SINGLE-PHOTON RADIATION SOURCE Russian patent published in 2021 - IPC H01L33/06 B82Y20/00 H04B10/85 C30B25/02 

FIELD: optical communication systems.

SUBSTANCE: invention relates to the field of optical communication systems, namely, to truly single-photon sources of optical radiation and can be used to create highly secure information transmission systems based on the principle of quantum cryptography and the implementation of the quantum key distribution protocol (QKD) through existing fiber-optic networks. A single-photon radiation source contains an optical pumping channel, a luminescence channel, a receiving channel, and a dichroic mirror. A source of exciting radiation is located in the optical pumping channel. The luminescence channel contains a diamond-based single photon generation element, an M magnification system, and a scanning system. The dichroic mirror provides the possibility of directing the exciting radiation into the luminescence channel, and the generated photons - into the receiving channel. The lasing element is made in the form of a diamond single crystal with luminescence growth centers of concentration N. Confocal modules with point diaphragms are installed in the optical pumping channel and the receiving channel. The radius (R) of the point diaphragms is

EFFECT: opportunity to expand the range of diamond material, on the basis of which the generation element can be made, and, as a consequence, to simplify the manufacture of a single-photon radiation source.

7 cl, 1 dwg