Slashdot writes:

NetworkWorld is running an article that describes how a University of Melbourne research group is developing technology to make fiber optics communications more secure. The technology is based on Quantum Cryptography principles and requires than absolutely only one photon gets sent at any given time. Today, fiber optic systems do not send one photon at a time. They only approximate it. This makes current systems unsuitable for their secure communications technology. Therefore, the group uses artificially grown diamonds to achieve this.

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