Continuous multipartite entangled state in Wigner representation and violation of the Zukowski-Brukner inequality

Journal Article · Mon Jan 31 23:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.022110· OSTI ID:20650045

Chunfeng, Wu; Jingling, Chen; Oh, C H ^[1]; Kwek, L C ^[1]; Kang, Xue ^[2]

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1. Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 Singapore (Singapore)
2. Department of Physics, Northeast Normal University, Changchun 130024 (China)

We construct an explicit Wigner function for the 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 nonlocality of the multipartite entangled state by the violation of the Zukowski-Brukner N-qubit Bell inequality. We find that quantum predictions for such a squeezed state violate these inequalities by an amount that grows with the number N.

• OSTI ID: 20650045
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BELL THEOREM
CORRELATIONS
ENERGY LEVELS
PARITY
PHASE SPACE
QUANTUM MECHANICS
QUANTUM NUMBERS
WIGNER DISTRIBUTION