Abstract

The three-photon interference effect is widely discussed in quantum optics. This term reflects the fact that frequency-angular intensity distribution (and/or distribution of coincidences) for spontaneous parametric down conversion (SPDC) depends strongly from phase delays in the modes of the pump (p), signal (s) and idler (i) [1]. For the three- photon Mach-Zehnder interferometer two nonlinear crystals with the length l are separated by linear dispersing medium l_i. In the linear medium all three photon get the additional phase delays. The delays are defined by the length I, and the refractive indexes for given frequency (ω_p. ω_s, ω_i). By the other words the dispersion low of linear medium ω(k) forms the output intensity distribution via delays in the modes p, s and i.

© 1998 IEEE