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振幅阻尼通道中原子系统的量子Fisher信息动力学特性
引用本文:郭秀丽,张延亮,周清平.振幅阻尼通道中原子系统的量子Fisher信息动力学特性[J].吉首大学学报(自然科学版),2017,38(4):23-26.
作者姓名:郭秀丽  张延亮  周清平
作者单位:(1.吉首大学物理与机电工程学院,湖南 吉首 416000;2.吉首大学软件学院,湖南 张家界 427000)
基金项目:国家自然科学基金资助项目 (11464015);湖南省自然科学基金资助项目(14JJ6035);湖南省教育厅优秀青年项目(14B147)
摘    要:对二能级原子单量子比特系统的量子Fisher信息在振幅阻尼噪声环境中的动力学过程进行了研究,并分析量子Fisher信息的演化特性.结果表明:在振幅阻尼的马尔可夫环境中,量子Fisher信息单调递减直至消失;在振幅阻尼的非马尔可夫环境中,量子Fisher信息出现振荡现象.

关 键 词:量子Fisher信息  振幅阻尼  非马尔可夫环境

Dynamic Characteristics of Quantum Fisher Information of Atomic System in Amplitude Damping Channel
GUO Xiuli,ZHANG Yanliang,ZHOU Qingping.Dynamic Characteristics of Quantum Fisher Information of Atomic System in Amplitude Damping Channel[J].Journal of Jishou University(Natural Science Edition),2017,38(4):23-26.
Authors:GUO Xiuli  ZHANG Yanliang  ZHOU Qingping
Institution:(1.College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China;2.College of Software and Service Outsourcing,Jishou University,Zhangjiajie 427000,Hunan China)
Abstract:The dynamics of quantum Fisher information of single two-level atomic system in amplitude damping noise environment are investigated,and the evolution characteristics of quantum Fisher information are analyzed.The results show that the quantum Fisher information decreases monotonically and disappears in a Markovian environment of amplitude damping.In the non-Markovian environment of amplitude damping,the quantum Fisher information manifests oscillation charateristics.
Keywords:quantum Fisher information                                                                                                                        amplitude damping                                                                                                                        non-Makovain environment
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