Abstract:
A simple and efficient quantum key distribution protocol (called SEQDKD) is proposed. Based on the single polarization photon system, the protocol can efficiently realize the quantum key distribution. Meantime, it is more scientific that we use different efficiency calculation methods to measure the efficiency of different protocols. Compared with other common quantum key distribution protocols, our protocol is more efficient and easier to implement. More importantly, this protocol is theoretically proved to be secure against the intercept-resend attack.