Quantum Algorithms
Saturday, March 13, 2004
Quantum Crypto Reaches 150 km
optics.org, News: "NEC’s record-breaking system relies on planar lightwave circuit (PLC) technology and a low-noise photon receiver....The system’s second plus-point is an alleged ten-fold increase in signal-to-noise ratio compared with current systems. This is largely thanks to the receiver’s increased sensitivity to photons that have been broadened by dispersion in the long fiber-optic link."
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