Slowing 80-ns light pulses by four-wave mixing in potassium vapor

Generation, control, storage and retrieval of complicated shaped four-wave mixing signal

“…Among the most well-known effects is electromagnetically induced transparency (EIT) [1,2], in which an opaque medium becomes eminently transparent for the probe field with the support of a control field. Diverse applications such as slowing and stopping of light [3][4][5], coherent storage and retrieval of light [6][7][8][9], Rydberg blockade-induced interactions [10], diffraction control and guiding of light [11,12], structured beam generation [13,14], etc have been documented using EIT. In a multi-level atomic system, EIT enhances the nonlinear susceptibility, which conducts us to use the nonlinear optical regime in the investigation of many nonlinear optical phenomena such as Kerr nonlinearity [15,16], self-phase modulation [17], cross-phase modulation [18,19], and fourwave mixing (FWM) [20][21][22][23].…”

Interference effect and Autler-Townes splitting in coherent blue light generated by four-wave mixing

“…Four-wave mixing (FWM) is a nonlinear process associated with many applications. In hot or roomtemperature atomic vapors, it has been used to generate quantum correlated beams [1,2], to store quantum memory and transfer orbital angular momentum between light beams [3,4], to reduce the paraxial diffraction of light [5], to generate slow light [6] and to obtain a single-photon source [7], for instance.…”