High intensity generation of entangled photons in a two-mode   electromagnetic field
  At present, the sources of entangled photons have a low rate of photon generation. This limitation is a key component of quantum informatics for the realization of such functions as linear quantum computation and quantum teleportation. In this paper, we propose a method for high intensity generation of entangled photons in a two-mode electromagnetic field. On the basis of exact solutions of the Schr{\"o}dinger equation, in the conditions of interaction of the electrons in an atom with a strong two-mode electromagnetic field, it is shown that there may be large quantum entanglement between photons. The quantum entanglement is analyzed on the basis of the Schmidt parameter. It is shown that the Schmidt parameter can reach very high values depending on the choice of characteristics of the two-mode fields. We find the Wigner function for the considered case. Violation of Bell's inequalities for continuous variables is demonstrated. 
D. N. Makarov
physics.optics quant-ph