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无线量子通信是未来量子通信系统的重要组成部分,而量子纠缠中继则是无线量子通信的关键技术之一。然而,由于在无线信道上存在各种干扰和噪声,使得量子纠缠态远程传送的实现正面临很大的困难,为此,本文提出了基于移动终端和移动基站的两种量子纠缠中继方案,建立了量子无线通信网络的分层结构,给出了量子纠缠态无线传输的路由协议(RQCP)。分析结果表明,即使在量子通信终端之间没有共享EPR纠缠对的情况下,本模型同样可以完成量子态的无线传输,并且其传输时延与链路的无线跳数无关。因此,从传输时延的观点来看,该中继方案和协议是最优的。
Wireless quantum communication is an important part of the future quantum communication system, and quantum entanglement relay is one of the key technologies of wireless quantum communication. However, due to the existence of various interference and noise on the wireless channel, the realization of quantum entanglement teleportation is facing great difficulties. Therefore, two quantum entanglement relay schemes based on mobile terminal and mobile base station are proposed in this paper. The hierarchical structure of quantum wireless communication network is established and the routing protocol (RQCP) for quantum entangled state wireless transmission is given. The analysis results show that the proposed model can perform wireless transmission in quantum state even if there is no EPR entanglement between quantum communication terminals, and its transmission delay is independent of the number of wireless hops of the link. Therefore, the relay scheme and protocol are optimal from the viewpoint of transmission delay.