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arXiv · 2005.05533

A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance

Qing-Hua Zhang·Shao-Ming Fei
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Abstract

We derive criterion in the form of inequality based on quantum Fisher information and quantum variance to detect multipartite entanglement. It can be regarded as complementary of the well-established PPT criterion in the sense that it can also detect bound entangled states. The inequality is motivated by Y.Akbari-Kourbolagh $et\ al.$[Phys. Rev A. 99, 012304 (2019)] which introduced a multipartite entanglement criterion based on quantum Fisher information. Our criterion is experimentally measurable for detecting any $N$-qudit pure state mixed with white noisy. We take several examples to illustrate that our criterion has good performance for detecting certain entangled states.

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Qing-Hua Zhang, Shao-Ming Fei. 2020-05-12. A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance. https://doi.org/10.1088/1612-202x%2Fab8793

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