The correlation matrices or tensors in the Bloch representation of density matrices are encoded with entanglement properties. In this paper, based on the Bloch representation of density matrices, we give some new separability criteria for bipartite and multipartite quantum states. Theoretical analysis and some examples show that the proposed criteria can be more efficient than the previous related criteria.
@article{arxiv.1608.01547,
title = {Improved Separability Criteria Based on Bloch Representation of Density Matrices},
author = {Shu-Qian Shen and Juan Yu and Ming Li and Shao-Ming Fei},
journal= {arXiv preprint arXiv:1608.01547},
year = {2016}
}