| 磁场作用下海森堡模型的热纠缠传态 |
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| 引用本文： | 陈涛,刘霞.磁场作用下海森堡模型的热纠缠传态[J].河北师范大学学报(自然科学版),2009,33(2). |
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| 作者姓名： | 陈涛 刘霞 |
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| 作者单位： | 1. 湖北师范学院物理与电子科学学院,湖北黄石,435002
2. 宜春学院理工学院,江西宜春,336000 |
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| 基金项目： | 湖北师范学院校自然科学基金 |
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| 摘 要： | 研究了均匀磁场作用下的两量子比特XXZ海森堡模型的热纠缠,并且以此热纠缠混合态作为量子信道传输两量子比特的纠缠纯态.计算出输出态的纠缠度和传态的平均保真度.讨论了温度、磁场、各向异性参数对纠缠度和平均保真度的影响.
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| 关 键 词： | 热纠缠态 纠缠度 保真度 量子传态 |
Thermal Entanglement and Teleportation in the Heisenberg Model with Magnetic Field |
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| CHEN Tao,LIU Xia.Thermal Entanglement and Teleportation in the Heisenberg Model with Magnetic Field[J].Journal of Hebei Normal University,2009,33(2). |
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| Authors: | CHEN Tao LIU Xia |
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| Institution: | 1.College of Physics and Electronics Science;Hubei Normal University;Hubei Huangshi 435002;China;2.School of Science and Engineering;Yichun University;Jiangxi Yichun 336000;China |
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| Abstract: | The thermal entanglement of a two-qubit XXZ Heisenberg model in a homogeneous magnetic field is studied,and this model is used as quantum channel to teleport a two-qubit pure state,then the concurrence of teleported state and the average fidelity of teleportation are calculated,finally the influences on the concurrence and average fidelity in terms of the parameters of the Hamiltonian and T are discussed. |
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| Keywords: | thermal entanglement concurrence fidelity quantum teleportation |
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