摘要
量子通信发展的最终目标是构建全国乃至洲际的大尺度量子通信网络,然而受限于光子损耗,目前安全量子通信的距离被限制在百公里量级。目前有两种方案可以有效拓展安全量子通信的工作距离,即量子中继方案和量子加密U盘方案。这两套方案所需要的核心器件都是高性能量子存储器,所以针对具体通信方案优化存储器技术指标,演示基于量子存储器的量子通信技术,是现阶段量子通信研究的核心任务。本项目针对以上科学问题及关键技术,以具体应用方案为导向,基于固体中的稀土离子系综研制高性能固态量子存储器。本文主要介绍项目实施以来相关方面的研究内容以及研究进展。
The ultimate goal of quantum communication is to build a large-scale quantum communication network.However,due to photon loss,the current distance of secure quantum communication is limited to the order of 100 km.At present,there are two schemes that can effectively extend the working distance of secure quantum communication,i.e.,quantum repeater and quantum encrypted U-disk.The core devices required by both of the two schemes are high-quality quantum memories,therefore optimizing the memory performances for specific communication solutions and demonstrating quantum communication technology based on quantum memory are the core tasks of quantum communication research at this stage.Aiming at the above scientific problems and key technologies,this project is guided by specific application programs,and develops high-performance solid-state quantum memory based on rare-earth ion crystals.This article mainly introduces the research content and research progress of relevant aspects since the implementation of the project.
作者
周宗权
韩永建
李传锋
Zhou Zongquan;Han Yongjian;Li Chuanfeng(CAS Key Laboratory of Quantum Information,,Hefei 230026;University of Science and Technology of China,Hefei 230026)
出处
《中国基础科学》
2020年第1期30-35,共6页
China Basic Science
基金
国家重点研发计划项目(2017YFA0304100)
关键词
固态量子存储器
稀土掺杂晶体
量子中继
量子加密U盘
晶体生长
solid state quantum memory
rare-earth ion dopped crystal
quantum repeater
quantum encrypted U-disk
crystal growing
