Quantum Key Distribution Using Quantum Faraday Rotators
Choi, T, Choi, M S · CERN Document Server (European Organization for Nuclear Research) · 2006
We propose a new quantum key distribution (QKD) protocol based on the fully quantum mechanical states of the Faraday rotators. The protocol is unconditionally secure against eavesdropping for single-photon source on a noisy environment and robust against impersonation attacks. It also allows for unconditionally secure key distribution for multiphoton source up to two photons. The protocol could be implemented experimentally with the current spintronics technology on semiconductors.