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Quantum Thermodynamics
Power enhancement of heat engines via correlated thermalization in multilevel systems
arXiv
Authors: David Gelbwaser-Klimovsky, Wolfgang Niedenzu, Paul Brumer, Gershon Kurizki
Year
2014
Paper ID
46592
Status
Preprint
Abstract Read
~2 min
Abstract Words
99
Citations
N/A
Abstract
We analyze a heat machine based on a periodically-driven quantum system permanently coupled to hot and cold baths. It is shown that the maximal power output of a degenerate V-type three-level heat engine is that generated by two independent two-level systems. For N levels, this maximal enhancement is (N-1)-fold. Hence, level degeneracy is a thermodynamic resource that may effectively boost the power output. The efficiency, however, is not affected. We find that coherence is not an essential asset in multilevel-based heat machines. The existence of multiple thermalization pathways sharing a common ground state suffices for power enhancement.
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- This paper contributes to the Quantum Thermodynamics research area in the Quantum Articles archive.
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- We analyze a heat machine based on a periodically-driven quantum system permanently coupled to hot and cold baths.
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