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@article{Lostaglio:2015:10.1038/ncomms7383,
author = {Lostaglio, R and Jennings, D and Rudolph, T},
doi = {10.1038/ncomms7383},
journal = {Nature Communications},
title = {Description of quantum coherence in thermodynamic processes requires constraints beyond free energy},
url = {http://dx.doi.org/10.1038/ncomms7383},
volume = {6},
year = {2015}
}

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TY  - JOUR
AB  - Recent studies have developed fundamental limitations on nanoscale thermodynamics, in terms of a set of independent free energy relations. Here we show that free energy relations cannot properly describe quantum coherence in thermodynamic processes. By casting time-asymmetry as a quantifiable, fundamental resource of a quantum state, we arrive at an additional, independent set of thermodynamic constraints that naturally extend the existing ones. These asymmetry relations reveal that the traditional Szilárd engine argument does not extend automatically to quantum coherences, but instead only relational coherences in a multipartite scenario can contribute to thermodynamic work. We find that coherence transformations are always irreversible. Our results also reveal additional structural parallels between thermodynamics and the theory of entanglement.
AU  - Lostaglio,R
AU  - Jennings,D
AU  - Rudolph,T
DO  - 10.1038/ncomms7383
PY  - 2015///
SN  - 2041-1723
TI  - Description of quantum coherence in thermodynamic processes requires constraints beyond free energy
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/ncomms7383
UR  - http://www.nature.com/ncomms/2015/150310/ncomms7383/full/ncomms7383.html
VL  - 6
ER  -

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