Detecting parity effect in a superconducting device in the presence of parity switches

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMannila, E. T.en_US
dc.contributor.authorMaisi, V. F.en_US
dc.contributor.authorNguyen, H. Q.en_US
dc.contributor.authorMarcus, C. M.en_US
dc.contributor.authorPekola, J. P.en_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorCentre of Excellence in Quantum Technology, QTFen
dc.contributor.groupauthorQuantum Phenomena and Devicesen
dc.contributor.organizationUniversity of Copenhagenen_US
dc.date.accessioned2019-08-15T08:25:14Z
dc.date.available2019-08-15T08:25:14Z
dc.date.issued2019-07-08en_US
dc.description.abstractWe present a superconducting device showing a clear parity effect in the number of electrons, even when there is, on average, a single nonequilibrium quasiparticle present and the parity of the island switches due to quasiparticles tunneling in and out of the device at rates on the order of 100 Hz. We detect the switching by monitoring in real time the charge state of a superconducting island connected to normal leads by tunnel junctions. The quasiparticles are created by Cooper pairs breaking on the island at a rate of a few kilohertz. We demonstrate that the pair breaking is caused by the backaction of the single-electron transistor used as a charge detector. With sufficiently low probing currents, our superconducting island is free of quasiparticles 97% of the time.en
dc.description.versionPeer revieweden
dc.format.extent5
dc.format.extent1-5
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationMannila, E T, Maisi, V F, Nguyen, H Q, Marcus, C M & Pekola, J P 2019, ' Detecting parity effect in a superconducting device in the presence of parity switches ', Physical Review B, vol. 100, no. 2, 020502, pp. 1-5 . https://doi.org/10.1103/PhysRevB.100.020502en
dc.identifier.doi10.1103/PhysRevB.100.020502en_US
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.otherPURE UUID: 92d10386-d4fa-46ef-9f96-c4eec25e34f7en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/92d10386-d4fa-46ef-9f96-c4eec25e34f7en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/36017468/PhysRevB.100.020502.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/39711
dc.identifier.urnURN:NBN:fi:aalto-201908154756
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseriesVolume 100, issue 2en
dc.rightsopenAccessen
dc.subject.keywordLIFETIMEen_US
dc.titleDetecting parity effect in a superconducting device in the presence of parity switchesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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