Feedback-controlled heat transport in quantum devices

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Campisi, Michele Pekola, Jukka Fazio, Rosario 2017-08-03T12:08:09Z 2017-08-03T12:08:09Z 2017-05-01
dc.identifier.citation Campisi , M , Pekola , J & Fazio , R 2017 , ' Feedback-controlled heat transport in quantum devices : Theory and solid-state experimental proposal ' New Journal of Physics , vol 19 , no. 5 , 053027 , pp. 1-12 . DOI: 10.1088/1367-2630/aa6acb en
dc.identifier.issn 1367-2630
dc.identifier.other PURE UUID: 1984836e-6395-4d9d-a0d6-0fa4f08dea5f
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.abstract A theory of feedback-controlled heat transport in quantum systems is presented. It is based on modelling heat engines as driven multipartite systems subject to projective quantum measurements and measurement-conditioned unitary evolutions. The theory unifies various results presented previously in the literature. Feedback control breaks time reversal invariance. This in turn results in the fluctuation relation not being obeyed. Its restoration occurs through appropriate accounting of the gain and use of information via measurements and feedback. We further illustrate an experimental proposal for the realisation of a Maxwell demon using superconducting circuits and single-photon on-chip calorimetry. A two-level qubit acts as a trap-door, which, conditioned on its state, is coupled to either a hot resistor or a cold one. The feedback mechanism alters the temperatures felt by the qubit and can result in an effective inversion of temperature gradient, where heat flows from cold to hot thanks to the gain and use of information. en
dc.format.extent 1-12
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries New Journal of Physics en
dc.relation.ispartofseries Volume 19, issue 5 en
dc.rights openAccess en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other 114 Physical sciences en
dc.title Feedback-controlled heat transport in quantum devices en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Scuola Normale Superiore di Pisa
dc.contributor.department Department of Applied Physics
dc.subject.keyword Maxwell demon
dc.subject.keyword quantum thermodynamics
dc.subject.keyword superconducting devices
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201708036329
dc.identifier.doi 10.1088/1367-2630/aa6acb
dc.type.version publishedVersion

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