Main Question or Discussion Point
As I understand it, photons are their own anti-particle, and at all points in space there are a lot of virtual particle-antiparticle pairs being created and annhilated (perhaps infinite?), so it would seem to me that on it's journey from point A to point B that there is at least some likeliehood that a photon might meet one of the virtual photons of the same wavelength, having been just created in a virtual phton-pair, and anhilate itself, freeing the virtual photon that was created in the 'pair' to become 'real' and no longer virtual, hellbent on it's own destruction. If I am wrong please correct me. But if this is the case, what is the probability of this occuring over a given distance in the travel of a photon, and will the virtual photon that is set free by this continue the original path and have the same polarization, etc., of the photon that interfered with the 'virtual pair'?