论文标题
基于亚面量子系统的W级状态的多部分同意
Multipartite concurrence of W-class states based on sub-partite quantum systems
论文作者
论文摘要
我们通过考虑到W级状态的结构来研究基于子系统的（N-1） - 目标分区的任意N-主要W级状态的同意。通过使用置换方法和组合方法，我们提供了一致的分析公式，多部分并发与任意多部分W级状态的（n-1） - 局限并发之间的优雅关系。应用这些关系，我们提出了多部分混合状态的更好的同意下限。举例说明我们的下限可以检测更多的纠缠。
We study the concurrence for arbitrary N-partite W-class states based on the (N-1)-partite partitions of subsystems by taking account to the structures of W-class states. By using the method of permutation and combination we give analytical formula of concurrence and some elegant relations between the multipartite concurrence and the (N-1)-partite concurrence for arbitrary multipartite W-class states. Applying these relations we present better lower bounds of concurrence for multipartite mixed states. An example is given to demonstrate that our lower bounds can detect more entanglements.
