Open AccessTb/s physical random bit generation with bandwidth-enhanced chaos in three-cascaded semiconductor lasers
Author(s) -
Ryohsuke Sakuraba,
Kento Iwakawa,
Kazutaka Kanno,
Atsushi Uchida
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.001470
Subject(s) - random number generation , randomness , bandwidth (computing) , bit error rate , nist , semiconductor laser theory , optics , computer science , electronic engineering , physics , laser , algorithm , mathematics , telecommunications , statistics , decoding methods , natural language processing , engineering
We experimentally demonstrate fast physical random bit generation from bandwidth-enhanced chaos by using three-cascaded semiconductor lasers. The bandwidth-enhanced chaos is obtained with the standard bandwidth of 35.2 GHz, the effective bandwidth of 26.0 GHz and the flatness of 5.6 dB, whose waveform is used for random bit generation. Two schemes of single-bit and multi-bit extraction methods for random bit generation are carried out to evaluate the entropy rate and the maximum random bit generation rate. For single-bit generation, the generation rate at 20 Gb/s is obtained for physical random bit sequences. For multi-bit generation, the maximum generation rate at 1.2 Tb/s ( = 100 GS/s × 6 bits × 2 data) is equivalently achieved for physical random bit sequences whose randomness is verified by using both NIST Special Publication 800-22 and TestU01.