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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/11831

Title: Squeezing as the source of inefficiency in the quantum Otto cycle
Authors: Zagoskin, Alexandre M.
Savel'ev, Sergey
Nori, Franco
Kusmartsev, F.V.
Issue Date: 2012
Publisher: © American Physical Society
Citation: ZAGOSKIN, A.M., ... et al., 2012. Squeezing as the source of inefficiency in the quantum Otto cycle. Physical Review B, 86 (1), 7 pp.
Abstract: The availability of controllable macroscopic devices, which maintain quantum coherence over relatively long time intervals, for the first time allows an experimental realization of many effects previously considered only as gedanken experiments, such as the operation of quantum heat engines. The theoretical efficiency η of quantum heat engines is restricted by the same Carnot boundary ηC as for the classical ones: any deviations from quasistatic evolution suppressing η below ηC. Here we investigate an implementation of an analog of the Otto cycle in a tunable quantum coherent circuit and show that the specific source of inefficiency is the quantum squeezing of the thermal state due to the finite speed of compression/expansion of the system.
Description: This article was published in the journal, Physical Review B [© American Physical Society] and published at: http://dx.doi.org/10.1103/PhysRevB.86.014501
Version: Published
DOI: 10.1103/PhysRevB.86.014501
URI: https://dspace.lboro.ac.uk/2134/11831
Publisher Link: http://dx.doi.org/10.1103/PhysRevB.86.014501
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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