Quest for absolute zero in presence of external noise

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Show simple item record Torrontegui Muñoz, Erik Kosloff, Ronnie 2021-03-15T10:58:01Z 2021-03-15T10:58:01Z 2013-09
dc.identifier.bibliographicCitation Torrontegui, E. y Kosloff, R. (2013). Quest for absolute zero in the presence of external noise. Physical Review E, 88(3).
dc.identifier.issn 1539-3755
dc.description.abstract A reciprocating quantum refrigerator is analyzed with the intention to study the limitations imposed by external noise. In particular we focus on the behavior of the refrigerator when it approaches the absolute zero. The cooling cycle is based on the Otto cycle with a working medium constituted by an ensemble of noninteracting harmonic oscillators. The compression and expansion segments are generated by changing an external parameter in the Hamiltonian. In this case the force constant of the harmonic oscillators momega2 is modified from an initial to a final value. As a result, the kinetic and potential energy of the system do not commute causing frictional losses. By proper choice of scheduling function omega(t) frictionless solutions can be obtained in the noiseless case. We examine the performance of a refrigerator subject to noise. By expanding from the adiabatic limit we find that the external noise, Gaussian phase, and amplitude noises reduce the amount of heat that can be extracted but nevertheless the zero temperature can be approached.
dc.description.sponsorship We are grateful to Y. Rezek and A. Levy for fruitful discussions. We acknowledge funding by Projects No. IT472-10, No. FIS2009-12773-C02-01, No. FIS2012-36673-C03-01, UPV/EHU program UFI 11/55, and the Israel Science Foundation (ISF).
dc.format.extent 6
dc.language.iso eng
dc.publisher American Physical Society
dc.rights ©2013 American Physical Society
dc.title Quest for absolute zero in presence of external noise
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 032103-1
dc.identifier.publicationissue 3
dc.identifier.publicationlastpage 032103-6
dc.identifier.publicationtitle Physical Review E
dc.identifier.publicationvolume 88
dc.identifier.uxxi AR/0000026561
dc.affiliation.dpto UC3M. Departamento de Física
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Materiales Nano-Estructurados y Multifuncionales
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