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

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

2011-10-21

arxiv.org/abs/1110.4718v2

Optics Express (2011)

Physics

Quantum Physics

8 pages, 6 figures

Scientific paper

10.1364/OE.19.022698

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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