Raw code for "unbreakable" encryption, based on the principles of quantum physics, has been generated at record speed over optical fiber at the Commerce Department’s National Institute of Standards and Technology. The work, reported today at the SPIE Defense & Security Symposium in Orlando, Fla.,* is a step toward using conventional high-speed networks such as broadband Internet and local-area networks to transmit ultra-secure video for applications such as surveillance. . The link for this article located at Physorg.com is no longer available. . The link for this article located at Physorg.com is no longer available.. 'unbreakable', encryption, based, principles, quantum, physics, generate. . LinuxSecurity.com Team
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. According to the researchers, the work could accelerate the development of QKD for secure communications in optical fibers at distances far 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 existing optical fiber QKD systems, TESs detect photons by measuring minute temperature increases in a superconducting material caused by the absorption of individual photons. The link for this article located at SCMagazine is no longer available. . In research published recently in Applied Physics Letters, the team describes the use of new superco. alamos, national, laboratory, scientists, collaboration, researchers. . LinuxSecurity.com Team
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