Quantum Light Source from Semiconductors J.Semicond.2019,Vol.40,Issue 7Guest Edited by Xiulai Xu (Institute of Physics,Chinese Academy of Sciences,Beijing,China)Jin-Shi Xu (University of Science and Technology of China,Hefei,China)Quantum light sources have important applications in modern quantum information processing,such as quantum communication,quantum metrology and quantum computation.Many kinds of methods have been developed to generate quantum light sources.Semiconductors are of particular appealing materials.