2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/166482We experimentally analyze the complete photon number statistics of parametric downconversion and ascertain the influence of multimode effects. Our results clearly reveal a difference between single mode theoretical description and the measured distributions. Further investigations assure the applicability of loss-tolerant photon number reconstruction and prove strict photon number correlation between signal and idler modes.5 pages, 3 figuresQuantum Physicstext