Separability criteria based on Heisenberg-Weyl representation of density matrices

Separability criteria based on Heisenberg-Weyl representation of density matrices
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基于密度矩阵 Heisenberg-Weyl 表示的可分离性准则

DOI:
10.1088/1674-1056/27/3/030302
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发表时间:
2018-03-01
期刊:
影响因子:
1.7
通讯作者:
Fei, Shao-Ming
Fei, Shao-Ming
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Chang, Jingmei;Cui, Meiyu;Fei, Shao-Ming

文献摘要

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可分性是量子纠缠理论中的一个重要问题。利用海森堡-外尔可观测基下量子态的布洛赫表示,我们提出了二体量子系统的一个新的可分性准则。结果表明,该判据在检测纠缠度方面优于以往的判据。结果被推广到多体量子态。
Separability is an important problem in theory of quantum entanglement. By using the Bloch representation of quantum states in terms of the Heisenberg-Weyl observable basis, we present a new separability criterion for bipartite quantum systems. It is shown that this criterion can be better than the previous ones in detecting entanglement. The results are generalized to multipartite quantum states.