%0 Journal Article
%A Luis Aina, Alfredo
%A Rodil, Alfonso
%T Polarization versus photon spin
%D 2014
%@ 1094-4087
%U https://hdl.handle.net/20.500.14352/34649
%X 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.
%~