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International Conference on Transparent Optical Networks

Pair Photon Sources from Micro-Structured Fibres

Jérémie Fulconis, Olivier Alibart, John Rarity, W. J. Wadsworth

Published Jun 1, 2006• 0 citations
Publisher

Abstract

We have developed an ultra-bright pair-photon source using four wave mixing in micro-structured fibres. This source can serve as a new universal source for quantum information experiments. Using photon pairs created by four-wave mixing, we demonstrate non-classical interference between two separated sources and preliminary evidence for entangled photon pair generation both with high counting rate

DOI
10.1109/icton.2006.248314

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We have developed a source of time-correlated photon pairs based on phase matched four-wave mixing in a photonic crystal fiber designed to have a zero dispersion wavelength, lambda0, close to 715nm. We generate parametric gain by pumping close to lambda0in the normal dispersion regime. By pumping with a pulsed titanium-sapphire (TI-SA) laser tuned to 708 nm we generate pair-photons at 583 nm and 900 nm visible to efficient silicon- based photon counting detectors. We can generate >100000 detected pairs per second (in a single spatial and temoral mode) with a few milli-watts of pump power. Using this source we have been able to show high visibility multi-photon interference, by mixing at a 50:50 beam-splitter, two heralded single photons generated in spatially separated micro-structured fibres. The source brightness meant we were able to measure high rates of four- photon generation and detection.