Phys. Rev. A 70, 032112 (2004) - Enhancement of nonlocality in phase space

Enhancement of nonlocality in phase space

Stefano Olivares and Matteo G. A. Paris

Phys. Rev. A 70, 032112 – Published 29 September 2004

Abstract

We show that inconclusive photon subtraction (IPS) on a twin beam produces non-Gaussian states that violate Bell’s inequality in the phase space. The violation is larger than for the twin beam itself irrespective of the IPS quantum efficiency. The explicit expression for the IPS map is given both for the density matrix and the Wigner function representations.

Received 4 June 2004

DOI:https://doi.org/10.1103/PhysRevA.70.032112

©2004 American Physical Society

Authors & Affiliations

Stefano Olivares^* and Matteo G. A. Paris^†

Dipartimento di Fisica dell’Università degli Studi di Milano, Milano, Italy

^*Electronic address: Stefano.Olivares@mi.infn.it
^†Electronic address: Matteo.Paris@fisica.unimi.it

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Issue

Vol. 70, Iss. 3 — September 2004

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