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Quantum Work Statistics with Initial Coherence

Física Teòrica: Informació i Fenòmens Quàntics, Departament de Física, Universitat Autònoma de Barcelona, ES-08193 Bellaterra (Barcelona), Spain
School of Physics, Trinity College Dublin, College Green, Dublin 2, Ireland;[email protected]
Centre for Theoretical Atomic, Molecular, and Optical Physics, School of Mathematics and Physics, Queen’s University, Belfast BT7 1NN, UK
Author to whom correspondence should be addressed.
Entropy 2020, 22(11), 1223;
Received: 23 September 2020 / Revised: 18 October 2020 / Accepted: 22 October 2020 / Published: 27 October 2020
(This article belongs to the Special Issue Thermodynamics of Quantum Information)
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. View Full-Text
Keywords: quantum coherence; quantum thermodynamics; work distribution quantum coherence; quantum thermodynamics; work distribution
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MDPI and ACS Style

Díaz, M.G.; Guarnieri, G.; Paternostro, M. Quantum Work Statistics with Initial Coherence. Entropy 2020, 22, 1223.

AMA Style

Díaz MG, Guarnieri G, Paternostro M. Quantum Work Statistics with Initial Coherence. Entropy. 2020; 22(11):1223.

Chicago/Turabian Style

Díaz, María García, Giacomo Guarnieri, and Mauro Paternostro. 2020. "Quantum Work Statistics with Initial Coherence" Entropy 22, no. 11: 1223.

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