克
连贯性(哲学赌博策略)
格拉米安矩阵
统计物理学
基质(化学分析)
熵(时间箭头)
Kullback-Leibler散度
数学
国家(计算机科学)
量子
量子力学
物理
算法
统计
特征向量
遗传学
材料科学
细菌
复合材料
生物
作者
Wendao Yuan,Zhaoqi Wu,Shao-Ming Fei
标识
DOI:10.1088/1612-202x/ac9970
摘要
Abstract The Gram matrix of an ensemble of pure states can be regarded as a quantum state, and the quantumness of the ensemble can be quantified by the coherence of the Gram matrix. By using the affinity between mixed states, the concept of Gram matrix of pure-state ensembles can be extended to the one of mixed-state ensembles. By utilizing the generalized α - z -relative Rényi entropy of coherence of Gram matrices, we present a new quantifier of quantumness of mixed-sate ensembles and further reveal its peculiar properties. To illustrate our quantumness of mixed-sate ensembles, we also calculate the quantumness for some detailed mixed-sate ensembles by deriving their analytical formulae.
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