Test of Nonlocality for a Continuous-Variable State Based on an Arbitrary Number of Measurement Outcomes

Author(s): W. Son, Č. Brukner, M. S. Kim

Journal: Physical Review Letters

Volume: 97

Page(s): 110401

Year: 2006

DOI Number: 10.1103/PhysRevLett.97.110401

Link: Link to publication


We propose a scheme to test Bell’s inequalities for an arbitrary number of measurement outcomes on entangled continuous-variable (CV) states. The Bell correlation functions are expressible in terms of phase-space quasiprobability functions with complex ordering parameters, which can experimentally be

determined via a local CV-qubit interaction. We demonstrate that CV systems can give higher violations of these Bell’s inequalities than of the ones developed for two-outcome observables.

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