Quantum Cryptography on Noisy Channels: Quantum versus Classical Key-Agreement Protocols
Quantum Cryptography on Noisy Channels: Quantum versus Classical Key-Agreement Protocols
When the 4-state or the 6-state protocol of quantum cryptography is carried out on a noisy quantum channel, then the raw key has to be processed to reduce the information of a spy down to an arbitrarily low value, providing Alice and Bob with a secret key. In principle, quantum …