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Guryanova Y, Popescu S, Short AJ, et al. Thermodynamics of quantum systems with multiple conserved quantities. Nat Commun. 2016;7:12049doi: 10.1038/ncomms12049.
Guryanova, Y., Popescu, S., Short, A. J., Silva, R., & Skrzypczyk, P. (2016). Thermodynamics of quantum systems with multiple conserved quantities. Nature communications, 712049. https://doi.org/10.1038/ncomms12049
Guryanova, Yelena, et al. "Thermodynamics of quantum systems with multiple conserved quantities." Nature communications vol. 7 (2016): 12049. doi: https://doi.org/10.1038/ncomms12049
Guryanova Y, Popescu S, Short AJ, Silva R, Skrzypczyk P. Thermodynamics of quantum systems with multiple conserved quantities. Nat Commun. 2016 Jul 07;7:12049. doi: 10.1038/ncomms12049. PMID: 27384384; PMCID: PMC4941046.
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Nat Commun. 2016 Jul 07;7:12049. doi: 10.1038/ncomms12049.

Thermodynamics of quantum systems with multiple conserved quantities.

Nature communications

Yelena Guryanova, Sandu Popescu, Anthony J Short, Ralph Silva, Paul Skrzypczyk

Affiliations

  1. H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK.
  2. Département de Physique Théorique, Université de Genève, 1211 Genève, Switzerland.

PMID: 27384384 PMCID: PMC4941046 DOI: 10.1038/ncomms12049

Abstract

Recently, there has been much progress in understanding the thermodynamics of quantum systems, even for small individual systems. Most of this work has focused on the standard case where energy is the only conserved quantity. Here we consider a generalization of this work to deal with multiple conserved quantities. Each conserved quantity, which, importantly, need not commute with the rest, can be extracted and stored in its own battery. Unlike the standard case, in which the amount of extractable energy is constrained, here there is no limit on how much of any individual conserved quantity can be extracted. However, other conserved quantities must be supplied, and the second law constrains the combination of extractable quantities and the trade-offs between them. We present explicit protocols that allow us to perform arbitrarily good trade-offs and extract arbitrarily good combinations of conserved quantities from individual quantum systems.

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