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Phys. Rev. A 63, 020102(R) (2001) [4 pages]

Experimental observation of nonclassical effects on single-photon detection rates

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K. J. Resch, J. S. Lundeen, and A. M. Steinberg
Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7

Received 24 April 2000; published 11 January 2001

It is often asserted that quantum effects can be observed in coincidence detection rates or other correlations, but never in the rate of single-photon detection. We observe nonclassical interference in a singles rate, thanks to the intrinsic nonlinearity of photon counters. This is due to a dependence of the effective detection efficiency on the quantum statistics of the light beam. Such measurements of detector response to photon pairs promise to shed light on the microscopic aspects of silicon photodetectors, and on general issues of quantum measurement and decoherence.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.63.020102
DOI:
10.1103/PhysRevA.63.020102
PACS:
03.65.Ta, 03.67.-a, 85.60.Gz, 42.50.Dv