PENG Chengzhi,born in Oct.1976, is a senior scientist at the University of Science and Technology of China where he got his BSc. In 1998 and PhD.(applied physics) in 2005. Dr. Peng worked as an assistant professor in the Department of Physics of the Tsinghua University after graduation. Since 2009 Dr. Peng has been working at the Hefei National Laboratory for Physical Sciences at the Microscale as a senior scientist. His research focuses on decoy-state Quantum Key Distribution and Quantum Communication based on Entanglement. His publications include those in Nature, PNAS, Phys. Rev. Lett. And other major international journals.