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Bulletin of the American Physical Society

Correlated Photon-Pair Generation Based on Spontaneous Four-Wave Mixing in Open {\&} Closed Ladder-Type Atomic System

Jiho Park, Han Seb Moon

Published Jun 6, 2017• 0 citations
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We demonstrate a source of correlated photon pairs which will have applications in future integrated quantum photonic circuits. The source utilizes spontaneous four-wave mixing (SFWM) in a dispersion-engineered nanowaveguide made of AlGaAs, which has merits of negligible two-photon absorption and low spontaneous Raman scattering (SpRS). We observe a coincidence-to-accidental (CAR) ratio up to 177, mainly limited by propagation losses. Experimental results agree well with theoretical predictions of the SFWM photon pair generation and the SpRS noise photon generation. We also study the effects from the SpRS, propagation losses, and waveguide lengths on the quality of our source.