Thermodynamics of Precision in Markovian Open Quantum Dynamics

Tan Van Vu, Keiji Saito

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The thermodynamic and kinetic uncertainty relations indicate trade-offs between the relative fluctuation of observables and thermodynamic quantities such as dissipation and dynamical activity. Although these relations have been well studied for classical systems, they remain largely unexplored in the quantum regime. In this Letter, we investigate such trade-off relations for Markovian open quantum systems whose underlying dynamics are quantum jumps, such as thermal processes and quantum measurement processes. Specifically, we derive finite-time lower bounds on the relative fluctuation of both dynamical observables and their first passage times for arbitrary initial states. The bounds imply that the precision of observables is constrained not only by thermodynamic quantities but also by quantum coherence. We find that the product of the relative fluctuation and entropy production or dynamical activity is enhanced by quantum coherence in a generic class of dissipative processes of systems with nondegenerate energy levels. Our findings provide insights into the survival of the classical uncertainty relations in quantum cases.

本文言語English
論文番号140602
ジャーナルPhysical review letters
128
14
DOI
出版ステータスPublished - 2022 4月 8

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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