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Testing a quantum heat pump with a two-level spin

Correa, Luis A.; Mehboudi, Mohammad

Authors

Luis A. Correa

Mohammad Mehboudi



Abstract

Once in its non-equilibrium steady state, a nanoscale system coupled to several heat baths may be thought of as a “quantum heat pump”. Depending on the direction of its stationary heat flows, it may function as, e.g., a refrigerator or a heat transformer. These continuous heat devices can be arbitrarily complex multipartite systems, and yet, their working principle is always the same: they are made up of several elementary three-level stages operating in parallel. As a result, it is possible to devise external “black-box” testing strategies to learn about their functionality and performance regardless of any internal details. In particular, one such heat pump can be tested by coupling a two-level spin to one of its “contact transitions”. The steady state of this external probe contains information about the presence of heat leaks and internal dissipation in the device and, also, about the direction of its steady-state heat currents. Provided that the irreversibility of the heat pump is low, one can further estimate its coefficient of performance. These techniques may find applications in the emerging field of quantum thermal engineering, as they facilitate the diagnosis and design optimization of complex thermodynamic cycles.

Citation

Correa, L. A., & Mehboudi, M. (2016). Testing a quantum heat pump with a two-level spin. Entropy, 18(4), 141. https://doi.org/10.3390/e18040141

Journal Article Type Article
Acceptance Date Apr 8, 2016
Online Publication Date Apr 15, 2016
Publication Date Apr 15, 2016
Deposit Date Oct 4, 2017
Publicly Available Date Oct 4, 2017
Journal Entropy
Electronic ISSN 1099-4300
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 18
Issue 4
Pages 141
DOI https://doi.org/10.3390/e18040141
Keywords thermodynamics; open quantum systems; thermal engineering
Public URL http://eprints.nottingham.ac.uk/id/eprint/46870
Publisher URL http://www.mdpi.com/1099-4300/18/4/141
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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