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Sun, Zhe; Wang, Xiaoguang; Sun, C. P.; Wang, XG , Zhejiang Univ, Inst Modern Phys, Dept Phys, Hangzhou 310027, Peoples R China
Disentanglement in a quantum-critical environment
发表期刊PHYSICAL REVIEW A
关键词Heisenberg-chains Entanglement Separability States
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.
2007
ISSN1050-2947
卷号75期号:6页码:-
学科领域Physics
收录类别SCI
引用统计
被引频次:107[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5719
专题理论物理所科研产出_SCI论文
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):-.
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