Spectrally multiplexed indistinguishable single-photon generation at telecom-band

Heralded single photon source (HSPS) is an important way in generating genuine photon, having advantages of experimental simplicity and versatility. However, HSPS intrinsically suffers from the trade-off between heralded rate purity. To overcome this, one can apply multiplexing technology different degrees freedom to enhance performance HSPS. Here, by employing spectral active feed-forward manipulating, we demonstrate a at 1.5 {\mu}m telecom-band. Our results show that effectively erases frequency correlation pair significantly improves while keeping g{^(^2^)}(0) as low 0.0006{\pm}0.0001. The Hong-Ou-Mandel interference photons independent weak coherent indicates high indistinguishability. pave for scalable towards deterministic emission.