Deter quantum hackers by hiding the photon keys

时间:2017-09-07 07:01:01166网络整理admin

By Kate McAlpine SPOTTING a lone messenger in a crowd of decoys is tricky – a concept that might make it possible to improve the security of quantum cryptography. Quantum links are said to be unhackable because the “key” used to establish a secure channel is encoded into the spin of a photon. If the photon is intercepted, it becomes altered in a detectable way. However, hackers have discovered loopholes that allow them to escape detection, for instance,