How quantum cryptography works

My editor, Selena Frye called, asking what I knew about quantum cryptography. I remember muttering something about qubits. “Good,” she said. “This article discusses a problem that has been fixed, I’d like you to write about it?” 

“Sure, I’ll get right on it. I didn’t even know quantum cryptography was broken. And, they already have a fix.

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Story added 2. May 2012, content source with full text you can find at link above.