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February 25th, 2004

Simple optics make quantum relay

Researchers from the NASA-Caltech Jet Propulsion Laboratory have found a way to make a quantum repeater using ordinary optical equipment. Practical quantum repeaters could boost the reach of quantum cryptography systems, and eventually enable quantum networks. The device would allow for an exponential improvement in the distance quantum bits can be transmitted, said Jonathan Dowling, a principal scientist at at the Jet Propulsion Laboratory.


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