2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/88985We present a new derivation of the unpolarized quantum states of light, whose general form was first derived by Prakash and Chandra [Phys. Rev. A 4, 796 (1971)]. Our derivation makes use of some basic group theory, is straightforward, and offers some new insights.3 pages, REVTeX, presented at ICQO'2000Quantum Physicstext