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We construct an explicit Wigner function for N-mode squeezed state. Based ona previous observation that the Wigner function describes correlations in thejoint measurement of the phase-space displaced parity operator, we investigatethe non-locality of multipartite entangled state by the violation ofZukowski-Brukner N-qubit Bell inequality. We find that quantum predictions forsuch squeezed state violate these inequalities by an amount that grows with thenumber N.Comment: 5 pages, rewritten version, accepted by Phys. Rev.

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