2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93063I present a simple and robust method of quantum state reconstruction using non-ideal detectors able to distinguish only between presence and absence of photons. Using the scheme, one is able to determine a value of Wigner function in any given point on the phase plane using expectation-maximization estimation technique.Quantum Physicstext