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arXiv · 1911.09591

Fast Route to Thermalization

Roie Dann·Ander Tobalina·Ronnie Kosloff
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Abstract

We present a control scheme for quantum systems coupled to a thermal bath. We demonstrate state-to-state control between two Gibbs states. This scheme can be used to accelerate thermalization and cool the open system. Starting from a microscopic description, we derive the reduced system dynamics, leading to a non-adiabatic master equation. The equation contains non-trivial effects due to the non-adiabatic driving and bath interaction. These special features enable controlling the open system and accelerating the entropy changes. For a two-level system model, we obtain a general solution and introduce a reverse-engineering scheme for control. The control problem is analyzed in the context of the theory of quantum control and the accompanying thermodynamic cost.

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Roie Dann, Ander Tobalina, Ronnie Kosloff. 2019-11-21. Fast Route to Thermalization. https://doi.org/10.1103/physreva.101.052102

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