Optimisation of spontaneous four-wave mixing in a ring microcavity

А. А. Калачев, Mahmood Akbari

Ilya Chuprina, Pavel P. An, E Zubkova +3 more

A theory of spontaneous four-wave mixing in a ring microcavity is developed. The rate of emission of biphotons for pulsed and monochromatic pumping with allowance for the dispersion of group velocities is analytically calculated. In the first case, pulses in the form of an increasing exponential are considered, which are optimal for excitation of an individual resonator mode. The behaviour of the group velocity dispersion as a function of the width and height of the waveguide is studied for a specific case of a ring microcavity made of silicon nitride. The results of the numerical calculation are in good agreement with the experimental data. The ring microcavity is made of two types of waveguides: completely etched and half etched. It is found that the latter allow for better control over the parameters in the manufacturing process, making them more predictable.

Rakesh Ranjan Kumar, Ming Shiann Feng, Marina Raevskaia +3 more

We experimentally study spontaneous four wave mixing in micro-ring resonator on an InP membrane in a continuous regime. The generation rate of single photons from spontaneous four wave mixing is limited by the reduction in loaded Q-factor of the micro-ring resonators at higher power.

Qi-Tao Cao, Yun‐Feng Xiao

Asish Prosad, Rabindra Biswas, Srinivas Talabattula +1 more

We discuss the quantum mechanical modelling of spontaneous four wave mixing (SFWM) in dispersion engineered silicon nitride waveguide and ring resonator operating in the 700–800 nm wavelength range in the presence of realistic propagation losses. The photon pair generation rates from dispersion engineered ring-resonators are found to be enhanced by at least two-orders of magnitude when compared to the straight waveguides when excited with pump on-resonance.

Samuel Serna, Jérèmy Oden, Marc Hanna +6 more