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arXiv · 1708.02169

Kinetics and thermodynamics of a driven open quantum system

Juzar Thingna·Felipe Barra·Massimiliano Esposito
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Abstract

Redfield theory provides a closed kinetic description of a quantum system in weak contact with a very dense reservoir. Landau-Zener theory does the same for a time-dependent driven system in contact with a sparse reservoir. Using a simple model, we analyze the validity of these two theories by comparing their predictions with exact numerical results. We show that despite their a priori different range of validity, these two descriptions can give rise to an identical quantum master equation. Both theories can be used for a nonequilibrium thermodynamic description which we show is consistent with exact thermodynamic identities evaluated in the full system-reservoir space. We emphasize the importance of properly accounting for the system-reservoir interaction energy and of operating in regimes where the reservoir can be considered as close to ideal.

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Juzar Thingna, Felipe Barra, Massimiliano Esposito. 2017-10-19. Kinetics and thermodynamics of a driven open quantum system. https://doi.org/10.1103/physreve.96.052132

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