University of Science and Technology of China to complete a new study for the first time in the graphene single atomic layer semiconductor material found in non-classical single-photon emission, opening up a new path to the new light quantum devices. Since 2004, scientists have successfully prepared graphene (ie, monatomic layer carbon), the physical connotation and excellent properties of the material lead to the outside world on the basic and applied research craze. However, the electronic structure of graphene does not have a bandgap, which limits its application in optoelectronic devices. However, the new type of graphene-like graphene material "monatomic layer transition metal sulfide" has drawn attention for its unique photoelectric properties. It is only that all previous research on single-atom two-dimensional material in the world has focused on the field of classical optics. Quantum optical phenomena such as photon anti-bunching have not been observed experimentally. Pan Jianwei and Lu Chaoyang, University of Science and Technology of China, and Xu Xiaodong of the University of Washington and Yao Wang of the University of Hong Kong have found that atomic defects in the 2D monolayers of WSe2 can bind excitons and become non-classical single-photon emission "Compared with other single-photon systems, this single-atom layer-based single-photon device not only facilitates photon reading and control, but also conveniently integrates with other optoelectronic device platforms." This research means that an efficient optical quantum information processing circuit can be realized. The theory also shows that by controlling the electric field, scientists can realize the quantum control of the single-electron spin-valley coupling degree of freedom, which will be applied to the study of tolerable quantum computation in the future. In fact, the promising field of quantum control based on single atomic layer has become the focus of international competition. Pan Jianwei team's research results released on the 5th online "natural nanotechnology", France Strong Magnetic Field National Laboratory and other three European and American independent research team also have similar research results, but later than the Chinese team submission. It is worth mentioning that Pan Jianwei team has made a number of achievements in the systematic research of scalable optical quantum information processing technology, including the first realization of single atomic layer semiconductor quantum devices in the world and the realization of quantum artificial intelligence algorithm experiments. In the field of optical quantum information Maintain the international leading position. Rolling Mill,Cold Rolling Mill,Metal Rolling Mill,Reversing Mill Wuxi Wushi Machinery Factory , https://www.cnrollmill.com