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APS » Journals » Phys. Rev. Lett. » Volume 49 » Issue 25
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Phys. Rev. Lett. 49, 1804–1807 (1982)

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

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Alain Aspect, Jean Dalibard*, and Gérard Roger
Institut d'Optique Théorique et Appliquée, F-91406 Orsay Cédex, France

Received 27 September 1982; published in the issue dated 20 December 1982

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.

© 1982 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.49.1804
DOI:
10.1103/PhysRevLett.49.1804
PACS:
03.65.Bz, 35.80.+s

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

See Also

Comment: A. O. Barut and P. Meystre, Rotational Invariance, Locality, and Einstein-Podolsky-Rosen Experiments, Phys. Rev. Lett. 53, 1021 (1984).

 
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