Vir. J. Quantum Inf. / Volume 10 / Issue 1 / ENTANGLEMENT

Energetics of quantum correlations

Source: EPL 88, 50003 (2010); doi:10.1209/0295-5075/88/50003

Issue Date: January 2010

ABSTRACT

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PUBLICATION DATA

Publisher:

IOP Publishing

R. Dillenschneider
Department of Physics, University of Augsburg - D-86135 Augsburg, Germany, EU.

E. Lutz

Weconsider a photo-Carnot engine that consists of a single-mode radiationfield in an optical cavity. One the heat reservoirs ismade of a beam of thermally entangled pairs of two-levelatoms that interact resonantly with the cavity. We express thethermodynamic efficiency of the engine in terms of the quantumdiscord of the atomic pair and find that it canexceed its classical value. Our results show that useful workcan be extracted from quantum correlations, indicating that the latterare a valuable resource in quantum thermodynamics. ©2009

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http://dx.doi.org/10.1209/0295-5075/88/50003

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Energetics of quantum correlations

Source: EPL 88, 50003 (2010); doi:10.1209/0295-5075/88/50003