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Ma, J; Huang, YX; Wang, XG; Sun, CP; Ma, J (reprint author), Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China.
Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels
发表期刊PHYSICAL REVIEW A
语种英语
关键词Statistical Distance Hilbert-space Sudden-death Entanglement Metrology Limit
摘要Quantum Fisher information of a parameter characterizes the sensitivity of the state with respect to changes of the parameter. In this article, we study the quantum Fisher information of a state with respect to SU(2) rotations under three decoherence channels: the amplitude-damping, phase-damping, and depolarizing channels. The initial state is chosen to be a Greenberg-Horne-Zeilinger state of which the phase sensitivity can achieve the Heisenberg limit. By using the Kraus operator representation, the quantum Fisher information is obtained analytically. We observe the decay and sudden change of the quantum Fisher information in all three channels.
2011
ISSN1050-2947
卷号84期号:2页码:22302
学科领域Physics
收录类别SCI
项目资助者NSFC [11025527, 10874151, 10935010]; Ministry of Education ; NSFC [11025527, 10874151, 10935010]; Ministry of Education ; NSFC [11025527, 10874151, 10935010]; Ministry of Education ; NSFC [11025527, 10874151, 10935010]; Ministry of Education
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被引频次:89[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/311006/14298
专题理论物理所科研产出_SCI论文
通讯作者Ma, J (reprint author), Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China.
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GB/T 7714
Ma, J,Huang, YX,Wang, XG,et al. Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels[J]. PHYSICAL REVIEW A,2011,84(2):22302.
APA Ma, J,Huang, YX,Wang, XG,Sun, CP,&Ma, J .(2011).Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels.PHYSICAL REVIEW A,84(2),22302.
MLA Ma, J,et al."Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels".PHYSICAL REVIEW A 84.2(2011):22302.
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