2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/169602We present a generalized POVM formalism for the calculation of quantum optics networks of arbitrary complexity and apply it in a detailed analysis of the Franson-Bell experiment. Our analysis suggests that when it comes to observations of quantum processes, laboratory apparatus cannot always be used according to classical principles.Quantum Physicstext