| 外磁场对两量子比特间热纠缠的影响 |
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| 引用本文： | 张保社,丁希顺. 外磁场对两量子比特间热纠缠的影响[J]. 河南大学学报(自然科学版), 2007, 37(5): 465-467 |
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| 作者姓名： | 张保社 丁希顺 |
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| 作者单位： | 安阳师范学院,实验中心,河南,安阳,455000;安阳师范学院,实验中心,河南,安阳,455000 |
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| 摘 要： | 研究了在相反方向的外磁场中两个量子比特的热纠缠,计算了这个体系的密度矩阵,通过密度矩阵得到了三个不同温度下热纠缠度—并协度.发现在相反磁场中,比特间的热纠缠度及转变温度将被提高.
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| 关 键 词： | 量子比特 热纠缠 并协度 |
| 文章编号： | 1003-4978（2007）05-0465-03 |
| 修稿时间： | 2007-04-16 |
Two-qubit Thermal Entanglement in Opposite External Magnetic Field |
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| ZHANG Bao-she,DING Xi-shun. Two-qubit Thermal Entanglement in Opposite External Magnetic Field[J]. Journal of Henan University(Natural Science), 2007, 37(5): 465-467 |
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| Authors: | ZHANG Bao-she DING Xi-shun |
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| Affiliation: | Experiment Center of Anyang Normal University, Henan Anyang 455000, China |
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| Abstract: | The thermal entanglement between two qubits in an opposite external magnetic field is investigated in this paper.It gets the density matrix of this system first.Then,concurrence,the measurement of entanglement is present at three different temperatures.It finds that the entanglement between two qubits and the critical temperature will be enhanced in an opposite magnetic field. |
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| Keywords: | qubit thermal entanglement concurrence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
