Direct observation of non-classical photon statistics in parametric downconversion
Edo Waks, Eleni Diamanti, Barry C. Sanders, Stephen D. Bartlett, Yoshihisa Yamamoto
Abstract
We employ a high quantum efficiency photon number counter to determine the photon number distribution of the output field from a parametric downconverter. The raw photocount data directly demonstrates that the source is nonclassical by forty standard deviations, and correcting for the quantum efficiency yields a direct observation of oscillations in the photon number distribution.
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