A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance

• URL: http://arxiv.org/abs/2005.05533v1
• Date: Tue, 12 May 2020 03:14:53 GMT
• Title: A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance
• Authors: Qing-Hua Zhang, Shao-Ming Fei
• Abstract summary: We derive inequality based on quantum Fisher information and quantum variance to detect multipartite entanglement. Our criterion is experimentally measurable for detecting any $N$-qudit pure state mixed with white noisy.
• Score: 2.1320960069210484
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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