5.4 Gbps real time quantum random number generator with simple implementation

We present a random number generation scheme based on measuring the phase fluctuations of a laser with a simple experimental setup. A simple model is established to analyze the randomness and the simulation result based on this model fits well with the experiment data. After the analog to digital sampling and suitable randomness extraction integrated in the field programmable gate array, the final random bits are delivered to a PC, realizing a 5.4 Gbps real time quantum random number generation. The final random bit sequences have passed all the NIST and DIEHARD tests. (C) 2016 Optical Society of AmericaNational Natural Science Foundation of China (NSFC) [61501414, 61602045]; National Science Fund for Distinguished Young Scholars of China [61225003]; State Key Project of National Natural Science Foundation of China [61531003]SCI(E)ARTICLExbjpku@pku.edu.cn2427475-274812