Continuous Multipartite Entangled State in Wigner Representation and the Violation of Zukowski-Brukner Inequality
Quantum Physics
2009-11-10 v2
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.
Keywords
Cite
@article{arxiv.quant-ph/0309207,
title = {Continuous Multipartite Entangled State in Wigner Representation and the Violation of Zukowski-Brukner Inequality},
author = {Chunfeng Wu and Jing-Ling Chen and L. C. Kwek and C. H. Oh and Kang Xue},
journal= {arXiv preprint arXiv:quant-ph/0309207},
year = {2009}
}
Comments
5 pages, rewritten version, accepted by Phys. Rev. A