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Paper detail

Separability criteria based on Bloch representation of density matrices

We study separability criteria in multipartite quantum systems of arbitrary dimensions by using the Bloch representation of density matrices. We first derive the norms of the correlation tensors and obtain the necessary conditions for separability under partition of tripartite and four-partite quantum states. Moreover, based on the norms of the correlation tensors,we obtain the separability criteria by matrix method. Using detailed examples, our results are seen to be able to detect more entangled states than previous studies. Finally, necessary conditions of separability for multipartite systems are given under arbitrary partition.

preprint2020arXivOpen access
Hui ZhaoMei-Ming ZhangNaihuan JingZhi-Xi Wang
quant-ph
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Hui ZhaoMei-Ming ZhangNaihuan JingZhi-Xi Wang

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