Russia has developed a new type of quantum transmitter

The scientific research team of the Moscow Institute of Physics and Technology in Russia has developed a new type of quantum transmitter that can emit billions of single quanta per second. It is used to build a future quantum communication network, which can make the network more secure. Related results were published in the scientific journal "npj Quantum Information".
The scientific research team chose silicon carbide as the quantum emission material because the material has the highest emission temperature. In fact, it was discovered that this material has electro-fluorescent properties, and technological research and development in this field began with the application of this material. The first wholesale photodiode developed in the 1920s was silicon carbide. It was only used in other materials since the 1980s.
The scientific research team conducted in-depth research on silicon carbide materials, and established a basic theory of silicon carbide electro-fluorescence properties, which can explain the radiation mechanism of silicon carbide as a quantum emitting material, accurately predict and repeat the test results. Through theories and experiments, the technical performance of silicon carbide as a quantum emission material has been improved. The quantum transmitter developed has technical and physical indicators that can emit billions of single quanta per second, which can ensure the transmission speed of G bits. In addition, the components developed with this material have the advantage of being compatible with the entire set of processes of “metal-oxide-semiconductor” materials in the microelectronics field, and have wider application prospects in the microelectronics field.
The use of quantum encryption technology can prevent information from being stolen. This is because the security of information is based on the quantum state being not destroyed. Once the information is stolen, the state of the information carrier, quantum, is destroyed. However, there is such a situation in quantum communication. If the line transmits several quanta in the same state at the same time, the thief can steal information from a part of the quanta without being discovered. Therefore, the development of single quantum emission technology becomes necessary.