Violation of Bell's Inequality over 4 km of Optical Fiber

P. R. Tapster, J. G. Rarity, and P. C. M. Owens
Phys. Rev. Lett. 73, 1923 – Published 3 October 1994
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Abstract

Using energy correlated photon pairs created in parametric down-conversion we demonstrate two-photon interference effects in fiber interferometers separated by 4.3 km of optical fiber. The measured 86% interference visibilities confirm the purely quantum mechanical origin of these correlations.

  • Received 7 March 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.1923

©1994 American Physical Society

Authors & Affiliations

P. R. Tapster, J. G. Rarity, and P. C. M. Owens

  • DRA Malvern, St. Andrews Road, Malvern, Worchester WR14 3PS, United Kingdom

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Issue

Vol. 73, Iss. 14 — 3 October 1994

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