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American Journal of Physics -- March 2006 -- Volume 74, Issue 3, pp. 180
Quantum mysteries tested: An experiment implementing Hardy’s test of local realism
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Add to FacebookWe have performed a test of local realism using entangled photons produced by spontaneous parametric downconversion. This experimental test is based on an idea originally proposed by Hardy for a test of local realism without inequalities, although our experiment actually measures an inequality (as any experiment must). We find a more-than-70 standard deviation violation of the predictions of local realism. The experimental effort required for this test is essentially the same as that required for a test of a Bell inequality. However, this test is based on concepts that are easier to understand and more compelling than those behind the original Bell inequality.
© 2006 American Association of Physics Teachers
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Received Jul 2005
Accepted Dec 2005
Accepted Dec 2005
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