光纤量子通信网络路由选择协议

摘要

A routing protocol is proposed for the fiber quantum communication network. Quantum communication network can be constructed based on the existing optical fiber communication network through using the repeater with entanglement swapping and entanglement purification. And based on the repeater, a practical quantum communication can be constructed with the use of nesting purification protocol. To the innate features of quantum communication network, a system of evaluation metrics on routing protocol of quantum communication network is presented and analyzed detailed. The consumption of the entanglement resources and the routing time for the best resulting fidelity within the building of quantum channel are key considered in the routing protocol, and the quantum communication channel can be chosen preferred from the process of these indicators analysis. The proposed routing protocol based on analytical calculation and optimization design is connected with the practical quantum communication system closely, and the simulation results show that the routing protocol can be operated well.%针对光纤量子通信网络,提出一种基于中继器的量子通信网络路由选择协议方案.在现有光纤通信网络的基础上利用基于纠缠交换和纠缠纯化的中继器来构建量子通信网络,然后在中继器的基础上采用嵌套纯化方案进行实际量子通信网络系统信道的建立.针对量子通信网络的特点,提出并分析了量子通信网络路由的评价指标,在路由选择协议方案中重点考虑量子信道建立过程中达到目标保真度值所需消耗的纠缠资源和路由建立时间,并从这些指标分析过程中择优选择量子通信信道.所提出的路由选择协议是基于解析计算及优化设计的,与实际量子通信系统相关联,仿真结果表明这种协议方案具有较强的可操作性.