ITP OpenIR  > 理论物理所科研产出  > SCI论文
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
Source PublicationPHYSICAL REVIEW A
KeywordHeisenberg-chains Entanglement Separability States
AbstractWe 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
Volume75Issue:6Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:108[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5719
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWang, XG , Zhejiang Univ, Inst Modern Phys, Dept Phys, Hangzhou 310027, Peoples R China
Recommended Citation
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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