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

Based on an isotropic two spin-1/2 qubits Heisenberg model with the Dzyaloshinskii-Moriya interaction in an ex- ternal 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 coef...

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Bibliographic Details
Published in:Chinese physics B 2013-05, Vol.22 (5), p.256-262
Main Author: 汪浩 吴国兴
Format: Article
Language:English
Subjects:
Coefficients
Construction
Entanglement
Exchanging
Heat exchangers
Magnetic fields
Qubits (quantum computing)
Refrigerators
Thermodynamics
冰箱
外部磁场
性能系数
海森堡模型
热纠缠
相互作用
量子比特
量子纠缠
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Summary:Based on an isotropic two spin-1/2 qubits Heisenberg model with the Dzyaloshinskii-Moriya interaction in an ex- ternal 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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/5/050512