Abstract
In this talk, I will discuss two applications of nonlinear quantum photonics in silicon nanowires: correlated photon pair sources and a single-photon wavelength converter. Correlated photon pairs can be generated in a nonlinear silicon waveguide through the spontaneous four-wave mixing (SFWM) process shown in Fig. 1(a), where two photons from a bright pump laser are annihilated, and a two photons are spontaneously created at different wavelengths (the signal and idler) [1]. However, indistinguishable photon pairs are of particular interest for two-photon interference experiments, meaning that the signal and idler should have the same wavelength and be entirely identical to each other. Indistinguishable pairs can be generated with the SFWM process shown in Fig. 1(b), where two pump lasers create a degenerate signal and idler at the frequency mid-way between them.
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