PMID: 11909203Mar 23, 2002Paper

Quantum refrigeration cycles using spin-1/2 systems as the working substance

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Jizhou HeBen Hua

Abstract

The cycle model of a quantum refrigerator composed of two isothermal and two isomagnetic field processes is established. The working substance in the cycle consists of many noninteracting spin-1/2 systems. The performance of the cycle is investigated, based on the quantum master equation and semigroup approach. The general expressions of several important performance parameters, such as the coefficient of performance, cooling rate, and power input, are given. Especially, the case at high temperatures is analyzed in detail. The results obtained are further generalized and discussed, so that they may be directly used to describe the performance of the quantum refrigerator using spin-J systems as the working substance. Finally, the optimum characteristics of the quantum Carnot refrigerator are derived simply.

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Citations

Jun 8, 2007·The Journal of Chemical Physics·Feng WuFengrui Sun
Apr 3, 2014·Annual Review of Physical Chemistry·Ronnie Kosloff, Amikam Levy
Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Bihong Lin, Jincan Chen
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