2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89096An operational arrival-time distribution is defined as the distribution of detection times of the first photons emitted by two level atoms in resonance with a perpendicular laser beam in a time of flight experiment. For ultracold Cesium atoms the simulations are in excellent agreement with the theoretical ideal time-of-arrival distribution of Kijowski.Quantum PhysicsModel for the arrival-time distribution in fluorescence time-of-flight experimentstext