Imperial College London

DrDavidJennings

Faculty of Natural SciencesDepartment of Physics

Research Associate
 
 
 
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Contact

 

+44 (0)20 7594 0971d.jennings Website

 
 
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Location

 

Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sparaciari:2017:10.1038/s41467-017-01505-4,
author = {Sparaciari, C and Jennings, D and Oppenheim, J},
doi = {10.1038/s41467-017-01505-4},
journal = {NATURE COMMUNICATIONS},
title = {Energetic instability of passive states in thermodynamics},
url = {http://dx.doi.org/10.1038/s41467-017-01505-4},
volume = {8},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Passivity is a fundamental concept in thermodynamics that demands a quantum system’s energy cannot be lowered by any reversible, unitary process acting on the system. In the limit of many such systems, passivity leads in turn to the concept of complete passivity, thermal states and the emergence of a thermodynamic temperature. Here we only consider a single system and show that every passive state except the thermal state is unstable under a weaker form of reversibility. Indeed, we show that given a single copy of any athermal quantum state, an optimal amount of energy can be extracted from it when we utilise a machine that operates in a reversible cycle. This means that for individual systems, the only form of passivity that is stable under general reversible processes is complete passivity, and thus provides a physically motivated identification of thermal states when we are not operating in the thermodynamic limit.
AU - Sparaciari,C
AU - Jennings,D
AU - Oppenheim,J
DO - 10.1038/s41467-017-01505-4
PY - 2017///
SN - 2041-1723
TI - Energetic instability of passive states in thermodynamics
T2 - NATURE COMMUNICATIONS
UR - http://dx.doi.org/10.1038/s41467-017-01505-4
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000416933400017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/59174
VL - 8
ER -