IMPROVED BOUNDS ON NEGATIVITY OF SUPERPOSITIONS

被引：0
|
作者：
Ma, Zhi-Hao [1 ,6 ]
Chen, Zhi-Hua [2 ]
Han, Shuai [3 ]
Fei, Shao-Ming [4 ]
Severini, Simone [5 ,6 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Math, Shanghai 200240, Peoples R China
[2] Zhejiang Univ Technol, Dept Sci, Zhijiang Coll, Hangzhou 310024, Zhejiang, Peoples R China
[3] Shanghai Jiao Tong Univ, SJTU Coll, Shanghai 200240, Peoples R China
[4] Capital Normal Univ, Dept Math, Beijing 100037, Peoples R China
[5] UCL, Dept Comp Sci, London WC1E 6BT, England
[6] UCL, Dept Phys & Astron, London WC1E 6BT, England
来源：
QUANTUM INFORMATION & COMPUTATION | 2012年 / 12卷 / 11-12期
关键词：
Superpositions; Pure states; Negativity;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We consider an alternative formula for the negativity based on a simple generalization of the concurrence. We use the formula to bound the amount of entanglement in a superposition of two bipartite pure states of arbitrary dimension. Various examples indicate that our bounds are tighter than the previously known results.
引用
收藏
页码：983 / 988
页数：6
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