Direct observation of non-classical photon statistics in parametric downconversion

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.

References in corpus (1)

• Photon-number superselection and the entangled coherent-state representation

Cited by in corpus (2)

• Quantum entanglement of a large number of photons
• On the distribution of 1550-nm photon pairs efficiently generated using a periodically poled lithium niobate waveguide