2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103254We report the first observation of the impact of mesoscopic fluctuations on the photocount statistics of coherent light scattered in a random medium. Poisson photocount distribution of the incident light widens and gains additional asymmetry upon transmission through a suspension of small dielectric spheres. The effect is only appreciable when the average number <n> of photocounts becomes comparable or larger than the effective dimensionless conductance g of the sample.Thoroughly revised text and figures, new data set, new figure addedDisordered Systems and Neural NetworksMesoscale and Nanoscale PhysicsOpticsQuantum Physicstext