s41467-023-39656-2</a>","ieee":"F. Hassani, M. Peruzzo, L. Kapoor, A. Trioni, M. Zemlicka, and J. M. Fink, “Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours,” <i>Nature Communications</i>, vol. 14. Springer Nature, 2023.","mla":"Hassani, Farid, et al. “Inductively Shunted Transmons Exhibit Noise Insensitive Plasmon States and a Fluxon Decay Exceeding 3 Hours.” <i>Nature Communications</i>, vol. 14, 3968, Springer Nature, 2023, doi:<a href=\"https://doi.org/10.1038/s41467-023-39656-2\">10.1038/s41467-023-39656-2</a>."},"publication":"Nature Communications","status":"public","volume":14,"_id":"13227","author":[{"orcid":"0000-0001-6937-5773","first_name":"Farid","full_name":"Hassani, Farid","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0002-3415-4628","full_name":"Peruzzo, Matilda","first_name":"Matilda","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo"},{"last_name":"Kapoor","id":"84b9700b-15b2-11ec-abd3-831089e67615","orcid":"0000-0001-8319-2148","first_name":"Lucky","full_name":"Kapoor, Lucky"},{"last_name":"Trioni","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","first_name":"Andrea","full_name":"Trioni, Andrea"},{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","orcid":"0009-0005-0878-3032","full_name":"Zemlicka, Martin","first_name":"Martin"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"date_created":"2023-07-16T22:01:08Z","related_material":{"record":[{"id":"17133","status":"public","relation":"dissertation_contains"}]},"corr_author":"1","day":"05","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"}},{"volume":20,"author":[{"id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka","orcid":"0009-0005-0878-3032","first_name":"Martin","full_name":"Zemlicka, Martin"},{"full_name":"Redchenko, Elena","first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"orcid":"0000-0002-3415-4628","first_name":"Matilda","full_name":"Peruzzo, Matilda","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","last_name":"Peruzzo"},{"orcid":"0000-0001-6937-5773","first_name":"Farid","full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","last_name":"Hassani"},{"full_name":"Trioni, Andrea","first_name":"Andrea","id":"42F71B44-F248-11E8-B48F-1D18A9856A87","last_name":"Trioni"},{"last_name":"Barzanjeh","id":"2D25E1F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0415-1423","full_name":"Barzanjeh, Shabir","first_name":"Shabir"},{"orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"_id":"14517","related_material":{"record":[{"relation":"research_data","status":"public","id":"14520"}]},"date_created":"2023-11-12T23:00:55Z","day":"20","corr_author":"1","issue":"4","article_number":"044054","acknowledged_ssus":[{"_id":"NanoFab"}],"year":"2023","publisher":"American Physical Society","language":[{"iso":"eng"}],"acknowledgement":"This work was supported by the Austrian Science Fund (FWF) through BeyondC (F7105), the European Research Council under Grant Agreement No. 758053 (ERC StG QUNNECT) and a NOMIS foundation research grant. M.Z. was the recipient of a SAIA scholarship, E.R. of\r\na DOC fellowship of the Austrian Academy of Sciences, and M.P. of a Pöttinger scholarship at IST Austria. S.B. acknowledges support from Marie Skłodowska Curie Program No. 707438 (MSC-IF SUPEREOM). J.M.F. acknowledges support from the Horizon Europe Program HORIZON-CL4-2022-QUANTUM-01-SGA via Project No. 101113946 OpenSuperQPlus100 and the ISTA Nanofabrication Facility.","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","intvolume":"        20","department":[{"_id":"JoFi"}],"scopus_import":"1","ec_funded":1,"external_id":{"isi":["001095315600001"],"arxiv":["2206.14104"]},"publication":"Physical Review Applied","status":"public","citation":{"ama":"Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. <i>Physical Review Applied</i>. 2023;20(4). doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">10.1103/PhysRevApplied.20.044054</a>","ieee":"M. Zemlicka <i>et al.</i>, “Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses,” <i>Physical Review Applied</i>, vol. 20, no. 4. American Physical Society, 2023.","mla":"Zemlicka, Martin, et al. “Compact Vacuum-Gap Transmon Qubits: Selective and Sensitive Probes for Superconductor Surface Losses.” <i>Physical Review Applied</i>, vol. 20, no. 4, 044054, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">10.1103/PhysRevApplied.20.044054</a>.","apa":"Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh, S., &#38; Fink, J. M. (2023). Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. <i>Physical Review Applied</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">https://doi.org/10.1103/PhysRevApplied.20.044054</a>","short":"M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh, J.M. Fink, Physical Review Applied 20 (2023).","ista":"Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink JM. 2023. Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses. Physical Review Applied. 20(4), 044054.","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.” <i>Physical Review Applied</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevApplied.20.044054\">https://doi.org/10.1103/PhysRevApplied.20.044054</a>."},"quality_controlled":"1","project":[{"grant_number":"758053","call_identifier":"H2020","_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"},{"call_identifier":"H2020","grant_number":"707438","name":"Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination with cavity Optomechanics","_id":"258047B6-B435-11E9-9278-68D0E5697425"},{"_id":"bdb7cfc1-d553-11ed-ba76-d2eaab167738","name":"Open Superconducting Quantum Computers (OpenSuperQPlus)","grant_number":"101080139"},{"_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","grant_number":"F07105"}],"arxiv":1,"doi":"10.1103/PhysRevApplied.20.044054","publication_status":"published","type":"journal_article","main_file_link":[{"url":"https://arxiv.org/abs/2206.14104","open_access":"1"}],"isi":1,"oa_version":"Preprint","article_type":"original","date_published":"2023-10-20T00:00:00Z","publication_identifier":{"eissn":["2331-7019"]},"date_updated":"2026-06-03T07:16:02Z","title":"Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses","month":"10","abstract":[{"text":"State-of-the-art transmon qubits rely on large capacitors, which systematically improve their coherence due to reduced surface-loss participation. However, this approach increases both the footprint and the parasitic cross-coupling and is ultimately limited by radiation losses—a potential roadblock for scaling up quantum processors to millions of qubits. In this work we present transmon qubits with sizes as low as 36 × 39 µm2 with  100-nm-wide vacuum-gap capacitors that are micromachined from commercial silicon-on-insulator wafers and shadow evaporated with aluminum. We achieve a vacuum participation ratio up to 99.6% in an in-plane design that is compatible with standard coplanar circuits. Qubit relaxationtime measurements for small gaps with high zero-point electric field variance of up to 22 V/m reveal a double exponential decay indicating comparably strong qubit interaction with long-lived two-level systems. The exceptionally high selectivity of up to 20 dB to the superconductor-vacuum interface allows us to precisely back out the sub-single-photon dielectric loss tangent of aluminum oxide previously exposed to ambient conditions. In terms of future scaling potential, we achieve a ratio of qubit quality factor to a footprint area equal to 20 µm−2, which is comparable with the highest T1 devices relying on larger geometries, a value that could improve substantially for lower surface-loss superconductors. ","lang":"eng"}],"oa":1},{"quality_controlled":"1","citation":{"short":"R. Sahu, L. Qiu, W.J. Hease, G.M. Arnold, Y. Minoguchi, P. Rabl, J.M. Fink, in:, Frontiers in Optics + Laser Science 2023, Optica Publishing Group, 2023.","apa":"Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &#38; Fink, J. M. (2023). Entangling microwaves and telecom wavelength light. In <i>Frontiers in Optics + Laser Science 2023</i>. Tacoma, WA, United States: Optica Publishing Group. <a href=\"https://doi.org/10.1364/ls.2023.lm1f.3\">https://doi.org/10.1364/ls.2023.lm1f.3</a>","ista":"Sahu R, Qiu L, Hease WJ, Arnold GM, Minoguchi Y, Rabl P, Fink JM. 2023. Entangling microwaves and telecom wavelength light. Frontiers in Optics + Laser Science 2023. Laser Science, LM1F.3.","chicago":"Sahu, Rishabh, Liu Qiu, William J Hease, Georg M Arnold, Yuri Minoguchi, Peter Rabl, and Johannes M Fink. “Entangling Microwaves and Telecom Wavelength Light.” In <i>Frontiers in Optics + Laser Science 2023</i>. Optica Publishing Group, 2023. <a href=\"https://doi.org/10.1364/ls.2023.lm1f.3\">https://doi.org/10.1364/ls.2023.lm1f.3</a>.","ama":"Sahu R, Qiu L, Hease WJ, et al. Entangling microwaves and telecom wavelength light. In: <i>Frontiers in Optics + Laser Science 2023</i>. Optica Publishing Group; 2023. doi:<a href=\"https://doi.org/10.1364/ls.2023.lm1f.3\">10.1364/ls.2023.lm1f.3</a>","ieee":"R. Sahu <i>et al.</i>, “Entangling microwaves and telecom wavelength light,” in <i>Frontiers in Optics + Laser Science 2023</i>, Tacoma, WA, United States, 2023.","mla":"Sahu, Rishabh, et al. “Entangling Microwaves and Telecom Wavelength Light.” <i>Frontiers in Optics + Laser Science 2023</i>, LM1F.3, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ls.2023.lm1f.3\">10.1364/ls.2023.lm1f.3</a>."},"status":"public","publication":"Frontiers in Optics + Laser Science 2023","department":[{"_id":"JoFi"}],"abstract":[{"lang":"eng","text":"We entangled microwave and optical photons for the first time as verified by a measured two-mode vacuum squeezing of 0.7 dB. This electro-optic entanglement is the key resource needed to connect cryogenic quantum circuits."}],"month":"10","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"article_processing_charge":"No","publication_identifier":{"isbn":["9781957171296"]},"article_number":"LM1F.3","date_updated":"2024-10-09T21:07:59Z","date_published":"2023-10-01T00:00:00Z","title":"Entangling microwaves and telecom wavelength light","year":"2023","publisher":"Optica Publishing Group","type":"conference","oa_version":"None","corr_author":"1","day":"01","publication_status":"published","doi":"10.1364/ls.2023.lm1f.3","_id":"14872","author":[{"orcid":"0000-0001-6264-2162","full_name":"Sahu, Rishabh","first_name":"Rishabh","id":"47D26E34-F248-11E8-B48F-1D18A9856A87","last_name":"Sahu"},{"full_name":"Qiu, Liu","first_name":"Liu","last_name":"Qiu"},{"last_name":"Hease","id":"29705398-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9868-2166","full_name":"Hease, William J","first_name":"William J"},{"first_name":"Georg M","full_name":"Arnold, Georg M","orcid":"0000-0003-1397-7876","id":"3770C838-F248-11E8-B48F-1D18A9856A87","last_name":"Arnold"},{"full_name":"Minoguchi, Yuri","first_name":"Yuri","last_name":"Minoguchi"},{"first_name":"Peter","full_name":"Rabl, Peter","last_name":"Rabl"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"date_created":"2024-01-22T12:29:41Z","conference":{"location":"Tacoma, WA, United States","end_date":"2023-10-12","start_date":"2023-10-09","name":"Laser Science"}},{"intvolume":"        14","OA_place":"publisher","article_processing_charge":"Yes","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"acknowledgement":"This work was supported by the European Research Council under grant agreement no. 758053 (ERC StG QUNNECT), the European Union’s Horizon 2020 research and innovation program under grant agreement no. 899354 (FETopen SuperQuLAN), and the Austrian Science Fund (FWF) through BeyondC (F7105). L.Q. acknowledges generous support from the ISTFELLOW programme. W.H. is the recipient of an ISTplus postdoctoral fellowship with funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement no. 754411. G.A. is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.","DOAJ_listed":"1","publisher":"Nature Research","year":"2023","article_number":"3784","citation":{"apa":"Qiu, L., Sahu, R., Hease, W. J., Arnold, G. M., &#38; Fink, J. M. (2023). Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action. <i>Nature Communications</i>. Nature Research. <a href=\"https://doi.org/10.1038/s41467-023-39493-3\">https://doi.org/10.1038/s41467-023-39493-3</a>","short":"L. Qiu, R. Sahu, W.J. Hease, G.M. Arnold, J.M. Fink, Nature Communications 14 (2023).","ista":"Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. 2023. Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action. Nature Communications. 14, 3784.","chicago":"Qiu, Liu, Rishabh Sahu, William J Hease, Georg M Arnold, and Johannes M Fink. “Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical Dynamical Back-Action.” <i>Nature Communications</i>. Nature Research, 2023. <a href=\"https://doi.org/10.1038/s41467-023-39493-3\">https://doi.org/10.1038/s41467-023-39493-3</a>.","ama":"Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action. <i>Nature Communications</i>. 2023;14. doi:<a href=\"https://doi.org/10.1038/s41467-023-39493-3\">10.1038/s41467-023-39493-3</a>","mla":"Qiu, Liu, et al. “Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical Dynamical Back-Action.” <i>Nature Communications</i>, vol. 14, 3784, Nature Research, 2023, doi:<a href=\"https://doi.org/10.1038/s41467-023-39493-3\">10.1038/s41467-023-39493-3</a>.","ieee":"L. Qiu, R. Sahu, W. J. Hease, G. M. Arnold, and J. M. Fink, “Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action,” <i>Nature Communications</i>, vol. 14. Nature Research, 2023."},"quality_controlled":"1","status":"public","OA_type":"gold","publication":"Nature Communications","external_id":{"isi":["001018100800002"],"pmid":["37355691"],"arxiv":["2210.12443"]},"ec_funded":1,"scopus_import":"1","department":[{"_id":"JoFi"}],"date_created":"2023-07-09T22:01:11Z","related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"18871"}]},"_id":"13200","author":[{"orcid":"0000-0003-4345-4267","full_name":"Qiu, Liu","first_name":"Liu","last_name":"Qiu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac"},{"full_name":"Sahu, Rishabh","first_name":"Rishabh","orcid":"0000-0001-6264-2162","last_name":"Sahu","id":"47D26E34-F248-11E8-B48F-1D18A9856A87"},{"first_name":"William J","full_name":"Hease, William J","orcid":"0000-0001-9868-2166","id":"29705398-F248-11E8-B48F-1D18A9856A87","last_name":"Hease"},{"orcid":"0000-0003-1397-7876","full_name":"Arnold, Georg M","first_name":"Georg M","id":"3770C838-F248-11E8-B48F-1D18A9856A87","last_name":"Arnold"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M"}],"volume":14,"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"corr_author":"1","day":"24","month":"06","file":[{"success":1,"relation":"main_file","access_level":"open_access","file_size":1349134,"checksum":"ec7ccd2c08f90d59cab302fd0d7776a4","creator":"alisjak","date_created":"2023-07-10T10:10:54Z","file_id":"13206","file_name":"2023_NatureComms_Qiu.pdf","content_type":"application/pdf","date_updated":"2023-07-10T10:10:54Z"}],"title":"Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action","pmid":1,"publication_identifier":{"eissn":["2041-1723"]},"date_updated":"2026-07-05T22:30:25Z","article_type":"original","date_published":"2023-06-24T00:00:00Z","oa":1,"abstract":[{"lang":"eng","text":"Recent quantum technologies have established precise quantum control of various microscopic systems using electromagnetic waves. Interfaces based on cryogenic cavity electro-optic systems are particularly promising, due to the direct interaction between microwave and optical fields in the quantum regime. Quantum optical control of superconducting microwave circuits has been precluded so far due to the weak electro-optical coupling as well as quasi-particles induced by the pump laser. Here we report the coherent control of a superconducting microwave cavity using laser pulses in a multimode electro-optical device at millikelvin temperature with near-unity cooperativity. Both the stationary and instantaneous responses of the microwave and optical modes comply with the coherent electro-optical interaction, and reveal only minuscule amount of excess back-action with an unanticipated time delay. Our demonstration enables wide ranges of applications beyond quantum transductions, from squeezing and quantum non-demolition measurements of microwave fields, to entanglement generation and hybrid quantum networks."}],"ddc":["000"],"project":[{"name":"A Fiber Optic Transceiver for Superconducting Qubits","_id":"26336814-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"758053"},{"grant_number":"899354","call_identifier":"H2020","name":"Quantum Local Area Networks with Superconducting Qubits","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A"},{"name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","grant_number":"F07105"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411"},{"call_identifier":"FP7","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FWF","name":"FWF Open Access Fund","_id":"3AC91DDA-15DF-11EA-824D-93A3E7B544D1"}],"oa_version":"Published Version","isi":1,"type":"journal_article","file_date_updated":"2023-07-10T10:10:54Z","publication_status":"published","doi":"10.1038/s41467-023-39493-3","has_accepted_license":"1","APC_amount":"6228 EUR","arxiv":1},{"_id":"18953","author":[{"full_name":"Arnold, Georg M","first_name":"Georg M","orcid":"0000-0003-1397-7876","last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Werner, Thomas","first_name":"Thomas","orcid":"0009-0001-2346-5236","id":"1fcd8497-dba3-11ea-a45e-c6fbd715f7c7","last_name":"Werner"},{"first_name":"Rishabh","full_name":"Sahu, Rishabh","orcid":"0000-0001-6264-2162","id":"47D26E34-F248-11E8-B48F-1D18A9856A87","last_name":"Sahu"},{"orcid":"0000-0001-8319-2148","full_name":"Kapoor, Lucky","first_name":"Lucky","id":"84b9700b-15b2-11ec-abd3-831089e67615","last_name":"Kapoor"},{"id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","last_name":"Qiu","orcid":"0000-0003-4345-4267","first_name":"Liu","full_name":"Qiu, Liu"},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"}],"date_created":"2025-01-29T11:11:34Z","related_material":{"record":[{"status":"public","relation":"later_version","id":"19073"},{"id":"18871","relation":"dissertation_contains","status":"public"}]},"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"corr_author":"1","day":"25","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","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.","language":[{"iso":"eng"}],"article_processing_charge":"No","OA_place":"repository","year":"2023","external_id":{"arxiv":["2310.16817"]},"citation":{"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>","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>.","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>. .","short":"G.M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, J.M. Fink, ArXiv (n.d.).","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>","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>.","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>."},"status":"public","publication":"arXiv","department":[{"_id":"JoFi"}],"ec_funded":1,"project":[{"grant_number":"758053","call_identifier":"H2020","_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits"},{"grant_number":"101089099","_id":"bdadfa0d-d553-11ed-ba76-fb85edbd456a","name":"Cavity Quantum Electro Optics: Microwave photonics with nonclassical states"},{"grant_number":"899354","call_identifier":"H2020","name":"Quantum Local Area Networks with Superconducting Qubits","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A"},{"name":"Coherent on-chip conversion of superconducting qubit signals from microwaves to optical frequencies","_id":"2671EB66-B435-11E9-9278-68D0E5697425"},{"grant_number":"F07105","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits"}],"type":"preprint","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2310.16817"}],"oa_version":"Preprint","arxiv":1,"publication_status":"draft","doi":"10.48550/ARXIV.2310.16817","month":"10","date_updated":"2026-07-05T22:30:25Z","date_published":"2023-10-25T00:00:00Z","title":"All-optical single-shot readout of a superconducting qubit","oa":1,"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."}]},{"tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"corr_author":"1","day":"24","date_created":"2023-06-04T22:01:02Z","related_material":{"record":[{"status":"public","relation":"research_data","id":"13124"},{"id":"19533","status":"public","relation":"dissertation_contains"}]},"_id":"13117","author":[{"first_name":"Elena","full_name":"Redchenko, Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","last_name":"Redchenko"},{"first_name":"Alexander V.","full_name":"Poshakinskiy, Alexander V.","last_name":"Poshakinskiy"},{"last_name":"Sett","id":"2E6D040E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-7641-8348","full_name":"Sett, Riya","first_name":"Riya"},{"last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","first_name":"Martin","full_name":"Zemlicka, Martin","orcid":"0009-0005-0878-3032"},{"last_name":"Poddubny","full_name":"Poddubny, Alexander N.","first_name":"Alexander N."},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"volume":14,"quality_controlled":"1","citation":{"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.","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>.","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>","short":"E. Redchenko, A.V. Poshakinskiy, R. Sett, M. Zemlicka, A.N. Poddubny, J.M. Fink, Nature Communications 14 (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.","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>."},"publication":"Nature Communications","status":"public","external_id":{"pmid":["37225689"],"arxiv":["2205.03293"],"isi":["001001099700002"]},"ec_funded":1,"scopus_import":"1","department":[{"_id":"JoFi"}],"article_processing_charge":"No","intvolume":"        14","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"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.","publisher":"Springer Nature","year":"2023","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"article_number":"2998","oa_version":"Published Version","type":"journal_article","isi":1,"file_date_updated":"2023-06-06T07:31:20Z","publication_status":"published","doi":"10.1038/s41467-023-38761-6","has_accepted_license":"1","arxiv":1,"ddc":["530"],"project":[{"_id":"26336814-B435-11E9-9278-68D0E5697425","name":"A Fiber Optic Transceiver for Superconducting Qubits","call_identifier":"H2020","grant_number":"758053"},{"name":"Controllable Collective States of Superconducting Qubit Ensembles","_id":"26B354CA-B435-11E9-9278-68D0E5697425"},{"name":"Protected states of quantum matter","_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2"},{"grant_number":"F07105","_id":"bdb108fd-d553-11ed-ba76-83dc74a9864f","name":"QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits"}],"oa":1,"abstract":[{"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.","lang":"eng"}],"month":"05","file":[{"date_created":"2023-06-06T07:31:20Z","creator":"dernst","date_updated":"2023-06-06T07:31:20Z","file_name":"2023_NaturePhysics_Redchenko.pdf","content_type":"application/pdf","file_id":"13123","success":1,"access_level":"open_access","relation":"main_file","file_size":1654389,"checksum":"a857df40f0882859c48a1ff1e2001ec2"}],"title":"Tunable directional photon scattering from a pair of superconducting qubits","pmid":1,"date_updated":"2026-07-05T22:30:30Z","publication_identifier":{"eissn":["2041-1723"]},"date_published":"2023-05-24T00:00:00Z","article_type":"original"},{"department":[{"_id":"GradSch"},{"_id":"AnHi"},{"_id":"JoFi"}],"scopus_import":"1","ec_funded":1,"external_id":{"isi":["001054563800006"]},"status":"public","publication":"Nature Physics","quality_controlled":"1","citation":{"chicago":"Mukhopadhyay, Soham, Jorden L Senior, Jaime Saez Mollejo, Denise Puglia, Martin Zemlicka, Johannes M Fink, and Andrew P Higginbotham. “Superconductivity from a Melted Insulator in Josephson Junction Arrays.” <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>.","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.","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>","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.","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>.","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>"},"year":"2023","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"}],"publisher":"Springer Nature","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.).","language":[{"iso":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"Yes (in subscription journal)","intvolume":"        19","day":"01","corr_author":"1","tmp":{"image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"volume":19,"page":"1630-1635","author":[{"first_name":"Soham","full_name":"Mukhopadhyay, Soham","orcid":"0000-0001-5263-5559","id":"FDE60288-A89D-11E9-947F-1AF6E5697425","last_name":"Mukhopadhyay"},{"orcid":"0000-0002-0672-9295","full_name":"Senior, Jorden L","first_name":"Jorden L","id":"5479D234-2D30-11EA-89CC-40953DDC885E","last_name":"Senior"},{"full_name":"Saez Mollejo, Jaime","first_name":"Jaime","last_name":"Saez Mollejo","id":"e0390f72-f6e0-11ea-865d-862393336714"},{"id":"4D495994-AE37-11E9-AC72-31CAE5697425","last_name":"Puglia","orcid":"0000-0003-1144-2763","full_name":"Puglia, Denise","first_name":"Denise"},{"first_name":"Martin","full_name":"Zemlicka, Martin","orcid":"0009-0005-0878-3032","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87","last_name":"Zemlicka"},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"},{"last_name":"Higginbotham","id":"4AD6785A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2607-2363","full_name":"Higginbotham, Andrew P","first_name":"Andrew P"}],"_id":"14032","related_material":{"record":[{"id":"17881","status":"public","relation":"dissertation_contains"}]},"date_created":"2023-08-11T07:41:17Z","abstract":[{"lang":"eng","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."}],"oa":1,"article_type":"original","date_published":"2023-11-01T00:00:00Z","date_updated":"2026-07-05T22:30:53Z","publication_identifier":{"eissn":["1745-2481"],"issn":["1745-2473"]},"title":"Superconductivity from a melted insulator in Josephson junction arrays","file":[{"checksum":"1fc86d71bfbf836e221c1e925343adc5","access_level":"open_access","relation":"main_file","file_size":1977706,"success":1,"creator":"dernst","date_created":"2024-01-29T11:25:38Z","content_type":"application/pdf","file_id":"14899","date_updated":"2024-01-29T11:25:38Z","file_name":"2023_NaturePhysics_Mukhopadhyay.pdf"}],"month":"11","file_date_updated":"2024-01-29T11:25:38Z","doi":"10.1038/s41567-023-02161-w","publication_status":"published","has_accepted_license":"1","isi":1,"type":"journal_article","oa_version":"Published Version","project":[{"name":"Cavity electromechanics across a quantum phase transition","_id":"0aa3608a-070f-11eb-9043-e9cd8a2bd931","grant_number":"P33692"},{"call_identifier":"H2020","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425"},{"_id":"eb9b30ac-77a9-11ec-83b8-871f581d53d2","name":"Protected states of quantum matter"}],"keyword":["General Physics and Astronomy"],"ddc":["530"]},{"doi":"10.1103/PhysRevApplied.17.034032","publication_status":"published","arxiv":1,"oa_version":"Preprint","isi":1,"type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2111.01115"}],"abstract":[{"lang":"eng","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."}],"oa":1,"title":"Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T","article_type":"original","date_published":"2022-03-11T00:00:00Z","publication_identifier":{"eissn":["2331-7019"]},"date_updated":"2023-08-03T06:23:58Z","month":"03","day":"11","volume":17,"date_created":"2022-04-03T22:01:43Z","author":[{"full_name":"Krause, J.","first_name":"J.","last_name":"Krause"},{"last_name":"Dickel","first_name":"C.","full_name":"Dickel, C."},{"full_name":"Vaal, E.","first_name":"E.","last_name":"Vaal"},{"last_name":"Vielmetter","first_name":"M.","full_name":"Vielmetter, M."},{"last_name":"Feng","full_name":"Feng, J.","first_name":"J."},{"last_name":"Bounds","first_name":"R.","full_name":"Bounds, R."},{"last_name":"Catelani","first_name":"G.","full_name":"Catelani, G."},{"orcid":"0000-0001-8112-028X","first_name":"Johannes M","full_name":"Fink, Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Yoichi","full_name":"Ando, Yoichi","last_name":"Ando"}],"_id":"10940","department":[{"_id":"JoFi"}],"scopus_import":"1","status":"public","publication":"Physical Review Applied","citation":{"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>","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>.","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.","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).","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>","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>.","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."},"quality_controlled":"1","external_id":{"isi":["000770371400003"],"arxiv":["2111.01115"]},"publisher":"American Physical Society","year":"2022","issue":"3","article_number":"034032","article_processing_charge":"No","intvolume":"        17","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.","language":[{"iso":"eng"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8"},{"issue":"19","article_number":"190401","year":"2022","publisher":"American Institute of Physics","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"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.","intvolume":"       120","article_processing_charge":"No","scopus_import":"1","department":[{"_id":"JoFi"}],"external_id":{"isi":["000796002100002"]},"citation":{"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>.","ista":"Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. 2022. Emerging qubit systems: Guest editorial. Applied Physics Letters. 120(19), 190401.","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>","short":"A.J. Sigillito, J.P. Covey, J.M. Fink, K. Petersson, S. Preble, Applied Physics Letters 120 (2022).","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>.","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.","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>"},"quality_controlled":"1","publication":"Applied Physics Letters","status":"public","volume":120,"_id":"11417","author":[{"last_name":"Sigillito","first_name":"Anthony J.","full_name":"Sigillito, Anthony J."},{"last_name":"Covey","first_name":"Jacob P.","full_name":"Covey, Jacob P."},{"full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Karl","full_name":"Petersson, Karl","last_name":"Petersson"},{"last_name":"Preble","first_name":"Stefan","full_name":"Preble, Stefan"}],"date_created":"2022-05-29T22:01:53Z","day":"12","publication_identifier":{"issn":["0003-6951"]},"date_updated":"2026-06-18T17:14:33Z","article_type":"letter_note","date_published":"2022-05-12T00:00:00Z","title":"Emerging qubit systems: Guest editorial","month":"05","oa":1,"abstract":[{"lang":"eng","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"}],"ddc":["530"],"doi":"10.1063/5.0097339","publication_status":"published","isi":1,"main_file_link":[{"url":"https://doi.org/10.1063/5.0097339","open_access":"1"}],"type":"journal_article","oa_version":"Published Version"},{"article_type":"original","date_published":"2022-06-29T00:00:00Z","publication_identifier":{"issn":["2469-9926"],"eissn":["2469-9934"]},"date_updated":"2025-04-14T07:53:28Z","title":"Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams","month":"06","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"}],"oa":1,"project":[{"name":"Quantum Local Area Networks with Superconducting Qubits","_id":"9B868D20-BA93-11EA-9121-9846C619BF3A","call_identifier":"H2020","grant_number":"899354"}],"arxiv":1,"doi":"10.1103/PhysRevA.105.062454","publication_status":"published","type":"journal_article","isi":1,"main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2204.02993"}],"oa_version":"Preprint","issue":"6","article_number":"062454","publisher":"American Physical Society","year":"2022","language":[{"iso":"eng"}],"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].","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_processing_charge":"No","intvolume":"       105","department":[{"_id":"JoFi"}],"scopus_import":"1","ec_funded":1,"external_id":{"isi":["000824330200003"],"arxiv":["2204.02993"]},"status":"public","publication":"Physical Review A","quality_controlled":"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>.","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.","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>","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>.","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.","short":"J. Agustí, Y. Minoguchi, J.M. Fink, P. Rabl, Physical Review A 105 (2022).","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>"},"volume":105,"author":[{"last_name":"Agustí","full_name":"Agustí, J.","first_name":"J."},{"full_name":"Minoguchi, Y.","first_name":"Y.","last_name":"Minoguchi"},{"full_name":"Fink, Johannes M","first_name":"Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"},{"last_name":"Rabl","full_name":"Rabl, P.","first_name":"P."}],"_id":"11591","date_created":"2022-07-17T22:01:55Z","day":"29"},{"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."}],"scopus_import":"1","department":[{"_id":"JoFi"}],"quality_controlled":"1","citation":{"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>","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.","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.","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>","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.","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>."},"publication":"Conference on Lasers and Electro-Optics","status":"public","title":"Realizing a quantum-enabled interconnect between microwave and telecom light","year":"2022","publisher":"Optica Publishing Group","publication_identifier":{"isbn":["9781557528209"]},"date_updated":"2024-10-09T21:03:27Z","article_number":"FW4D.4","date_published":"2022-05-01T00:00:00Z","article_processing_charge":"No","month":"05","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"doi":"10.1364/CLEO_QELS.2022.FW4D.4","publication_status":"published","corr_author":"1","day":"01","oa_version":"None","type":"conference","conference":{"location":"San Jose, CA, United States","end_date":"2022-05-20","name":"CLEO: QELS Fundamental Science","start_date":"2022-05-15"},"date_created":"2022-09-11T22:01:58Z","_id":"12088","author":[{"first_name":"Rishabh","full_name":"Sahu, Rishabh","orcid":"0000-0001-6264-2162","last_name":"Sahu","id":"47D26E34-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0001-9868-2166","first_name":"William J","full_name":"Hease, William J","last_name":"Hease","id":"29705398-F248-11E8-B48F-1D18A9856A87"},{"id":"3B82B0F8-F248-11E8-B48F-1D18A9856A87","last_name":"Rueda Sanchez","orcid":"0000-0001-6249-5860","first_name":"Alfredo R","full_name":"Rueda Sanchez, Alfredo R"},{"last_name":"Arnold","id":"3770C838-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-1397-7876","first_name":"Georg M","full_name":"Arnold, Georg M"},{"orcid":"0000-0003-4345-4267","first_name":"Liu","full_name":"Qiu, Liu","id":"45e99c0d-1eb1-11eb-9b96-ed8ab2983cac","last_name":"Qiu"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink","first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X"}]},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"06","article_processing_charge":"No","date_updated":"2026-06-03T07:16:02Z","date_published":"2022-06-28T00:00:00Z","title":"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses","publisher":"Zenodo","year":"2022","citation":{"ieee":"M. Zemlicka <i>et al.</i>, “Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses.” Zenodo, 2022.","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>.","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>","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>.","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>.","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>"},"status":"public","department":[{"_id":"JoFi"}],"oa":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."}],"_id":"14520","author":[{"full_name":"Zemlicka, Martin","first_name":"Martin","orcid":"0009-0005-0878-3032","last_name":"Zemlicka","id":"2DCF8DE6-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Redchenko, Elena","first_name":"Elena","last_name":"Redchenko","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Peruzzo","id":"3F920B30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-3415-4628","full_name":"Peruzzo, Matilda","first_name":"Matilda"},{"full_name":"Hassani, Farid","first_name":"Farid","orcid":"0000-0001-6937-5773","last_name":"Hassani","id":"2AED110C-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Trioni, Andrea","first_name":"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"},{"first_name":"Johannes M","full_name":"Fink, Johannes M","orcid":"0000-0001-8112-028X","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","last_name":"Fink"}],"date_created":"2023-11-13T08:09:10Z","related_material":{"record":[{"relation":"used_in_publication","status":"public","id":"14517"}]},"ddc":["530"],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/ZENODO.8408897"}],"type":"research_data_reference","tmp":{"name":"Creative Commons Public Domain Dedication (CC0 1.0)","legal_code_url":"https://creativecommons.org/publicdomain/zero/1.0/legalcode","short":"CC0 (1.0)","image":"/images/cc_0.png"},"oa_version":"Published Version","corr_author":"1","day":"28","doi":"10.5281/ZENODO.8408897","has_accepted_license":"1"}]