Bolometric detection of Josephson inductance in a highly resistive environment

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSubero, Diegoen_US
dc.contributor.authorMaillet, Olivieren_US
dc.contributor.authorGolubev, Dmitry S.en_US
dc.contributor.authorThomas, Georgeen_US
dc.contributor.authorPeltonen, Joonas T.en_US
dc.contributor.authorKarimi, Bayanen_US
dc.contributor.authorMarín-Suárez, Marcoen_US
dc.contributor.authorYeyati, Alfredo Levyen_US
dc.contributor.authorSánchez, Rafaelen_US
dc.contributor.authorPark, Sunghunen_US
dc.contributor.authorPekola, Jukka P.en_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorQuantum Phenomena and Devicesen
dc.contributor.groupauthorCentre of Excellence in Quantum Technology, QTFen
dc.contributor.organizationUniversidad Autónoma de Madriden_US
dc.contributor.organizationUniversité Paris-Saclayen_US
dc.date.accessioned2024-01-04T08:44:48Z
dc.date.available2024-01-04T08:44:48Z
dc.date.issued2023-12en_US
dc.descriptionFunding Information: We thank P. Joyez, C. Altimiras, T. Yamamoto, J. Ankerhold, and J. Stockburger for illuminating discussions. We thank funding from Academy of Finland grant 336810, the Spanish State Research Agency through Grant RYC-2016-20778, and the EU for FET-Open contract AndQC. D.S. and J.P.P. acknowledge the support from the innovation program under the European Research Council (ERC) program (grant agreement 742559). This research was achieved using Otaniemi Research Infrastructure for Micro and Nanotechnologies (OtaNano). | openaire: EC/H2020/742559/EU//SQH
dc.description.abstractThe Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment. In 1983, Schmid predicted that a Josephson junction shunted by a resistance exceeding the resistance quantum R Q = h/4e 2 ≈ 6.45 kΩ for Cooper pairs would become insulating since the phase fluctuations would destroy the coherent Josephson coupling. However, recent microwave measurements have questioned this interpretation. Here, we insert a small Josephson junction in a Johnson-Nyquist-type setup where it is driven by weak current noise arising from thermal fluctuations. Our heat probe minimally perturbs the junction’s equilibrium, shedding light on features not visible in charge transport. We find that the Josephson critical current completely vanishes in DC charge transport measurement, and the junction demonstrates Coulomb blockade in agreement with the theory. Surprisingly, thermal transport measurements show that the Josephson junction acts as an inductor at high frequencies, unambiguously demonstrating that a supercurrent survives despite the Coulomb blockade observed in DC measurements.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.extent1-8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationSubero, D, Maillet, O, Golubev, D S, Thomas, G, Peltonen, J T, Karimi, B, Marín-Suárez, M, Yeyati, A L, Sánchez, R, Park, S & Pekola, J P 2023, ' Bolometric detection of Josephson inductance in a highly resistive environment ', Nature Communications, vol. 14, no. 1, 7924, pp. 1-8 . https://doi.org/10.1038/s41467-023-43668-3en
dc.identifier.doi10.1038/s41467-023-43668-3en_US
dc.identifier.issn2041-1723
dc.identifier.otherPURE UUID: 1c77e9fd-a903-40ff-ba1f-d149862f0d08en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/1c77e9fd-a903-40ff-ba1f-d149862f0d08en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85178244441&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/131422633/Bolometric_detection_of_Josephson_inductance_in_a_highly_resistive_environment.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/125364
dc.identifier.urnURN:NBN:fi:aalto-202401041053
dc.language.isoenen
dc.publisherNature Publishing Group
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/742559/EU//SQHen_US
dc.relation.ispartofseriesNature Communicationsen
dc.relation.ispartofseriesVolume 14, issue 1en
dc.rightsopenAccessen
dc.titleBolometric detection of Josephson inductance in a highly resistive environmenten
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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