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Research in Optical Sciences

Degenerate Correlated Photon-Pair Generation in an Ultra-Compact Silicon Photonic Crystal Waveguide

Jiakun He, Chunle Xiong, Matthew J. Collins, Juntao Li, Thomas F. Krauss, Alex S. Clark, Benjamin J. Eggleton

Published Jan 1, 2014• 0 citations
Publisher

Abstract

We demonstrate degenerate correlated photon-pair generation in a 96 μm long silicon photonic crystal waveguide via slow-light enhanced spontaneous four-wave mixing. This provides an ultra-compact platform for generating indistinguishable photons for future quantum technologies.
DOI
10.1364/qim.2014.qw4b.5

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We demonstrate degenerate, correlated photon-pair generation via slow-light-enhanced spontaneous four-wave mixing in a 96 μm long silicon photonic crystal waveguide. Our device represents a more than 50 times smaller footprint than silicon nanowires. We have achieved a coincidence-to-accidental ratio as high as 47 at a photon generation rate of 0.001 pairs per pulse and 14 at a photon generation rate of 0.023 pairs per pulse, which are both higher than the useful level of 10. This demonstration provides a path to generate indistinguishable photons in an ultracompact platform for future quantum photonic technologies.
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