Submission + - Quantum Cryptography Hacked
mrbluze writes: Nature reports on a eavesdropping technique developed by researchers at MIT for intercepting quantum-encrypted messages:
To listen in, the team used a quantum-mechanical principle known as entanglement, which can link together two different traits of a particle. Using an optical setup, the team was able to entangle the transmitted photon's polarization with its momentum. The eavesdropper could then measure the momentum in order to get information about the polarization, without affecting the original polarization.
This stuff is beyond me, but I can't wait to read Slashdot's explanation!
