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arXiv · 2409.11273

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

Yan Hong·Xinlan Hao·Limin Gao
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Abstract

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 $-1\leq s\leq0$ 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.

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Yan Hong, Xinlan Hao, Limin Gao. 2024-09-17. Several families of entanglement criteria for multipartite quantum systems based on generalized Wigner-Yanase skew information and variance. https://arxiv.org/abs/2409.11273

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