Method for changing the polarisation of at least one photon of the photons which are radiated from a photon pair source to form various partial beam paths and a method for producing individual photons or photon pairs in an optical channel

摘要

The present invention is directed to a method for changing the polarization of at least one of the photons emitted from a photon pair source into various partial ray paths using an electro-optical modulator (EOM), which is positioned in the particular partial ray path being traversed by the photon to be influenced and which, in the activated state, is able to alter the polarization of a photon, the modulator being activated as a function of time such that the probability that the photon is found in the region of the electro-optical modulator in the activated state is at a maximum.