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Physical Review Letters

Polarization Correlation of the Two Photons Emitted by Metastable Atomic Deuterium: A Test of Bell's Inequality

Walter Perrie, Alan J. Duncan, H. J. Beyer, Hans Kleinpoppen

Published Jun 17, 1985• 111 citations
Publisher
DOI
10.1103/physrevlett.54.2647.3

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The polarization correlation of the two photons emitted simultaneously by metastable atomic deuterium in a true second-order decay process has been measured for the first time. The results are in agreement with quantum mechanics and violate Bell's inequality by nearly 2 standard deviations in an experiment where the process of absorption and reemission is not important.

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