Quantum-circuit Refrigerator

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Tan, Kuan
dc.contributor.author Partanen, Matti
dc.contributor.author Lake, Russell
dc.contributor.author Govenius, Joonas
dc.contributor.author Masuda, Shumpei
dc.contributor.author Möttönen, Mikko
dc.date.accessioned 2017-05-31T06:02:57Z
dc.date.available 2017-05-31T06:02:57Z
dc.date.issued 2017-05-08
dc.identifier.citation Tan , K , Partanen , M , Lake , R , Govenius , J , Masuda , S & Möttönen , M 2017 , ' Quantum-circuit Refrigerator ' NATURE COMMUNICATIONS , vol 8 , 15189 , pp. 1-8 . DOI: doi:10.1038/ncomms15189 en
dc.identifier.issn 2041-1723
dc.identifier.other PURE UUID: 86c59321-8f9f-46b8-9931-f25d0043a421
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/quantumcircuit-refrigerator(86c59321-8f9f-46b8-9931-f25d0043a421).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/13045479/ncomms15189.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/26521
dc.description.abstract Quantum technology promises revolutionizing applications in information processing, communications, sensing and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains challenging in many solid-state implementations, such as superconducting circuits. Here we demonstrate direct cooling of a superconducting resonator mode using voltage-controllable electron tunnelling in a nanoscale refrigerator. This result is revealed by a decreased electron temperature at a resonator-coupled probe resistor, even for an elevated electron temperature at the refrigerator. Our conclusions are verified by control experiments and by a good quantitative agreement between theory and experimental observations at various operation voltages and bath temperatures. In the future, we aim to remove spurious dissipation introduced by our refrigerator and to decrease the operational temperature. Such an ideal quantum-circuit refrigerator has potential applications in the initialization of quantum electric devices. In the superconducting quantum computer, for example, fast and accurate reset of the quantum memory is needed. en
dc.format.extent 1-8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/681311/EU//QUESS
dc.relation.ispartofseries NATURE COMMUNICATIONS en
dc.relation.ispartofseries Volume 8 en
dc.rights openAccess en
dc.subject.other Condensed Matter Physics en
dc.subject.other 114 Physical sciences en
dc.subject.other Condensed matter physics en
dc.title Quantum-circuit Refrigerator en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword Condensed Matter Physics
dc.subject.keyword 114 Physical sciences
dc.subject.keyword Condensed matter physics
dc.identifier.urn URN:NBN:fi:aalto-201705315136
dc.identifier.doi 10.1038/ncomms15189
dc.type.version publishedVersion

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