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Los Alamos Successfully Employs Quantum Key Distribution
From: "Fergie" <fergdawg () netzero net>
Date: Tue, 21 Feb 2006 17:23:49 GMT
Pretty cool. [snip] A team of Los Alamos National Laboratory scientists, in collaboration with researchers from the National Institute of Standards and Technology in Boulder, Colo., and Albion College, in Albion, Mich., have achieved quantum key distribution (QKD) at telecommunications industry wavelengths in a 50-kilometer (31 mile) optical fiber. The work could accelerate the development of QKD for secure communications in optical fibers at distances beyond current technological limits. In research published recently in Applied Physics Letters, the team describes the use of new superconducting transition-edge sensors (TES) to distribute cryptographic key material at wavelengths of 1,550 nanometers through 50 kilometers of optical fiber. TES could provide increases in range and performance over current QKD photon detection schemes. Unlike the single-photon sensitive avalanche photodiodes (APD) that are typically used in optical fiber QKD systems, TESs detect photons by measuring minute temperature increases in a superconducting material caused by the absorption of individual photons. [snip] More: http://www.lanl.gov/news/index.php?fuseaction=home.story&story_id=7865 - ferg -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg () netzero net or fergdawg () sbcglobal net ferg's tech blog: http://fergdawg.blogspot.com/ _______________________________________________ Fun and Misc security discussion for OT posts. https://linuxbox.org/cgi-bin/mailman/listinfo/funsec Note: funsec is a public and open mailing list.
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