Welcome to the Quantum Internet

Quantum encryption is here, but the laws of physics can do much more than protect privacy

By Davide Castelvecchi, 14:36 PM August 1, 2008

A stylish new way of surfing the Internet is coming to Vienna this fall. Researchers plan to flip the switch on the next step toward a quantum version of the Internet. They will build a network allowing users to send each other messages as virtually unbreakable ciphers, with privacy protected by the laws of quantum physics.

The Vienna net is admittedly just a prototype for research purposes. It is also not yet a true quantum version of the Internet. Although it can transmit ordinary...

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