RT Journal Article T1 Polarization versus photon spin A1 Luis Aina, Alfredo A1 Rodil, Alfonso AB We examine whether the Stokes parameters of a two-mode electromagnetic field results from the superposition of the spins of the photons it contains. To this end we express any n-photon state as the result of the action on the vacuum of n creation operators generating photons which can have may different polarization states in general. We find that the macroscopic polarization holds as sum of the single-photon Stokes parameters only for the SU(2) orbits of photon-number states. The states that lack this property are entangled in every basis of independent field modes, so this is a class of entanglement beyond the reach of SU(2) transformations. PB The Optical Society of America SN 1094-4087 YR 2014 FD 2014-01-27 LK https://hdl.handle.net/20.500.14352/34649 UL https://hdl.handle.net/20.500.14352/34649 LA eng NO © 2014 Optical Society of America. A. L. acknowledges support from projects FIS2012-35583 of the Spanish Ministerio de Economia y Competitividad and QUITEMAD S2009-ESP-1594 of the Consejeria de Educacion de la Comunidad de Madrid. NO Ministerio de Economía y Competitividad (MINECO), España NO Consejería de Educación de la Comunidad de Madrid DS Docta Complutense RD 22 dic 2025