Fast nondeterministic random-bit generation using on-chip chaos lasers

Takahisa Harayama*, Satoshi Sunada, Kazuyuki Yoshimura, Peter Davis, Ken Tsuzuki, Atsushi Uchida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)


It is shown that broadband chaos suitable for fast nondeterministic random-bit generation in small devices can be achieved in a semiconductor laser with a short external cavity. The design of the device is based on a theoretical model for nondeterministic random-bit generation by amplification of microscopic noise. Moreover, it is demonstrated that bit sequences passing common tests of statistical randomness at rates up to 2.08 Gbits/s can be generated using on-chip lasers with a monolithically integrated external cavity, amplifiers, and a photodetector.

Original languageEnglish
Article number031803
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
Publication statusPublished - 2011 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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