高斯态的量子相干度量

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英文篇名：Quantum Coherence Measure of Gaussian States 作者：王洋洋 ; 齐霄霏 英文作者：WANG Yangyang;QI Xiaofei;School of Mathematical Sciences,Shanxi University; 关键词：高斯态 ; 连续变量系统 ; 相干度量 ; 保真度 英文关键词：Gaussian state;;continuous-variable systems;;coherence measure;;fidelity 中文刊名：SXDR 英文刊名：Journal of Shanxi University(Natural Science Edition) 机构：山西大学数学科学学院; 出版日期：2018-09-10 16:57 出版单位：山西大学学报(自然科学版) 年：2019 期：v.42;No.163 基金：国家自然科学基金(11671006);; 山西省优秀青年基金(201701D211001) 语种：中文; 页：SXDR201901010 页数：6 CN：01 ISSN：14-1105/N 分类号：88-93

摘要

文章研究了由Uhlmann保真度诱导的高斯态量子相干度量CBu,通过sub-保真度,super-保真度以及Uhlmann保真度之间的关系,给出了单模与双模高斯纯态CBu的计算公式,并得到了单模与双模高斯混合态CBu的一个上下界。
        We study the quantum coherence measure CBuof Gaussian states in terms of Uhlmann fidelity.The concrete formulas for 1-mode and 2-mode Gaussian pure states are given.In addition,an upper and lower bound of CBufor 1-mode and 2-mode Gaussian mixed states is also obtained.

引文

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