Phys. Rev. Lett. 92, 113602 (2004) [4 pages]

Direct Observation of Nonclassical Photon Statistics in Parametric Down-Conversion

Abstract

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Edo Waks¹, Eleni Diamanti¹, Barry C. Sanders^1,2,3, Stephen D. Bartlett², and Yoshihisa Yamamoto^1,*
¹Quantum Entanglement Project, ICORP, JST, E. L. Ginzton Laboratories, Stanford University, Stanford, California 94305, USA
²Department of Physics, Macquarie University, Sydney, New South Wales 2109, Australia
³Department of Physics and Astronomy, University of Calgary, Alberta, Canada T2N 1N4

Received 22 July 2003; published 19 March 2004

We employ a high quantum efficiency photon number counter to determine the photon number distribution of the output field from a parametric down-converter. The raw photocount data directly demonstrates that the source is nonclassical by 40 standard deviations, and correcting for the quantum efficiency yields a direct observation of oscillations in the photon number distribution.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.92.113602

DOI:

10.1103/PhysRevLett.92.113602

PACS:

42.50.Ar, 42.50.Dv

^*Also at NTT Basic Research Laboratories, Atsugi, Kanagawa, Japan.

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Phys. Rev. Lett. 92, 113602 (2004) [4 pages]

Direct Observation of Nonclassical Photon Statistics in Parametric Down-Conversion