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arXiv · 1307.6656

Characterization of four-qubit states via Bell inequalities

Hui Zhao·Xing-Hua Zhang·Shao-Ming Fei·Zhi-Xi Wang
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Abstract

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.

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Hui Zhao, Xing-Hua Zhang, Shao-Ming Fei, Zhi-Xi Wang. 2013-07-25. Characterization of four-qubit states via Bell inequalities. https://arxiv.org/abs/1307.6656

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