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MiS Preprint Repository

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MiS Preprint
29/2013

Characterization of four-qubit states via Bell inequalities

Hui Zhao, Xing-Hua Zhang, Shao-Ming Fei and Zhi-Xi Wang

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.

Received:
22.02.2013
Published:
26.02.2013
PACS:
03.67.Mn, 03.65.Ud
Keywords:
Bell inequalities, separability, Bell operators

Related publications

inJournal
2013 Journal Open Access
Hui Zhao, Xing-Hua Zhang, Shao-Ming Fei and Zhi-Xi Wang

Characterization of four-qubit states via Bell inequalities

In: Chinese science bulletin, 58 (2013) 19, pp. 2334-2339