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Photons Can Still Torpedo Quantum Hackers Friday, December 03, 2010 - Anuradha Menon Home >> Headlines >> Physics   
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In quantum cryptography, the digital codes used to scramble secret documents, pictures and video - encryption keys - are are encoded in photons transmitted through an optical fibre. To ensure that no attacker intercepts the key during transmission, the polarisation angle of these photons is known. The security comes from the fact that, by the spooky laws of quantum mechanics, any attempt to intercept those photons changes this quantum property. (source: newscientist.com)
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