Efficient physical random bit generation with lasers

Takahisa Harayama*, Atsushi Uchida, Kazuyuki Yoshimura, Peter Davis

*この研究の対応する著者

研究成果: Conference contribution

抄録

We discuss the role of physical fluctuations in physical random bit generators focusing on the practical limits of generation rates. First we present a brief review of existing random bit generators, their mechanisms and performance characteristics. Then we discuss in detail random bit generation by chaotic lasers. It has recently been shown that bit sequences which passed statistical tests of randomness could be generated at fast rates up to 1.7 Gbps using chaotic semiconductor lasers. This is faster than any previous report of physical random sequence generation passing the same tests. In this paper it was reported that the chaotic state of the lasers gave better performance than the steady state noise. We show that one reason for the relatively good performance of the chaotic state versus the steady state is due to the drift of the threshold in the analog-to-digital converting (AD) device. Accordingly, we conclude that it is possible to generate random bit sequences by the steady state in the following alternative ways: (a) introducing another stage of broadband amplifier to amplify the steady state noise, (b) improving the stability of the threshold of the AD device by an order of magnitude. These results show that the chaotic laser is an efficient and robust mechanism for use in physical random bit generation in the sense that it did not require either (a) or (b). Moreover, the relative efficiency can be measured as the minimum amplification required to meet the randomness criteria, and the robustness can be measured as the maximum threshold variation which can be tolerated.

本文言語English
ホスト出版物のタイトルICTON 2009
ホスト出版物のサブタイトル11th International Conference on Transparent Optical Networks
DOI
出版ステータスPublished - 2009 11月 18
外部発表はい
イベントICTON 2009: 11th International Conference on Transparent Optical Networks - Ponta Delgada, Portugal
継続期間: 2009 6月 282009 7月 2

出版物シリーズ

名前ICTON 2009: 11th International Conference on Transparent Optical Networks

Other

OtherICTON 2009: 11th International Conference on Transparent Optical Networks
国/地域Portugal
CityPonta Delgada
Period09/6/2809/7/2

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料

フィンガープリント

「Efficient physical random bit generation with lasers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル