title: Test of nonlocality for a continuous-variable state based on an arbitrary number of measurement outcomes.
abstract: 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.
authors.affiliation: School of Mathematics and Physics, The Queen's University, Belfast BT7 1NN, United Kingdom.
authors.forename: W
authors.initials: W
authors.lastname: Son
authors.forename: C
authors.initials: C
authors.lastname: Brukner
authors.forename: M S
authors.initials: MS
authors.lastname: Kim