Tuesday, November 08, 2005

New Quantum Cryptography Speed Record

This isn't a recent article (it was written in 2004) but it gives an idea of how while QC is only in its early stages, it is rapidly growing in technology.

Physicists from the National Institute of Standards and Technology (NIST) have established a world's speed record for 'unbreakable' encryption with their cryptographic system based on the transmission of single photons. With this kind of method, messages cannot be intercepted without detection, meaning transmission is always safe. The NIST "quantum key distribution" (QKD) system was used between two buildings located 730 meters apart for transmitting a stream of photons at a rate of 1 million bits per second. This might not look very fast, but it's 100 times faster than with previous quantum distribution systems.


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