Detection of Zeptojoule Microwave Pulses Using Electrothermal Feedback in Proximity-Induced Josephson Junctions

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Govenius, J.
dc.contributor.author Lake, R. E.
dc.contributor.author Tan, K. Y.
dc.contributor.author Möttönen, M.
dc.date.accessioned 2017-03-28T12:14:06Z
dc.date.available 2017-03-28T12:14:06Z
dc.date.issued 2016-07-15
dc.identifier.citation Govenius , J , Lake , R E , Tan , K Y & Möttönen , M 2016 , ' Detection of Zeptojoule Microwave Pulses Using Electrothermal Feedback in Proximity-Induced Josephson Junctions ' Physical Review Letters , vol 117 , no. 3 , 030802 , pp. 1-6 . DOI: 10.1103/PhysRevLett.117.030802 en
dc.identifier.issn 0031-9007
dc.identifier.issn 1079-7114
dc.identifier.other PURE UUID: e1df6caa-0389-4c70-ab22-3a339b1df62c
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/detection-of-zeptojoule-microwave-pulses-using-electrothermal-feedback-in-proximityinduced-josephson-junctions(e1df6caa-0389-4c70-ab22-3a339b1df62c).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=84978745049&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/11425944/PhysRevLett.117.030802.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25027
dc.description.abstract We experimentally investigate and utilize electrothermal feedback in a microwave nanobolometer based on a normal-metal (AuxPd1-x) nanowire with proximity-induced superconductivity. The feedback couples the temperature and the electrical degrees of freedom in the nanowire, which both absorbs the incoming microwave radiation, and transduces the temperature change into a radio-frequency electrical signal. We tune the feedback in situ and access both positive and negative feedback regimes with rich nonlinear dynamics. In particular, strong positive feedback leads to the emergence of two metastable electron temperature states in the millikelvin range. We use these states for efficient threshold detection of coherent 8.4 GHz microwave pulses containing approximately 200 photons on average, corresponding to 1.1×10-21 J≈7.0 meV of energy. en
dc.format.extent 1-6
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Physical Review Letters en
dc.relation.ispartofseries Volume 117, issue 3 en
dc.rights openAccess en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other 114 Physical sciences en
dc.title Detection of Zeptojoule Microwave Pulses Using Electrothermal Feedback in Proximity-Induced Josephson Junctions en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201703283266
dc.identifier.doi 10.1103/PhysRevLett.117.030802
dc.type.version publishedVersion


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