Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels
文献类型：期刊论文
| 作者 | Sun, CP
|
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:2页码:22302 |
| 关键词 | STATISTICAL DISTANCE HILBERT-SPACE SUDDEN-DEATH ENTANGLEMENT METROLOGY LIMIT |
| ISSN号 | 1050-2947 |
| 通讯作者 | Ma, J (reprint author), Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | NSFC [11025527, 10874151, 10935010]; Ministry of Education |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevA.84.022302 |
| 语种 | 英语 |
| WOS记录号 | WOS:000293373900006 |
| 公开日期 | 2013-05-17 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14298]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Sun, CP. Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels[J]. PHYSICAL REVIEW A,2011,84(2):22302. |
| APA | Sun, CP.(2011).Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels.PHYSICAL REVIEW A,84(2),22302. |
| MLA | Sun, CP."Quantum Fisher information of the Greenberg-Horne-Zeilinger state in decoherence channels".PHYSICAL REVIEW A 84.2(2011):22302. |
入库方式： OAI收割
来源：理论物理研究所
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