| 非线性一维光学晶格链中的热纠缠 |
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| 引用本文： | 周玲,衣学喜,宋鹤山,郭彦青.非线性一维光学晶格链中的热纠缠[J].中国物理 B,2005,14(6):1168-1173. |
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| 作者姓名： | 周玲 衣学喜 宋鹤山 郭彦青 |
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| 作者单位： | Department of Physics,Dalian University of Technology,Dalian 116024,China;Department of Physics,Dalian University of Technology,Dalian 116024,China;Department of Physics,Dalian University of Technology,Dalian 116024,China;Department of Physics,Dalian University of Technology,Dalian 116024,China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos 10347103 and 10305002 |
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| 摘 要： | 本文对非线性光学晶格链中自旋为1的原子，在两原子以及多原子链中紧邻原子之间的热纠缠问题作了详尽的研究，结果表明非线性耦合和线性耦合系数之间的关系对界定热纠缠是否存在起到关键作用，由于不同的原子这两种耦合对应着不同的关系，这一研究揭示在那些种类的原子中存在热纠缠；这一结果对两粒子以及多粒子体系都是成立的。在多粒子情况下临界温度以及热纠缠仅有少许下降。
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| 关 键 词： | 光学晶格链，非线性耦合，热纠缠 |
| 收稿时间： | 8/2/2004 12:00:00 AM |
Thermal entanglement in 1D optical lattice chains with nonlinear coupling |
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| Zhou Ling,Yi Xue-Xi,Song He-Shan and Guo Yan-Qing.Thermal entanglement in 1D optical lattice chains with nonlinear coupling[J].Chinese Physics B,2005,14(6):1168-1173. |
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| Authors: | Zhou Ling Yi Xue-Xi Song He-Shan and Guo Yan-Qing |
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| Institution: | Department of Physics,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | The thermal entanglement of spin-1 atoms with nonlinear coupling in an optical lattice chain is investigated for two-particle and multi-particle systems.It is flund that the relation between linear coupling and nonlinear coupling is the key to determine thermal entanglement, which shows in what kinds of atomsthermal entanglement exists.Thisresult is true both for two-particle and multi-particle systems. For multi-particle systems,the thermal entanglement does not decrease greatly,and the critical temperature decreases only slightly. |
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| Keywords: | optical lattice chain nonlinear coupling thermal entanglement |
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