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Entropy 2018, 20(12), 973; https://doi.org/10.3390/e20120973

Revealing the Work Cost of Generalized Thermal Baths

Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
Received: 11 November 2018 / Revised: 1 December 2018 / Accepted: 12 December 2018 / Published: 15 December 2018
(This article belongs to the Special Issue Quantum Thermodynamics II)
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Abstract

We derive the work cost of using generalized thermal baths from the physical equivalence of quantum mechanics under unitary transformations. We demonstrate our method by considering a qubit extracting work from a single bath to amplify a cavity field. There, we find that only half of the work investment is converted into useful output, the rest being wasted as heat. These findings establish the method as a promising tool for studying quantum resources within the framework of classical thermodynamics. View Full-Text
Keywords: quantum thermodynamics; work cost; energy management quantum thermodynamics; work cost; energy management
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Roulet, A. Revealing the Work Cost of Generalized Thermal Baths. Entropy 2018, 20, 973.

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