Four-wave mixing (FWM) is a nonlinear optical phenomenon occurring in fibre-based Wavelength Division Multiplexing (WDM) systems, where the interaction among multiple channels produces additional ...
Quantum light generated through spontaneous four-wave mixing (SFWM) process in nonlinear materials, such as entangled photon pairs and single photons, is an important resource for various emerging ...
Unlike fictional laser swords, real laser beams do not interact with each other when they cross -- unless the beams meet within a suitable material allowing for nonlinear light-matter interaction. In ...