Pan Jianwei and Lu Chaoyang, professors at the University of Science and Technology of China in East China's Anhui province, in collaboration with researchers from the Shanghai Institute of Microsystems and Information Technology, CAS, have created a light-based quantum computer called Jiuzhang. 

The machine enabled China to reach its first milestone in quantum computing research that can demonstrate quantum supremacy, or quantum advantage, meaning the device can solve a problem no traditional supercomputer can tackle in any feasible amount of time.