1 Ocak 2023 Dergi makalesi Açık Erişim

Zicari, Giorgio; cakmak, Baris; Mustecaplioglu, Ozguer E.; Paternostro, Mauro

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    <subfield code="a">On the role of initial coherence in the spin phase-space entropy production rate</subfield>
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    <subfield code="a">Zicari, Giorgio</subfield>
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    <subfield code="a">&lt;p&gt;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.&lt;/p&gt;</subfield>
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