{"date_updated":"2023-08-03T06:23:58Z","article_processing_charge":"No","month":"03","day":"11","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."}],"department":[{"_id":"JoFi"}],"issue":"3","date_published":"2022-03-11T00:00:00Z","publication_status":"published","scopus_import":"1","publisher":"American Physical Society","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","date_created":"2022-04-03T22:01:43Z","oa":1,"oa_version":"Preprint","status":"public","quality_controlled":"1","title":"Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T","publication_identifier":{"eissn":["2331-7019"]},"external_id":{"arxiv":["2111.01115"],"isi":["000770371400003"]},"doi":"10.1103/PhysRevApplied.17.034032","author":[{"first_name":"J.","last_name":"Krause","full_name":"Krause, J."},{"last_name":"Dickel","first_name":"C.","full_name":"Dickel, C."},{"full_name":"Vaal, E.","last_name":"Vaal","first_name":"E."},{"last_name":"Vielmetter","first_name":"M.","full_name":"Vielmetter, M."},{"last_name":"Feng","first_name":"J.","full_name":"Feng, J."},{"full_name":"Bounds, R.","last_name":"Bounds","first_name":"R."},{"last_name":"Catelani","first_name":"G.","full_name":"Catelani, G."},{"orcid":"0000-0001-8112-028X","last_name":"Fink","first_name":"Johannes M","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","full_name":"Fink, Johannes M"},{"first_name":"Yoichi","last_name":"Ando","full_name":"Ando, Yoichi"}],"publication":"Physical Review Applied","language":[{"iso":"eng"}],"article_number":"034032","_id":"10940","citation":{"mla":"Krause, J., et al. “Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlOx/Al Josephson Junctions Approaching 1 T.” <i>Physical Review Applied</i>, vol. 17, no. 3, 034032, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevApplied.17.034032\">10.1103/PhysRevApplied.17.034032</a>.","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.","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>","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.","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>.","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)."},"article_type":"original","year":"2022","volume":17,"intvolume":"        17","isi":1,"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."}