Active Quasiparticle Suppression in a Non-Equilibrium Superconductor

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMarin Suarez, Marco
dc.contributor.authorPeltonen, Joonas
dc.contributor.authorPekola, J.P.
dc.contributor.departmentQuantum Phenomena and Devices
dc.contributor.departmentCentre of Excellence in Quantum Technology, QTF
dc.contributor.departmentDepartment of Applied Physicsen
dc.date.accessioned2020-06-25T08:39:01Z
dc.date.available2020-06-25T08:39:01Z
dc.date.issued2020-07-08
dc.description.abstractQuasiparticle (qp) poisoning is a major issue that impairs the operation of various superconducting devices. Even though these devices are often operated at temperatures well below the critical point where the number density of excitations is expected to be exponentially suppressed, their bare operation and stray microwave radiation excite the non-equilibrium qp’s. Here we use voltage-biased superconducting junctions to demonstrate and quantify qp extraction in the turnstile operation of a superconductor–insulator–normal metal–insulator–superconductor single-electron transistor. In this operation regime, excitations are injected into the superconducting leads at a rate proportional to the driving frequency. We reach a reduction of density by an order of magnitude even for the highest injection rate of 2.4 × 108 qp’s per second when extraction is turned on.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdf
dc.identifier.citationMarin Suarez , M , Peltonen , J & Pekola , J P 2020 , ' Active Quasiparticle Suppression in a Non-Equilibrium Superconductor ' , Nano Letters , vol. 20 , no. 7 , pp. 5065-5071 . https://doi.org/10.1021/acs.nanolett.0c01264en
dc.identifier.doi10.1021/acs.nanolett.0c01264
dc.identifier.issn1530-6984
dc.identifier.issn1530-6992
dc.identifier.otherPURE UUID: 6046e326-3f60-408f-927c-41a4425779fb
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/6046e326-3f60-408f-927c-41a4425779fb
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85087809065&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/43807765/acs.nanolett.0c01264.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/45145
dc.identifier.urnURN:NBN:fi:aalto-202006254102
dc.language.isoenen
dc.publisherAMERICAN CHEMICAL SOCIETY
dc.relation.ispartofseriesNano Lettersen
dc.rightsopenAccessen
dc.titleActive Quasiparticle Suppression in a Non-Equilibrium Superconductoren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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