中国物理B ›› 2011, Vol. 20 ›› Issue (8): 80301-080301.doi: 10.1088/1674-1056/20/8/080301
谢利军, 张登玉, 汪新文, 詹孝贵, 唐世清, 高峰
收稿日期:
2010-12-14
修回日期:
2011-03-16
出版日期:
2011-08-15
发布日期:
2011-08-15
基金资助:
Xie Li-Jun(谢利军)†, Zhang Deng-Yu(张登玉), Wang Xin-Wen(汪新文)‡ Zhan Xiao-Gui(詹孝贵), Tang Shi-Qing(唐世清), and Gao Feng(高峰)
Received:
2010-12-14
Revised:
2011-03-16
Online:
2011-08-15
Published:
2011-08-15
Supported by:
摘要: This paper demonstrates that multipartite Bell-inequality violations can be fully destroyed in a finite time in three-qubit states coupled to a general XY spin-chain with a three-site interaction environment. The Mermin—Ardehali—Belinksii—Klyshko inequality is used 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 the environment and the strength of the three-site interaction on the Bell-inequality violations are given. The results indicate that the Bell-inequality violations of the tripartite states will be completely destroyed by decoherence under certain conditions for the GHZ state. The decoherence-free subspaces of our model are identified and the entanglement of quantum states is also discussed.
中图分类号: (Entanglement and quantum nonlocality)
谢利军, 张登玉, 汪新文, 詹孝贵, 唐世清, 高峰. Tripartite states Bell-nonlocality sudden death in a spin environment with multisite interaction[J]. 中国物理B, 2011, 20(8): 80301-080301.
Xie Li-Jun(谢利军), Zhang Deng-Yu(张登玉), Wang Xin-Wen(汪新文) Zhan Xiao-Gui(詹孝贵), Tang Shi-Qing(唐世清), and Gao Feng(高峰) . Tripartite states Bell-nonlocality sudden death in a spin environment with multisite interaction[J]. Chin. Phys. B, 2011, 20(8): 80301-080301.
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