(Uo+UR)^2

If a photographic plate is exposed to the two beams, and then developed, its transmittance, T, is proportional to the light energy which was incident on the plate, and is given by

T=k(Uo+UR)^2

where k is a constant. When the developed plate is illuminated by the reference beam, the light transmitted through the plate, UH is

UH=T*UR

It can be seen that UH has four terms. The first of these is proportional to UO, and this is the re-constructed object beam. The second term represents the reference beam whose amplitude has been modified by UR^2. The third also represents the reference beam which has had its amplitude modified by UO^2; this modification will cause the reference beam to be diffracted around its central direction. The fourth term is known as the "conjugate object beam." It has the reverse curvature to the object beam itself, and forms a real image of the object in the space beyond the holographic plate.

http://en.wikipedia.org/wiki/Holography

This mathematical model needs a medium which is a fundamental information for this model. There is electric field above.

My question is :

Might be that the fundamental information is also a virtual particle-antiparticle ?