多体量子态基于迭代重排的k可分性判据k-Separability Criterion for Multipartite Quantum States Based on Iterated Realignment
周芳宇,王银珠
摘要(Abstract)：
在(Quantum information Processing, 2017,16,106),对于多体复合量子系统量子态，基于密度算子的迭代重排给出了多体量子态完全可分的一个必要条件。将其推广到了多体量子态相对于k体分划的情形，首先讨论了多体量子态相对于k体分划的迭代重排的定义及性质，然后基于此迭代重排的定义，给出了多体量子态k可分的一个必要条件，并通过一个例子说明该判据是有效的，其可以探测多体k不可分纠缠态。
关键词(KeyWords)： 多体量子系统;量子态;迭代重排;k可分性
基金项目(Foundation): 山西省自然科学基金(201901D111254)
作者(Author): 周芳宇,王银珠
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