Hai-Zhi Song is a professor at the Southwest Institute of Technical Physics and the University of Electronic Science and Technology, China. He obtained his Ph.D. degree from Peking University in 1995 and has worked at Nanjing University, Catholic University Leuven, Tsukuba University, Fujitsu Lab. Ltd., and Tokyo University. His research interests are optoelectronics, nano-materials, and quantum information processing. His achievements include: preparing materials and devices for the silicon-based light emitter, quantum dot/well laser, and single-photon source/detector; inventing techniques to control the size and site of quantum dots; developing focal-plane single-photon detectors; designing a series of 2D metal-halides as potential optoelectronic and catalysis materials; and realizing quantum devices such as fiber-integrated photon-pair-entangler, heralded single photon emitter and fiber quantum memories.