Semiclassical evaluation of the two-photon cross–Kerr effect
Kazuki Koshino · Physical Review A · 2006
When two distinguishable photons are simultaneously input into a nonlinear system, the output photons undergo nonlinear optical effects of the cross--Kerr type. Theoretical quantification of this two-photon cross--Kerr effect requires, in principle, a fully quantum-mechanical analysis involving heavy computation. In this paper, we propose a method for evaluating the two-photon cross--Kerr effect using a semiclassical optical response theory. The semiclassical method enables precise evaluation of the cross--Kerr effect with greatly reduced computation. The validity of the method is confirmed using a model nonlinear system.