Quantum Work Statistics with Initial Coherence
García Díaz, María (Universitat Autònoma de Barcelona. Departament de Física)
Guarnieri, Giacomo (Trinity College Dublin)
Paternostro, Mauro (Queen's University)

Date:	2020
Abstract:	The two-point measurement scheme for computing the thermodynamic work performed on a system requires it to be initially in equilibrium. The Margenau-Hill scheme, among others, extends the previous approach to allow for a non-equilibrium initial state. We establish a quantitative comparison between both schemes in terms of the amount of coherence present in the initial state of the system, as quantified by the l1-coherence measure. We show that the difference between the two first moments of work, the variances of work, and the average entropy production obtained in both schemes can be cast in terms of such initial coherence. Moreover, we prove that the average entropy production can take negative values in the Margenau-Hill framework.
Grants:	European Commission 758403 European Commission 766900 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1127 Ministerio de Economía y Competitividad FIS2016-80681-P
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Quantum coherence ; Quantum thermodynamics ; Work distribution
Published in:	Entropy, Vol. 22, Núm. 11 (November 2020) , art. 1223, ISSN 1099-4300

DOI: 10.3390/e22111223
PMID: 33286991

16 p, 1.8 MB

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