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Otto refrigerator based on a superconducting qubit

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Karimi, B.
dc.contributor.author Pekola, J. P.
dc.date.accessioned 2016-12-16T14:09:36Z
dc.date.issued 2016
dc.identifier.citation Karimi , B & Pekola , J P 2016 , ' Otto refrigerator based on a superconducting qubit : Classical and quantum performance ' , Physical Review B , vol. 94 , no. 18 , 184503 , pp. 1-7 . https://doi.org/10.1103/PhysRevB.94.184503 en
dc.identifier.issn 1098-0121
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 547af9b0-b877-49b1-9f3e-c0e0db045458
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/otto-refrigerator-based-on-a-superconducting-qubit(547af9b0-b877-49b1-9f3e-c0e0db045458).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=84994635660&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/9411092/PhysRevB.94.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/23786
dc.description.abstract We analyze a quantum Otto refrigerator based on a superconducting qubit coupled to two LC resonators, each including a resistor acting as a reservoir. We find various operation regimes: nearly adiabatic (low driving frequency), ideal Otto cycle (intermediate frequency), and nonadiabatic coherent regime (high frequency). In the nearly adiabatic regime, the cooling power is quadratic in frequency, and we find a substantially enhanced coefficient of performance ϵ, as compared to that of an ideal Otto cycle. Quantum coherent effects lead invariably to a decrease in both cooling power and ϵ as compared to purely classical dynamics. In the nonadiabatic regime we observe strong coherent oscillations of the cooling power as a function of frequency. We investigate various driving wave forms: Compared to the standard sinusoidal drive, a truncated trapezoidal drive with optimized rise and dwell times yields higher cooling power and efficiency. en
dc.format.extent 1-7
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW B en
dc.relation.ispartofseries Volume 94, issue 18 en
dc.rights openAccess en
dc.subject.other Electronic, Optical and Magnetic Materials en
dc.subject.other Condensed Matter Physics en
dc.subject.other 114 Physical sciences en
dc.title Otto refrigerator based on a superconducting qubit en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword Electronic, Optical and Magnetic Materials
dc.subject.keyword Condensed Matter Physics
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201612165963
dc.identifier.doi 10.1103/PhysRevB.94.184503
dc.type.version publishedVersion

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