一类5×5的可分量子态的可分表示(英文)  

Decompositions for a class of 5×5 separable quantum states

作　　者：黄晓芬[1] 

机构地区：[1]海南师范大学数学与统计学院,海南海口571158

出　　处：《华东师范大学学报（自然科学版）》2014年第1期1-8,共8页Journal of East China Normal University(Natural Science)

基　　金：海南省自然科学基金(111006,113004);海南师范大学博士科研启动基金(00203020217)

摘　　要：研究了一类5×5的两体量子态,证明其可分的充分必要条件是它的部分转置矩阵为半正定矩阵(PPT),并且构造出了这类可分态的一种可分分解表示.用此方法,可判别一类量子态是否纠缠.This paper studied certain quantum states for which the PPT criterion was both sufficient and necessary for separability. A class of 5× 5, bipartite mixed states was prestented and the conditions of PPT for these states were derived. The separable pure state decompositions of these states were explicitly constructed when they were PPT, so we can judge a class of states entangled or not by this method.

关 键 词：PPT 纠缠 可分性 

分 类 号：O29[理学—应用数学]