Silicon Waveguide-based Single Photon Source with 12.4% High Off-chip Measured Heralding Efficiency

We designed and fabricated a silicon chip-based heralded single-photon source with 12.4% off-chip measured heralding efficiency. In addition, we achieve a coincidence-to-accidental ratio of 443.7 and heralded self-correlation function of 0.0037 measured at a pair rate of 313kHz. This demonstration of low noise and few multi-photon events at high pair rate is important for practical applications in quantum communication.