2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96827Large number of multimode entangled states of light generated in down conversion processes belongs to a collection which is natural generalization of the W class. A brief overview of these states, schemes for their preparation, experimental implementations and possible applications are presented.14 pages, 3 figures, submitted to Laser Laser Physics Review, replaced with revised versionQuantum Physicstext