Open AccessQuantum self-contained refrigerator in terms of the cavity quantum electrodynamics in the weak internal-coupling regime
Author(s) -
Chang-shui Yu,
Bao-qing Guo,
Tong Liu
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.006863
Subject(s) - refrigerator car , physics , coupling (piping) , quantum , cavity quantum electrodynamics , dilution refrigerator , quantum mechanics , thermal , quantum electrodynamics , thermodynamics , open quantum system , materials science , metallurgy
We present two schemes to implement the self-contained refrigerator in the framework of the cavity quantum electrodynamics. The considered refrigerators are composed of three interacting microcavities (or two microcavities simultaneously interacting with one three-level atom) separately coupling to a thermal bath with a certain temperature. Despite the local master equation employed, the proposed analytic procedure shows the perfect thermodynamical consistency. It is also demonstrated that the heat is stably extracted from the lowest temperature bath with a fixed efficiency only determined by the intrinsic properties of the refrigerators, i.e., the frequency ratio of the two cavities in contact with the two higher temperature baths. These two schemes indicate that the system with the weak internal coupling in the infinite dimensional Hilbert space can be used to realize the quantum self-contained refrigerator on the principle completely the same as the original self-contained refrigerator.