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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

Dynamic Characteristics of Quantum Fisher Information of Atomic System in Amplitude Damping Channel
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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. 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 am- plitude damping,the quantum Fisher information manifests oscillation charateristics.
出处 《吉首大学学报(自然科学版)》 CAS 2017年第4期23-26,共4页 Journal of Jishou University(Natural Sciences Edition)
基金 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)
关键词 量子Fisher信息 振幅阻尼 非马尔可夫环境 quantum Fisher information amplitude damping non-Makovain environment
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