We report a fully-packaged, on-chip multi-photon-pair source using spontaneous-four-wave-mixing (SFWM) in silicon waveguide spirals. Our source consists of four, two-centimeter long spiral waveguides that are pumped in parallel using a pulsed laser source. We detected a four-fold coincidence rate of 180±20Hz, corresponding to an on-chip coincidence rate of 908±42Hz.
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Sundaram et al. (2024) studied this question.
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