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Experimental Test of Bell's Inequalities Using Time-Varying Analyzers

Alain Aspect, Jean Dalibard, and Gérard Roger
Phys. Rev. Lett. 49, 1804 – Published 20 December 1982
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Abstract

Correlations of linear polarizations of pairs of photons have been measured with time-varying analyzers. The analyzer in each leg of the apparatus is an acousto-optical switch followed by two linear polarizers. The switches operate at incommensurate frequencies near 50 MHz. Each analyzer amounts to a polarizer which jumps between two orientations in a time short compared with the photon transit time. The results are in good agreement with quantum mechanical predictions but violate Bell's inequalities by 5 standard deviations.

  • Received 27 September 1982

DOI:https://doi.org/10.1103/PhysRevLett.49.1804

©1982 American Physical Society

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The Physical Review Journals Celebrate The International Year of Light

The editors of the Physical Review journals revisit papers that represent important breakthroughs in the field of optics.

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2008 marked PRL’s 50th anniversary. As part of the celebrations a collection of milestone Letters was started. The collection contains Letters that have made long-lived contributions to physics, either by announcing significant discoveries, or by initiating new areas of research.

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Authors & Affiliations

Alain Aspect, Jean Dalibard*, and Gérard Roger

  • Institut d'Optique Théorique et Appliquée, F-91406 Orsay Cédex, France

  • *Permanent address: Laboratoire de Physique de l'Ecole Normale Supérieure, F-75231 Paris Cédex 05, France.

Comments & Replies

Rotational Invariance, Locality, and Einstein-Podolsky-Rosen Experiments

A. O. Barut and P. Meystre
Phys. Rev. Lett. 53, 1021 (1984)

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Issue

Vol. 49, Iss. 25 — 20 December 1982

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