2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89340We use trajectory calculations to successfully explain two-photon "ghost" diffraction, a phenomenon previously explained via quantum mechanical entanglement. The diffraction patterns are accumulated one photon pair at a time. The calculations are based on initial correlation of the trajectories in the crystal source and a trajectory-wave ordering interaction with a variant generator inherent in its structure. Details are presented in comparison with ordinary diffraction calculated with the same trajectory model.10 pages, Revtex, 10 eps figures Submitted for PublicationQuantum Physicstext