Lower bound of multipartite concurrence based on sub-partite quantum systems

被引：3
|
作者：
Chen, Wei [1 ]
Zhu, Xue-Na [2 ]
Fei, Shao-Ming [3 ,4 ]
Zheng, Zhu-Jun [5 ]
机构：
[1] Dongguan Univ Technol, Sch Comp Sci & Network Secur, Dongguan 523808, Peoples R China
[2] Ludong Univ, Dept Math & Stat Sci, Yantai 264025, Peoples R China
[3] Capital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China
[4] Max Planck Inst Math Sci, D-04103 Leipzig, Germany
[5] South China Univ Technol, Sch Math, Guangzhou 510641, Guangdong, Peoples R China
来源：
QUANTUM INFORMATION PROCESSING | 2017年 / 16卷 / 12期
关键词：
Concurrence; Lower bound of concurrence; Four-partite mixed states; Multipartite quantum systems; ENTANGLEMENT; CRYPTOGRAPHY; STATE;
D O I：
10.1007/s11128-017-1742-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the concurrence of arbitrary dimensional multipartite quantum systems. An explicit analytical lower bound of concurrence for four-partite mixed states is obtained in terms of the concurrences of tripartite mixed states. Detailed examples are given to show that our lower bounds improve the existing lower bounds of concurrence. The approach is generalized to five-partite quantum systems.
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收藏
页数：13
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