自然科学版
陕西师范大学学报(自然科学版)
物理学
三体量子纯态可分与纠缠的刻画
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梁文婷, 陈峥立*
(陕西师范大学 数学与信息科学学院, 陕西 西安 710119)
陈峥立,男,副教授,博士。E-mail:czl@snnu.edu.cn
摘要:
利用三体量子纯态的Schmidt分解给出其完全可分的等价刻画以及若干推论。借助相对熵和互信息给出三体量子纯态完全可分的等价刻画,进而得到三体量子纯态是可分或纠缠的充要条件,并给出几个典型的例子。
关键词:
三体量子纯态;完全可分;von Neumann熵;Schmidt分解
收稿日期:
2016-05-22
中图分类号:
O177.1
文献标识码:
A
文章编号:
1672-4291(2017)03-0024-05doi:10.15983/j.cnki.jsnu.2017.03.135
基金项目:
国家自然科学基金(11371012,11571213); 中央高校基本科研业务费专项资金(GK201002006)
Doi:
Characterization of separability and entanglement for tripartite quantum pure states
LIANG Wenting, CHEN Zhengli*
(School of Mathematics and Information Science, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)
Abstract:
Characterization of the full separability for tripartite quantum pure states and several corollaries are given out by their Schmidt decomposition. Two theorems to characterize the full separability for tripartite quantum pure states by conditional entropy and mutual information are given and then several necessary and sufficient conditions to characterize the different kinds of separability and entanglement for them are obtained.Several typical examples are given.
KeyWords:
tripartite quantum pure states; full separability; von Neumann entropy; Schmidt decomposition