| 三量子位Heisenberg XX 链中杂质对纠缠的影响 |
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| 引用本文： | 张涛,惠小强,岳瑞宏.三量子位Heisenberg XX 链中杂质对纠缠的影响[J].物理学报,2004,53(8):2755-2760. |
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| 作者姓名： | 张涛 惠小强 岳瑞宏 |
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| 作者单位： | (1)西安邮电学院应用数理系，西安 710061; (2)西北大学现代物理研究所，西安 710069 |
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| 摘 要： | 研究了有杂质时三量子位Heisenberg-XX链中正常格点之间的热纠缠情况，给出了Concurrence的解析表达式.进一步的讨论发现，杂质对正常格点的热纠缠有着重要的影响，甚至能够改变纠缠在反铁磁区的特性.理论表明，可以通过调节温度和杂质参数来控制纠缠.
关键词：
Heisenberg -XX链
热纠缠
杂质格点
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| 关 键 词： | Heisenberg -XX链 热纠缠 杂质格点 |
| 文章编号： | 1000-3290/2004/53(08)/2755-06 |
| 收稿时间： | 2003-10-22 |
The effect of impurity on the entanglement between the normal lattice in three-qubit Heisenberg XX chain |
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| Zhang Tao,Xi Xiao-Qiang and Yue Rui-Hong.The effect of impurity on the entanglement between the normal lattice in three-qubit Heisenberg XX chain[J].Acta Physica Sinica,2004,53(8):2755-2760. |
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| Authors: | Zhang Tao Xi Xiao-Qiang and Yue Rui-Hong |
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| Abstract: | In this paper,we study the effect of impurity on the thermal entanglement between the normal lattice in three-qubit Heisenberg XX chain,and give the analytical expression of the concurrence.According to the discussion of our result,we find that the impurity parameter has a great effect on the pairwise thermal entanglement,it even can change the characters of the entanglement to some degree. |
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| Keywords: | Heisenberg-XX chain thermal entanglement impurity lattice |
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