

Preprint 64/2018
Separability criteria based on Heisenberg-Weyl representation of density matrices
Jingmei Chang, Meiyu Cui, Ting-Gui Zhang, and Shao-Ming Fei
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Submission date: 20. Aug. 2018
Pages: 7
published in: Chinese physics / B, 27 (2018) 3, art-no. 030302
DOI number (of the published article): 10.1088/1674-1056/27/3/030302
Bibtex
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Abstract:
Separability is an important problem in theory of quantum entanglement.
By using the Bloch representation of quantum states in terms of the Heisenberg-Weyl observable
basis, we present a new separability criterion for bipartite quantum systems.
It is shown that this criterion can be better than the previous ones in detecting entanglement.
The results are generalized to multipartite quantum states.