SINGLE PHOTON EMISSION SYSTEM

The present disclosure provides a method of forming a single photon emission system and a single photon emission system. The method comprises providing a single photon source arranged for single photon emission at a predetermined wavelength in response to a suitable excitation. The single photon source comprises a particle for generating the single photons. The method also comprises providing an optical pump source arranged to provide the suitable excitation in the form of suitable photons. In addition, the method comprises adjusting a pathway of the photons provided by the optical pump source and a position of the single photon source relative to each other so that the single photon source is located at a predetermined location relative to the pathway of the photons provided by the optical pump source and in use single photons are emitted by the single photon source. Providing the single photon source comprises identifying the particle for generating the single photons at a location that is remote from the predetermined location.