Phys. Rev. Lett. 90, 227901 (2003) [4 pages]Secure Communication Using Mesoscopic Coherent StatesReceived 20 August 2002; published 2 June 2003 We demonstrate theoretically and experimentally that secure communication using intermediate-energy (mesoscopic) coherent states is possible. Our scheme is different from previous quantum cryptographic schemes in that a short secret key is explicitly used and in which quantum noise hides both the bit and the key. This encryption scheme allows optical amplification. New avenues are open to secure communications at high speeds in fiber-optic or free-space channels. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.227901
DOI:
10.1103/PhysRevLett.90.227901
PACS:
03.67.Dd, 42.50.Lc, 42.50.Ar
See AlsoReply: Horace Yuen, Eric Corndorf, Geraldo Barbosa, and Prem Kumar, Barbosa et al. Reply:, Phys. Rev. Lett. 94, 048902 (2005). Reply: Z. L. Yuan and A. J. Shields, Comment on “Secure Communication using Mesoscopic Coherent States”, Phys. Rev. Lett. 94, 048901 (2005). |
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