Sun Yuan-Yuan, Li Pu, Guo Yan-Qiang, Guo Xiao-Min, Liu Xiang-Lian, Zhang Jian-Guo, Sang Lu-Xiao, Wang Yun-Cai. Chaotic laser-based ultrafast multi-bit physical random number generation without post-processJ. Acta Physica Sinica, 2017, 66(3): 030503. DOI: 10.7498/aps.66.030503