中国物理B ›› 2010, Vol. 19 ›› Issue (10): 100305-100305.doi: 10.1088/1674-1056/19/10/100305
张登玉, 谢利军, 唐世清, 詹孝贵, 陈银花, 高峰
收稿日期:
2010-01-30
修回日期:
2010-03-17
出版日期:
2010-10-15
发布日期:
2010-10-15
基金资助:
Zhang Deng-Yu(张登玉)† , Xie Li-Jun(谢利军)‡ , Tang Shi-Qing(唐世清), Zhan Xiao-Gui(詹孝贵), Chen Yin-Hua(陈银花), and Gao Feng(高峰)
Received:
2010-01-30
Revised:
2010-03-17
Online:
2010-10-15
Published:
2010-10-15
Supported by:
摘要: We demonstrate that multipartite Bell-inequalities violations can be fully destroyed in finite time in three-qubit states under a quantum-critical environment, which is an Ising model in a transverse field. We use the Mermin--Ardehali--Belinksii--Klyshko (MABK) inequality to detect the degree of nonlocality as measured by the extent of their violations. The effects of system-environment couplings, the size of degrees of freedom of environment and the strength of transverse field on the Bell-inequality violations are given for two different initial states, namely, the W class and GHZ class states. The results indicate that the Bell-inequality violations of the tripartite states will be completely destroyed by the decoherence under certain conditions.
中图分类号: (Entanglement and quantum nonlocality)
张登玉, 谢利军, 唐世清, 詹孝贵, 陈银花, 高峰. Tripartite states Bell-nonlocality sudden death in a quantum-critical environment[J]. 中国物理B, 2010, 19(10): 100305-100305.
Zhang Deng-Yu(张登玉), Xie Li-Jun(谢利军), Tang Shi-Qing(唐世清), Zhan Xiao-Gui(詹孝贵), Chen Yin-Hua(陈银花), and Gao Feng(高峰). Tripartite states Bell-nonlocality sudden death in a quantum-critical environment[J]. Chin. Phys. B, 2010, 19(10): 100305-100305.
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