Disentanglement in a quantum-critical environment
文献类型：期刊论文
| 作者 | Sun, Zhe; Wang, Xiaoguang; Sun, C. P. ; Wang, XG , Zhejiang Univ, Inst Modern Phys, Dept Phys, Hangzhou 310027, Peoples R China
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| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2007 |
| 卷号 | 75期号:6页码:- |
| 关键词 | Heisenberg-chains Entanglement Separability States |
| ISSN号 | 1050-2947 |
| 英文摘要 | We study the dynamical process of disentanglement of two qubits and two qutrits coupled to an Ising spin chain in a transverse field, which exhibits a quantum phase transition. We use the concurrence and negativity to quantify entanglement of two qubits and two qutrits, respectively. Explicit connections between the concurrence (negativity) and the decoherence factors are given for two initial states, the pure maximally entangled state and the mixed Werner state. We find that the concurrence and negativity decay exponentially with fourth power of time in the vicinity of the critical point of the environmental system. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000247624300050 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5719]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Wang, XG , Zhejiang Univ, Inst Modern Phys, Dept Phys, Hangzhou 310027, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Zhe,Wang, Xiaoguang,Sun, C. P.,et al. Disentanglement in a quantum-critical environment[J]. PHYSICAL REVIEW A,2007,75(6):-. |
| APA | Sun, Zhe,Wang, Xiaoguang,Sun, C. P.,&Wang, XG , Zhejiang Univ, Inst Modern Phys, Dept Phys, Hangzhou 310027, Peoples R China.(2007).Disentanglement in a quantum-critical environment.PHYSICAL REVIEW A,75(6),-. |
| MLA | Sun, Zhe,et al."Disentanglement in a quantum-critical environment".PHYSICAL REVIEW A 75.6(2007):-. |
入库方式： OAI收割
来源：理论物理研究所
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