非均匀磁场中Heisenberg XXZ白旋链的热量子失协 |
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引用本文: | 谢美秋,郭斌.非均匀磁场中Heisenberg XXZ白旋链的热量子失协[J].武汉水运工程学院学报,2012(6):1310-1313. |
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作者姓名: | 谢美秋 郭斌 |
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作者单位: | 武汉理工大学理学院,武汉430070 |
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基金项目: | 中央高校基本科研业务费专项资金项目资助(批准号:2012-Ia-053) |
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摘 要: | 研究了非均匀磁场中两量子比特的一维海森堡XXZ自旋链的热量子失协,探讨了有限温度下的量子纠缠和量子失协行为,并且对参数(温度T,均匀磁场B,非均匀磁场b和自旋耦合系数Jz)依赖所产生的影响进行了计算和讨论,并比较了两者之间的差异,得到了一些有意义的结果.
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关 键 词: | 量子失协 量子纠缠 海森堡XXZ自旋链 非均匀磁场 |
Thermal Quantum Discord of Heisenberg XXZ Spin Chain in an Inhomogeneous Magnetic Field |
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Authors: | XIE Meiqiu GUO Bin |
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Institution: | (School of Science, Wuhan University of Technolgy , Wuhan 430070, China) |
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Abstract: | We investigate the quantum discord of a two-qubits one dimensional Heisenberg XYZ spin chain in the thermal equilibrium depend on the temperature T and in the presence of inhomogeneous magnetic field. The influences of temperature T, the external magnetic field (both B and b) and ani- sotropic parameter Jz on quantum discord dynamic are addressed in detail. Parameter dependence of the effects is calculated and discussed. |
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Keywords: | quantum discord entanglement Heisenberg XXZ model inhomogeneous magnetic field |
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