Secure key distribution using correlated randomness in lasers driven by common random light

Kazuyuki Yoshimura, Jun Muramatsu, Peter Davis, Takahisa Harayama, Haruka Okumura, Shinichiro Morikatsu, Hiroki Aida, Atsushi Uchida

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66 Citations (Scopus)

Abstract

We propose a secure key distribution scheme based on correlated physical randomness in remote optical scramblers driven by common random light. The security of the scheme depends on the practical difficulty of completely observing random optical phenomena. We describe a particular realization using the synchronization of semiconductor lasers injected with common light of randomly varying phase. We experimentally demonstrate the feasibility of the scheme over a distance of 120km.

Original languageEnglish
Article number070602
JournalPhysical Review Letters
Volume108
Issue number7
DOIs
Publication statusPublished - 2012 Feb 14

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yoshimura, K., Muramatsu, J., Davis, P., Harayama, T., Okumura, H., Morikatsu, S., Aida, H., & Uchida, A. (2012). Secure key distribution using correlated randomness in lasers driven by common random light. Physical Review Letters, 108(7), [070602]. https://doi.org/10.1103/PhysRevLett.108.070602