| 量子纠缠消相干对确定型远程制备的影响 |
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| 引用本文： | 郭振,闫连山,潘炜,罗斌,徐明峰. 量子纠缠消相干对确定型远程制备的影响[J]. 物理学报, 2011, 60(6): 60301-060301 |
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| 作者姓名： | 郭振 闫连山 潘炜 罗斌 徐明峰 |
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| 作者单位： | 西南交通大学信息科学与技术学院,信息光子与通信研究中心,成都 610031 |
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| 基金项目： | 国家自然科学基金(批准号:60972003)和教育部新世纪优秀人才支持计划(批准号:NCET-08-0821)资助的课题. |
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| 摘 要： | 研究了两种典型的量子纠缠消相干现象对确定型量子态远程制备方案的影响.首先对该确定型远程制备方案进行了分析,得到该方案确定性和比特消耗情况; 然后通过分析制备过程中纠缠消相干现象对系统的影响得出: 在极化消相干过程中,该系统保真度与目标量子比特在Bloch球上的经度选择无关,仅与目标比特的纬度和消相干的大小有关;在相位消相干中,该系统的保真度不会受到消相干的影响,仅与目标量子态的纬度相关.关键词：远程制备纠缠消相干通信消耗保真度
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| 关 键 词： | 远程制备 纠缠消相干 通信消耗 保真度 |
| 收稿时间： | 2010-06-29 |
Influence of decoherence of entanglement on deterministic remote state preparation |
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| Guo Zhen,Yan Lian-Shan,Pan Wei,Luo Bin,Xu Ming-Feng. Influence of decoherence of entanglement on deterministic remote state preparation[J]. Acta Physica Sinica, 2011, 60(6): 60301-060301 |
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| Authors: | Guo Zhen Yan Lian-Shan Pan Wei Luo Bin Xu Ming-Feng |
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| Affiliation: | Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;Center for Information Photonics and Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | We investigate the influence of decoherence of entanglement on the deterministic remote state preparation. Firstly, the determinability and the depletion of entanglement bits and classical bits are obtained. Then two kinds of decoherent channels (depolarizing and dephasing) are analyzed. For the depolarizing channel, the fidelity is related only to the depolarization and the latitude of target quantum bits on the Bloch sphere, but is independent of longitude. For the dephasing channel, the fidelity is not affected by the quantum channel and only related to the latitude of target quantum bits. |
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| Keywords: | remote state preparation decoherence of entanglement cost fidelity |
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