提出一种以纠缠交换作为核心技术的远程量子链路建立策略,建立了基于链路状态矩阵的量子链路模型并分析了纠缠交换的实现和矩阵表示。提出了链路协议栈以及端到端的建立策略,分析了矩阵控制下的纠缠交换和纠缠纯化流程,计算得出了在基于自动重传请求( ARQ )协议经典信息辅助下的链路时延和吞吐量与节点数、误帧率、平均距离、操作成功率之间的定量关系。仿真结果表明：处于同一状态区间内的链路性能随节点数呈现出较为一致和平缓的变化；不同区间内的链路性能差异较为显著,在节点平均距离为1 km、经典信息误帧率为0、纠缠保真度为0.98的情况下,当节点数分别为32、33和34时,链路时延分别为1.0770 ms、1.0903 ms和1.6690 ms,链路吞吐量分别为0.9285 kb/s、0.9172 kb/s和0.5992 kb/s。%A remote quantum link establishment strategy which uses entanglement swapping as the core tech-nology is proposed. The model of quantum link based on state matrix is established and its entanglement swapping implementation and its matrix representation are analyzed. The process of entanglement swapping and entanglement purification under control of the matrix is also discussed. With classical auxiliary informa-tion based on automatic repeat request ( ARQ ) protocol, the quantitative relationship between link delay ( throughput) and node number,frame error rate,average distance,operation success rate is calculated. Sim-ulation results show that the performance of links in the same state interval varies consistently and gradually while links in different ranges behave very differently. Setting average distance to be 1 km,frame error rate to be 0,entanglement fidelity to be 0. 98,when the node number is 32,33,34,the time delay is 1. 077 0 ms,1. 090 3 ms and 1. 669 0 ms,the throughput is 0. 928 5 kb/s,0. 917 2 kb/s and 0. 599 2 kb/s,respectively.
展开▼
