Statistics of multiphoton events in spontaneous parametric down-conversion

Details Statistics of multiphoton events in spontaneous parametric down-conversion Statistics of multiphoton events in spontaneous parametric down-conversion

2008-05-12

arxiv.org/abs/0805.1701v1

Phys. Rev. A 78, 033831 (2008)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.78.033831

We present an experimental characterization of the statistics of multiple photon pairs produced by spontaneous parametric down-conversion realized in a nonlinear medium pumped by high-energy ultrashort pulses from a regenerative amplifier. The photon number resolved measurement has been implemented with the help of a fiber loop detector. We introduce an effective theoretical description of the observed statistics based on parameters that can be assigned direct physical nterpretation. These parameters, determined for our source from the collected experimental data, characterize the usefulness of down-conversion sources in multiphoton interference schemes that underlie protocols for quantum information processing and communication.

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