New Type of Einstein-Podolsky-Rosen-Bohm Experiment Using Pairs of Light Quanta Produced by Optical Parametric Down Conversion

Y. H. Shih and C. O. Alley
Phys. Rev. Lett. 61, 2921 – Published 26 December 1988
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Abstract

A pair of correlated light quanta of 532-nm wavelength with the same linear polarization but divergent directions of propagation was produced by nonlinear optical parametric down conversion. Each light quantum was converted to a definite polarization eigenstate and was reflected by a turning mirror to superpose with the other at a beam splitter. For coincident detection at separated detectors, polarization correlations of the Einstein-Podolsky-Rosen-Bohm type were observed. We also observed a violation of Bell's inequality by 3 standard deviations.

  • Received 23 May 1988

DOI:https://doi.org/10.1103/PhysRevLett.61.2921

©1988 American Physical Society

Authors & Affiliations

Y. H. Shih and C. O. Alley

  • Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742

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Issue

Vol. 61, Iss. 26 — 26 December 1988

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