| 噪声环境中两粒子纠缠态的纠缠消相干 |
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| 引用本文： | 向少华,宋克慧.噪声环境中两粒子纠缠态的纠缠消相干[J].物理学报,2006,55(2):529-534. |
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| 作者姓名： | 向少华 宋克慧 |
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| 作者单位： | 怀化学院物理与电子信息科学系,怀化 418008;怀化学院信息科学研究所,怀化 418008 |
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| 摘 要： | 借助于共生纠缠度和输入输出保真度考察了初始处于纠缠态的两粒子在联合噪声环境中的消纠缠特性.结果表明:两粒子纠缠态可分为相干保持态和脆弱纠缠态.对于脆弱纠缠态分析了它们在低温条件欧姆型耗散下的纠缠消相干演化动力学.
关键词：
热库
相干保持态
脆弱纠缠态
输入输出保真度
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| 关 键 词： | 热库 相干保持态 脆弱纠缠态 输入输出保真度 |
| 文章编号： | 1000-3290/2006/55(02)/0529-06 |
| 收稿时间： | 7/4/2005 12:00:00 AM |
| 修稿时间： | 8/9/2005 12:00:00 AM |
Entanglement decoherence of two-particle entangled states in a noisy environment |
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| Xiang Shao-Hua,Song Ke-Hui.Entanglement decoherence of two-particle entangled states in a noisy environment[J].Acta Physica Sinica,2006,55(2):529-534. |
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| Authors: | Xiang Shao-Hua Song Ke-Hui |
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| Institution: | Department of Physics and Electronic Information Science, Huaihua University, Huaihua 418008, China; Institute of lnformation Science , Huaihua University , Huaihua 418008,China |
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| Abstract: | Entanglement decoherence of two particles interacting with the same environment is investigated by means of concurrence and the input-output fidelity. It is found that the entangled states of two-particle system can be divided into two kinds, coherence-preserving states and fragile entangled states. The dynamics of entanglement decoherence for fragile entangled states is discussed by taking into account the ohmic dissipation under the low temperature approximation. |
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| Keywords: | thermal bath coherence-preserving state fragile entangled state input-output fidelity |
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