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28 February 2012 Fast random-number generation using a diode laser's frequency noise characteristic
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Random numbers can be classified as either pseudo- or physical-random, in character. Pseudo-random numbers are generated by definite periodicity, so, their usefulness in cryptographic applications is somewhat limited. On the other hand, naturally-generated physical-random numbers have no calculable periodicity, thereby making them ideal for the task. Diode lasers' considerable wideband noise gives them tremendous capacity for generating physical-random numbers, at a high rate of speed. We measured a diode laser's output with a fast photo detector, and evaluated the binary-numbers from the diode laser's frequency noise characteristics. We then identified and evaluated the binary-number-line's statistical properties. We also investigate the possibility that much faster physical-random number parallel-generation is possible, using separate outputs of different optical-path length and character, which we refer to as "coherence collapse".
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroki Takamori, Kohei Doi, Shinya Maehara, Kohei Kawakami, Takashi Sato, Masashi Ohkawa, and Yasuo Ohdaira "Fast random-number generation using a diode laser's frequency noise characteristic", Proc. SPIE 8255, Physics and Simulation of Optoelectronic Devices XX, 825521 (28 February 2012);

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