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题名: Sudden vanishing of spin squeezing under decoherence
作者: Wang, Xiaoguang ;  Miranowicz, Adam ;  Liu, Yu-xi ;  Sun, C. P. ;  Nori, Franco
刊名: PHYSICAL REVIEW A
出版日期: 2010
卷号: 81, 期号:2, 页码:-
关键词: QUANTUM-NONDEMOLITION MEASUREMENT ;  TRAPPED IONS ;  ENTANGLEMENT ;  STATES ;  SPECTROSCOPY ;  SEPARABILITY ;  DEATH ;  LIGHT
学科分类: Physics
通讯作者: Wang, XG , RIKEN, Inst Phys & Chem Res, Adv Sci Inst, Wako, Saitama 3510198, Japan
部门归属: [Wang, XG; Miranowicz, A; Liu, YX; Nori, F] RIKEN, Inst Phys & Chem Res, Adv Sci Inst, Wako, Saitama 3510198, Japan; [Wang, XG] Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Zhejiang, Peoples R China; [Miranowicz, A] Adam Mickiewicz Univ Poznan, Fac Phys, PL-61614 Poznan, Poland; [Liu, YX] Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China; [Liu, YX] Tsinghua Univ, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China; [Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Nori, F] Univ Michigan, Dept Phys, Ctr Theoret Phys, Ann Arbor, MI 48109 USA
英文摘要: In order to witness multipartite correlations beyond pairwise entanglement, spin-squeezing parameters are analytically calculated for a spin ensemble in a collective initial state under three different decoherence channels. It is shown that, in analogy to pairwise entanglement, the spin squeezing described by different parameters can suddenly become zero at different vanishing times. This finding shows the general occurrence of sudden vanishing phenomena of quantum correlations in many-body systems, which here is referred to as spin-squeezing sudden death (SSSD). It is shown that the SSSD usually occurs due to decoherence and that SSSD never occurs for some initial states in the amplitude-damping channel. We also analytically obtain the vanishing times of spin squeezing.
资助者: National Security Agency; Laboratory of Physical Sciences; Army Research Office; National Science Foundation[0726909, JSPS-RFBR 06-02-91200]; National Natural Science Foundation of China[10874151]; National Fundamental Research Programs of China[2006CB921205]; Program for New Century Excellent Talents in University (NCET); Polish Ministry of Science and Higher Education[NN202 261938]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000275072500030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5164
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wang, Xiaoguang,Miranowicz, Adam,Liu, Yu-xi,et al. Sudden vanishing of spin squeezing under decoherence[J]. PHYSICAL REVIEW A,2010,81(2):-.
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