Summary
International Symposium on Nonlinear Theory and its Applications
2009
Session Number:B1L-C
Session:
Number:B1L-C4
Characteristics of robust random bit generation using fast chaotic semiconductor lasers
Kunihito Hirano, Kazuya Amano, Atsushi Uchida, Masaki Inoue, Sunao Naito, Shigeru Yoshimori, Kazuyuki Yoshimura, Peter Davis,
pp.-
Publication Date:2009/10/18
Online ISSN:2188-5079
Summary:
We generate physical random bit sequences at the fast rate of 1 gigabit per second using two chaotic semiconductor lasers with external cavities. The bit sequences pass statistical tests of randomness. Bit sequences generated by binary sampling of the intensity of two independent chaotic lasers are combined using Exclusive-OR to obtain a single random sequence. We investigate the dependence of randomness of generated bit sequences on laser parameters. It is shown that randomness can be robustly achieved if the external cavity frequencies for the two lasers and the sampling clock frequency avoid low order incommensurate ratios.