A quantum damper

Fumihiro Matsui, Hiroaki S. Yamada and Kensuke S. Ikeda

Physica A: Statistical Mechanics and its Applications, 2019, vol. 523, issue C, 631-641

Abstract: As an application of the classically decay-able correlation in a quantum chaos system maintained over an extremely long time-scale (Matsui et al., 2016), we propose a minimal model of quantum damper composed of a quantum harmonic oscillator (HO) weakly interacting with a bounded quantum chaos system. Although the whole system obeys unitary evolution dynamics of only three quantum degrees of freedom, the mechanical work applied to the HO is stationary converted linearly into the internal energy in time, characterized by an effective temperature in an irreversible way, if the components of the quantum chaos system are mutually entangled enough. A paradoxical dependence of the duration time of the stationary energy conversion on the driving strength is also discussed.

Keywords: Quantum chaos; Semiclassical methods (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:523:y:2019:i:c:p:631-641

DOI: 10.1016/j.physa.2019.02.052

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