Luis Aina, AlfredoRodil, Alfonso2023-06-192023-06-192014-01-271094-408710.1364/OE.22.001569https://hdl.handle.net/20.500.14352/34649© 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.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.engjournal articlehttp://dx.doi.org/10.1364/OE.22.001569http://www.osapublishing.orgopen access535StatesÓptica (Física)2209.19 Óptica Física