High-efficient Quantum Key Agreement Protocol with Entanglement Measure.

We design a novel high-efficient quantum key agreement protocol with entanglement measure, whose security and high efficiency are guaranteed. In the proposed quantum key agreement protocol, we just utilize the Bell states and two-particle states as quantum resources, and just utilize Bell measurement and the classical binary coding to generate the final shared secret key. Which reduces the quantum sources and improves the efficiency of the proposed quantum key agreement protocol. Besides, we provide the security analyses of the proposed QKA protocol, including the robustness and the attacks of participants. Analyses demonstrate that the proposed QKA protocol with entanglement measure is robust and it can resist the most attacks. In addition, we compare our protocol with typical QKA protocols, and the results show that our protocol is high-efficient. Furthermore, the proposed novel QKA protocol with entanglement measure can be implemented with existing physical technologies. [ABSTRACT FROM AUTHOR]