For The First Time in The World, Chinese Chips Have Made Another Breakthrough!

According to Sichuan Daily, the research team of the Information and Quantum Laboratory of the University of Electronic Science and Technology of China in Chengdu cooperated with Tsinghua University and the Shanghai Institute of Microsystems and Information Technology of the Chinese Academy of Sciences to develop a gallium nitride quantum light source chip for the first time in the world. This is the first time the University of Electronic Science and Technology of China has Another important progress has been made by the "Ginkgo No. 1" metropolitan quantum Internet research platform.

At present, quantum light source chips are mostly developed using materials such as silicon nitride. In contrast, gallium nitride quantum light source chips have made breakthroughs in key indicators such as output wavelength range. The output wavelength range has increased from 25.6 nanometers to 100 nanometers, and can Towards monolithic integration.

According to reports, the research team used iterative electron beam exposure and dry etching processes to overcome technical problems such as high-quality gallium nitride crystal film growth, waveguide sidewall and surface scattering losses, and applied gallium nitride materials to quantum applications for the first time in the world. Light source chip.

The quantum light source chip is the core device of the quantum Internet. It can be regarded as a "quantum light bulb" that lights up the "quantum room", allowing Internet users to have the ability to interact with quantum information.

According to Zhou Qiang, a professor at the Institute of Basic and Frontier Research at the University of Electronic Science and Technology of China and director of the Quantum Internet Frontier Research Center of Tianfu Jiangxi Laboratory, by providing more wavelength resources for the construction of the quantum Internet, more users can use different wavelengths to access the quantum Internet network. needs. This means that "quantum light bulbs" can light up more rooms.