Collaboration leads to advance towards quantum crypto

Friday, 23 July 2004, 2:41 PM EST

A joint research project of Fujitsu Ltd. and The University of Tokyo has made progress towards realizing a viable quantum cryptography system. Such a system allows parties to share encryption keys via telecommunication networks with full confidence that they have not been compromised en route.

The team has succeeded in generating and detecting a single photon at wavelengths useful for telecommunications, said Yasuhiko Arakawa, director of the Nanoelectronics Collaborative Research Center at The University of Tokyo and leader of the research project, in an interview on Tuesday.

The reliable generation and detection of single photons is vital if quantum cryptography systems are to leave the laboratory and enter practical use and the team has managed this through the development of a new photon generator.

By Martyn Williams at Info World.

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