量子无线广域网构建与路由策略  

Quantum wireless wide-area networks and routing strategy

作　　者：刘晓慧[1,2] 聂敏[1] 裴昌幸[2] 

机构地区：[1]西安邮电大学通信与信息工程学院,西安710061 [2]西安电子科技大学,综合业务网理论及关键技术国家重点实验室,西安710071

出　　处：《物理学报》2013年第20期42-49,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61072067,61172071);国家重点实验室专项基金(批准号:ISN1001004);陕西省教育厅专项科研计划(批准号:2011JK1017)资助的课题~~

摘　　要：提出了一种基于多阶量子隐形传态的量子路由方案,在量子移动终端之间没有共享纠缠对的情况下,仍然可以完成量子态的无线传输.该量子路由方案可以用来构建量子无线广域网,其传输时延与所经过的链路距离和基站数目无关,传输一个量子态所需的时间与采用量子隐形传态所需的时间相同.因此,从数据传输速率的观点来看,该方案优于基于纠缠交换的量子路由方案.According to multistage quantum teleportation, we here propose a quantum routing scheme which teleports a quantum state from one quantum device to another wirelessly even though the two devices which do not share entangled photon pairs mutually. By the quantum routing scheme, the model of quantum wireless wide-area networks is presented. In terms of time complexity, the proposed scheme transports a quantum bit in the time almost the same as the quantum teleportation regardless of the number of hops between the source and destination node. From this point of view, the quantum routing scheme is close to optimal scheme in data transmission time. The correlative routing process is proposed under different conditions. The quantum state is transferred by multistage quantum teleportation, therefore, the information transfer between any two nodes in quantum wireless wide-area networks is realized.

关 键 词：量子通信 多阶量子隐形传态 量子路由 量子无线广域网 

分 类 号：O413[理学—理论物理] TN925[理学—物理]