Nonequilibrium thermodynamics of quantum coherence beyond linear response

Abstract

Quantum thermodynamics allows for the interconversion of quantum coherence and mechanical work. Quantum coherence is thus a potential physical resource for quantum machines. However, formulating a general nonequilibrium thermodynamics of quantum coherence has turned out to be challenging. In particular, precise conditions under which coherence is beneficial to or, on the contrary, detrimental for work extraction from a system have remained elusive. We here develop a generic dynamic-Bayesian-network approach to the far-from-equilibrium thermodynamics of coherence. We concretely derive generalized fluctuation relations and a maximum-work theorem that fully account for quantum coherence at all times, for both closed and open dynamics. We obtain criteria for successful coherence-to-work conversion, and identify a nonequilibrium regime where maximum work extraction is increased by quantum coherence for fast processes beyond linear response.

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Cited by in corpus (7)

• Role of Quantum Coherence in Kinetic Uncertainty Relations
• Non-Abelian transport distinguishes three usually equivalent notions of entropy production
• Synchronization-induced violation of thermodynamic uncertainty relations
• Energy additivity as a requirement for universal quantum thermodynamical frameworks
• Experimental demonstration of generalized quantum fluctuation theorems in the presence of coherence
• Work fluctuation theorems with initial quantum coherence
• Quantum Coherence and Anomalous Work Extraction in Qubit Gate Dynamics