Publication: On the role of initial coherence in the spin phase-space entropy production rate
Program
KU-Authors
KU Authors
Co-Authors
Zicari, Giorgio
Çakmak, Barış
Paternostro, Mauro
Advisor
Publication Date
2023
Language
English
Type
Journal Article
Journal Title
Journal ISSN
Volume Title
Abstract
Recent studies have pointed out the intrinsic dependence of figures of merit of thermodynamic relevance—such as work, heat and entropy production—on the amount of quantum coherences that is made available to a system. However, whether coherences hinder or enhance the value taken by such quantifiers of thermodynamic performance is yet to be ascertained. We show that, when considering entropy production generated in a process taking a finite-size bipartite quantum system out of equilibrium through local non-unitary channels, no general monotonicity relationship exists between the entropy production and degree of quantum coherence in the state of the system. A direct correspondence between such quantities can be retrieved when considering specific forms of open-system dynamics applied to suitably chosen initial states. Our results call for a systematic study of the role of genuine quantum features in the non-equilibrium thermodynamics of quantum processes.
Description
Source:
New Journal of Physics
Publisher:
Institute of Physics
Keywords:
Subject
Fluctuation theorem, Maxwell's demon, Stochastic system