Efficient frequency conversion of photons has important applications in optical quantum technology because the range suitable for photon manipulation and communication usually varies widely. Recently, an efficient system using a double-$\Lambda$ four-wave mixing (FWM) process based on electromagnetically induced transparency (EIT) attracted considerable attention its potential to achieve nearly...

In this paper I will briefly review some applications of nonlinear four-wave-mixing in optical fibers and silicon-nitride waveguides. This includes ultrafast all-optical waveform sampling ‘noiseless’ phase-sensitive amplification which have been demonstrated to enable signal recovery at very low powers.

Abstract Third-order non-linearities are important because they allow control over light pulses in ubiquitous high-quality centro-symmetric materials like silicon and silica. Degenerate four-wave mixing provides a direct measure of the third-order non-linear sheet susceptibility χ (3) L (where represents material thickness) as well technological possibilities such optically gated detection emis...