The combination of quantum optics and integrated photonics gives the ability of manipulating, generating, and detecting various quantum states on single chips. One of the major challenge is the on-chip rejection of the pump which contaminate the quantum pair generated by non-linear process. We demonstrated the integration on a single silicon chip a photon-pair generator. The production simultaneously of multiplexed pairs with near-perfect quality was achieved using a ring resonator cavity and a cascaded multimode filter. This new type pump-rejection filter shows a large pump suppression (> 60dB) without any active tuning. All wavelengths are compatible with the ITU channels and with telecom components.
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