Several families of entanglement criteria for multipartite quantum systems based on the generalized Wigner-Yanase skew information and variance

被引:0
|
作者
Hong, Yan [1 ,2 ]
Hao, Xinlan [1 ]
Gao, Limin [1 ,2 ]
机构
[1] Hebei GEO Univ, Sch Math & Sci, Shijiazhuang 050031, Peoples R China
[2] Hebei GEO Univ, Intelligent Sensor Network Engn Res Ctr Hebei Prov, Shijiazhuang 050031, Peoples R China
基金
中国国家自然科学基金;
关键词
entanglement detection; the generalized Wigner-Yanase skew information; variance; mutually unbiased measurements; general symmetric informationally complete measurements; SEPARABILITY CRITERION;
D O I
10.1088/1612-202X/ad8cc6
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Quantum entanglement plays a critical role in many quantum applications, but detecting entanglement, especially in multipartite or high-dimensional quantum systems, remains a challenge. In this paper, we propose several families of entanglement criteria for detecting entanglement in multipartite or high-dimensional quantum states by the generalized Wigner-Yanase skew information I-s(rho,X) for -1 <= s <= 0 and variance. We also reveal a complementary character between the criteria based on the generalized Wigner-Yanase skew information and an alternative one based on variance through specific examples. We illustrate the merits of these criteria and show that the combination of the entanglement criteria has a stronger detection capability, as it is capable of detecting entangled states that remain unrecognized by other criteria.
引用
收藏
页数:8
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