This week in Vienna, researchers demonstrated a working quantum key distribution (QKD) network, a feat that produced some good news and some bad news. The good news is that Siemens is probably going to be selling this stuff in a year or so; IT professionals, get ready to open your check books. On the other hand, by doing such a demo, the researchers show that QKD has passed from the realm of science into engineering, and they illustrate the weakness of fundamental scientific research in Europe.
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