Direct Observation of Nonclassical Photon Statistics in Parametric Down-Conversion

Edo Waks, Eleni Diamanti, Barry C. Sanders, Stephen D. Bartlett, and Yoshihisa Yamamoto
Phys. Rev. Lett. 92, 113602 – Published 19 March 2004

Abstract

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.

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  • Received 22 July 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.113602

©2004 American Physical Society

Authors & Affiliations

Edo Waks1, Eleni Diamanti1, Barry C. Sanders1,2,3, Stephen D. Bartlett2, and Yoshihisa Yamamoto1,*

  • 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

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

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Vol. 92, Iss. 11 — 19 March 2004

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