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Continuous Multipartite Entangled State in Wigner Representation and the Violation of Zukowski-Brukner Inequality

Chunfeng Wu·Jing-Ling Chen·L. C. Kwek·C. H. Oh·Kang Xue
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Abstract

We construct an explicit Wigner function for N-mode squeezed state. Based on a previous observation that the Wigner function describes correlations in the joint measurement of the phase-space displaced parity operator, we investigate the non-locality of multipartite entangled state by the violation of Zukowski-Brukner N-qubit Bell inequality. We find that quantum predictions for such squeezed state violate these inequalities by an amount that grows with the number N.

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Chunfeng Wu, Jing-Ling Chen, L. C. Kwek, C. H. Oh, Kang Xue. 2004-12-21. Continuous Multipartite Entangled State in Wigner Representation and the Violation of Zukowski-Brukner Inequality. https://doi.org/10.1103/physreva.71.022110

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