QUANTUM NONLOCALITY AND INTERFERENCE IN FREQUENCY-DOMAIN

The experiment is proposed which should demonstrate that if the filter providing the spectral selection is placed in the route of one photon of the entangled pair produced by spontaneous down-conversion and the photon is detected behind it then the interference appears in the (di stant) Mach-Zehnder interferometer placed in the route of the other ph oton of the pair even if the optical path difference through the inter ferometer greatly exceeds the coherence length of the light and if the spectra of these two photons do not overlap. The theoretical analysis is carried out and physical interpretation is discussed.