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arXiv · 1110.4718

Reducing multi-photon rates in pulsed down-conversion by temporal multiplexing

Matthew A. Broome·Marcelo P. Almeida·Alessandro Fedrizzi·Andrew G. White
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Abstract

We present a simple technique to reduce the emission rate of higher-order photon events from pulsed spontaneous parametric down-conversion. The technique uses extra-cavity control over a mode locked ultrafast laser to simultaneously increase repetition rate and reduce the energy of each pulse from the pump beam. We apply our scheme to a photonic quantum gate, showing improvements in the non-classical interference visibility for 2-photon and 4-photon experiments, and in the quantum-gate fidelity and entangled state production in the 2-photon case.

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Matthew A. Broome, Marcelo P. Almeida, Alessandro Fedrizzi, Andrew G. White. 2012-02-21. Reducing multi-photon rates in pulsed down-conversion by temporal multiplexing. https://doi.org/10.1364/oe.19.022698

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