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Observation of tunable Popescu-Rohrlich correlations through postselection of a Gaussian state

D. S. Tasca, S. P. Walborn, F. Toscano, and P. H. Souto Ribeiro
Phys. Rev. A 80, 030101(R) – Published 14 September 2009

Abstract

We show that nonlocal Popescu-Rohrlich correlations can be observed in the postselected results of binned position measurements on a two-party Gaussian state. Our experiment is based on the spatial correlations of entangled photons and lens systems. We obtain a maximum violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality of 3.42, which corresponds to the implementation of a nonlocal AND gate with success probability of 0.93. These results do not conflict with quantum mechanics due to the postselection required and open up the possibility of experimental investigation of fundamental aspects of Popescu-Rohrlich nonlocality with a reliable and simple experimental setup.

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  • Received 19 March 2009

DOI:https://doi.org/10.1103/PhysRevA.80.030101

©2009 American Physical Society

Authors & Affiliations

D. S. Tasca*, S. P. Walborn, F. Toscano, and P. H. Souto Ribeiro

  • Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil

  • *tasca@if.ufrj.br

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Issue

Vol. 80, Iss. 3 — September 2009

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