2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90947An oscillatory correlation function has been observed by the coincidence counting of multimode two-photon pairs produced with a degenerate optical parametric oscillator far below threshold. The coherent superposition of the multimode two-photon pairs provides the oscillation in the intensity correlation function. The experimental data are well fitted to a theoretical curve.4 pages, 2 figuresQuantum Physicstext