We propose what we believe to be a new approach to nondeterministic random-number generation. The randomness originated from the uncorrelated nature of consecutive laser pulses with Poissonian photon statistics and that of photon number detections is used to generate random bit, and the von Neumann correction method is used to extract the final random bit. This method is proved to be bias free in randomness generation, provided that the single photon detections are mutually independent. Further, it has the advantage in fast random bit generation, since no postprocessing is needed. A true random-number generator based on this method is realized, and its randomness is tested and guaranteed using three statistical test batteries.
© 2009 Optical Society of America
Original Manuscript: March 26, 2009
Revised Manuscript: May 6, 2009
Manuscript Accepted: May 7, 2009
Published: June 11, 2009
Wei Wei and Hong Guo, "Bias-free true random-number generator," Opt. Lett. 34, 1876-1878 (2009)