... quantum optics - different types of the light interference, . ... Another branch of my activity covers the problem of biphoton interference (1997-). ... Also we developed the effective interferometric protocols to generate some specific quantum states of light (the Bell states) in the most common case: broad spectrum of the pump (in particular for the femtosecond laser), any type of phase-matching (either type-I or type-II), and arbitrary length of nonlinear crystals. ... QUANTUM TELEPORTER . ...