In this paper the coherence and crossing symmetry of the electromagnetic interaction of photons involved in the spontaneous parametric down conversion (SPDC) phenomena in nonlinear crystals, are investigated. On this basis a new interpretation of the recent results on the two photon entangled experiment is obtained. A new field of applications is suggested.
@article{arxiv.0810.3986,
title = {A New Interpretation of Two-Photon Entangled Experiments via Quantum Mirrors},
author = {D. B. Ion and P. Constantin and M. L. Ion},
journal= {arXiv preprint arXiv:0810.3986},
year = {2008}
}