Experimental six-state quantum cryptography
Paul G. Kwiat, Daphna G. Enzer, Phillip G. Hadley, Charles G. Peterson · Optical Fiber Communication Conference and International Conference on Quantum Information · 2001
Using polarization-entangled photons, we have implemented the “six-state” quantum cryptography protocol, whereby each photon is measured in one of three bases. The resulting eavesdropper-induced error rate, experimentally investigated for several attacks, is enhanced to 33%.