Bell correlations from previously entangled states of light

Based on the Bell theorem and the resulting interpretation of the violation of Bell inequalities by experimental data, it has been believed that a theoretical computation of Bell correlations requires explicit use of the entanglement formalism. Physically this implies a permanent superposition of light waves in spite of the physical separation that occurs in the course of their propagation to spatially separated detectors. Nevertheless, in the present model, Bell correlations are calculated using explicitly separated waves with photon occurrence probabilities given by wave intensities based on nonlinear optics and quantum electrodynamics. The non-locality implied in the conventional calculation is thereby eliminated, but interference effects between photon excited waves and vacuum waves are assumed, as specified to be necessary in the design of Bell-experiment sources.