A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field

doi:10.1088/1674-1056/22/5/050512

中国物理B ›› 2013, Vol. 22 ›› Issue (5): 50512-050512.doi: 10.1088/1674-1056/22/5/050512

A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field

汪浩, 吴国兴

Tianhua College, Shanghai Normal University, Shanghai 201815, China

收稿日期:2012-08-24 修回日期:2012-11-13 出版日期:2013-04-01 发布日期:2013-04-01
基金资助:
Project supported by the Program for Excellent Young Teachers Foundation of Shanghai, China (Grant No. thc-20100036).

A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field

Wang Hao (汪浩), Wu Guo-Xing (吴国兴)

Tianhua College, Shanghai Normal University, Shanghai 201815, China

Received:2012-08-24 Revised:2012-11-13 Online:2013-04-01 Published:2013-04-01
Contact: Wang Hao E-mail:shnuwh@163.com
Supported by:
Project supported by the Program for Excellent Young Teachers Foundation of Shanghai, China (Grant No. thc-20100036).

摘要/Abstract

摘要： Based on an isotropic two spin-1/2 qubits Heisenberg model with the Dzyaloshinskii-Moriya interaction in an external magnetic field, we have constructed an entangled quantum refrigerator. Expressions for the basic thermodynamic quantities, i.e., the heat exchanged, the net work input, and the coefficient of performance, are derived. Some intriguing features and their qualitative explanations in zero and non zero magnetic fields are given. The influence of the thermal entanglement on the refrigerator is investigated. The results obtained here have general significance and will be helpful to understand the performance of an entangled quantum refrigerator.

关键词: Heisenberg model, thermal entanglement, concurrence, entangled refrigerator

Abstract: Based on an isotropic two spin-1/2 qubits Heisenberg model with the Dzyaloshinskii-Moriya interaction in an external magnetic field, we have constructed an entangled quantum refrigerator. Expressions for the basic thermodynamic quantities, i.e., the heat exchanged, the net work input, and the coefficient of performance, are derived. Some intriguing features and their qualitative explanations in zero and non zero magnetic fields are given. The influence of the thermal entanglement on the refrigerator is investigated. The results obtained here have general significance and will be helpful to understand the performance of an entangled quantum refrigerator.

Key words: Heisenberg model, thermal entanglement, concurrence, entangled refrigerator

中图分类号: (Nonequilibrium and irreversible thermodynamics)

05.70.Ln

03.65.Ud (Entanglement and quantum nonlocality) 07.20.Pe (Heat engines; heat pumps; heat pipes)

汪浩, 吴国兴. A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field[J]. 中国物理B, 2013, 22(5): 50512-050512.

Wang Hao (汪浩), Wu Guo-Xing (吴国兴). A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field[J]. Chin. Phys. B, 2013, 22(5): 50512-050512.

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A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field

A thermal entangled quantum refrigerator based on a two-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction in an external magnetic field

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