Hui Zhao, Xing-Hua Zhang, Shao-Ming Fei, Zhi-Xi Wang
Published 2013-07-25Version 1
A set of Bell inequalities classifying the quantum entanglement of four-qubit states is presented. These inequalities involve only two measurement settings per observer and can characterize fully separable, bi-separable and tri-separable quantum states. In addition, a quadratic inequality of the Bell operators for four-qubit systems is derived.
Journal: Chinese Science Bulletin, 58(19) 2334,2013
Non-maximally entangled states: production, characterization and utilization
Characterization of the entanglement of two squeezed states
Characterization of multipartite entanglement in terms of local transformations
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