Quantum key distribution based on Orbital Angular Momentum
Yuan Qian, Shengmei Zhao · 2010
How to improve the key distribution efficiency is key technique in quantum key distribution. An efficient quantum key distribution (QKD) protocol based on Orbital Angular Momentum (OAM) states in the d-dimension Hilbert space is presented in this paper. In the protocol, each photon carries log2d bits information, and the key distribution efficiency is improved greatly. In addition, the numerical simulation for this key distribution protocol are also given to show the availability of the protocol.