Validity of Landauer's principle in the quantum regime

Details Validity of Landauer's principle in the quantum regime Validity of Landauer's principle in the quantum regime

2010-04-09

arxiv.org/abs/1004.1599v1

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

We demonstrate the validity of Landauer's erasure principle in the strong coupling quantum regime by treating the system-reservoir interaction in a consistent way. We show that the initial coupling to the reservoir modifies both energy and entropy of the system and provide explicit expressions for the latter in the case of a damped quantum harmonic oscillator. These contributions are related to the Hamiltonian of mean force and dominate in the strong damping limit. They need therefore to be fully taken into account in any low-temperature thermodynamic analysis of quantum systems.

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