| 两个海森堡热纠缠信道中纠缠态的隐形传送 |
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| 引用本文： | 唐煌,方建兴,钱学旻.两个海森堡热纠缠信道中纠缠态的隐形传送[J].光子学报,2008,37(5):1063-1066. |
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| 作者姓名： | 唐煌 方建兴 钱学旻 |
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| 作者单位： | 江苏技术师范学院,物理系,江苏,常州,213001;苏州大学,物理科学与技术学院,江苏,苏州215006 |
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| 基金项目： | 江苏省教育厅自然科学基金
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江苏技术师范学院青年科研基金 |
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| 摘 要： | 利用两个海森堡热纠缠信道,实现了一对量子纠缠态的隐形传送,求得输出的密度矩阵,进而算出隐形传送的保真度.分析外界环境（温度T和磁场B）对热纠缠及量子隐形传送的影响.发现在磁场较弱,温度很低的时候,以海森堡热纠缠混合态作为量子信道进行隐形传送优于经典信道.
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| 关 键 词： | 隐形传送 热纠缠态 纠缠度 保真度 |
| 收稿时间： | 2006-12-12 |
| 修稿时间： | 2007-03-08 |
Entanglement Teleportation in Two Heisenberg Model |
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| TANG Huang,FANG Jian-xing,QIAN Xue-min.Entanglement Teleportation in Two Heisenberg Model[J].Acta Photonica Sinica,2008,37(5):1063-1066. |
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| Authors: | TANG Huang FANG Jian-xing QIAN Xue-min |
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| Abstract: | Entanglement teleportation, using thermally entangled state of two two-qubit Heisenberg XX chain as resource, was carried out. The deferent density operator and the fidelity of teleportation were calculated. And then, how the entanglement teleportation depends on the temperature and the magnetic field was analyzed. The results show that the entanglement teleportation of the mixed quantum channel is superior to the classical communication when the magnetic field B is feebleness and the temperature T is very low. |
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| Keywords: | Teleportation Thermally entangled state Concurrence Fidelity |
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