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Code System Employs Laser Pulses

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Daniel S. Burgess

A team of researchers at Centre National de la Recherche Scientifique (CNRS) in Orsay, France, and at Université Libre de Bruxelles in Brussels, Belgium, has demonstrated a quantum cryptography system that encodes its information on the electric field of weak laser pulses. The new method promises high transmission rates and technical simplicity. Using laser pulses offers significant advantages over existing techniques that employ single photons. "We don't have to produce and detect single photons, which is the main technological limita-tion of photon-counting quantum key distribution,"...Read full article

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    Published: March 2003
    Communicationselectric field of weak laser pulsesquantum cryptography systemResearch & TechnologySensors & Detectors

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