This example demonstrates how to model the quantum state produced by spontaneous four-wave mixing (SFWM) in a microring resonator based on parameters that can be extracted from classical waveguide analysis. The photon pair generation rate and biphoton wavefunction are calculated for degenerate SFWM in a silicon nitride microring resonator with a non-zero 3rd order nonlinear electric susceptibility, where two pump photons are converted to pairs of signal and idler photons such that energy conservation and phase matching conditions are satisfied [1,2]. We consider a waveguide geometry such that group velocity dispersion is minimal, and consequently only work with a linearized dispersion model [1].
Read the full article here: https://optics.ansys.com/hc/en-us/articles/15100783091731