Monogamy relations in tripartite quantum system  

作　　者：李姣姣 王志玺 

机构地区：[1]School of Mathematical Sciences, Capital Normal University

出　　处：《Chinese Physics B》2010年第10期94-99,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 10871227);the Natural Science Foundation of Beijing (Grant No. 1092008)

摘　　要：This paper presents monogamy relations for three-qubit quantum states by using convex-roof extended negativity, which inspires studying the difference between the three entanglement measures, concurrence, negativity and convex- roof extended negativity. It finds that the convex-roof extended negativity is a stronger entanglement measure than concurrence in multipaxtite higher-dimensional quantum system.This paper presents monogamy relations for three-qubit quantum states by using convex-roof extended negativity, which inspires studying the difference between the three entanglement measures, concurrence, negativity and convex- roof extended negativity. It finds that the convex-roof extended negativity is a stronger entanglement measure than concurrence in multipaxtite higher-dimensional quantum system.

关 键 词：CONCURRENCE monogamy relation convex-roof extended negativity 

分 类 号：O413.1[理学—理论物理] B842.6[理学—物理]