基于光子晶体微腔的回波光量子存储  

Optical echo memory based on photonic crystal cavities

作　　者：邢雪燕 李霞霞 陈宇辉 张向东[1] Xing Xue-Yan;Li Xia-Xia;Chen Yu-Hui;Zhang Xiang-Dong(Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems,Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education,School of Physics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学物理学院,先进光电量子结构设计与测量教育部重点实验室,纳米光子学与超精密光电系统北京市重点实验室,北京100081

出　　处：《物理学报》2022年第11期163-170,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:62105033,12174026);北京理工大学学术启动计划和北京理工大学科技创新计划资助的课题.

摘　　要：充分发掘量子计算机的应用潜力需要将大量分立的量子节点连接起来,组建一个与互联网类似的全量子网络.高性能的可集成光量子存储器是解决不同量子节点间信号同步问题的核心器件,直接关系到量子网络的实现规模和整体性能.然而,目前的微纳量子存储器还存在可集成性和存储性能难以兼容的问题,还不能满足构建全量子网络的需求.本文提出在掺铒硅材料上设计通信波段的光子晶体微腔,不仅可利用光学微腔的角动量共振模式来实现基于光子回波的量子存储,还可利用光学微腔来增强光和物质相互作用,有望实现高存储效率的可集成量子存储器.Like internet,connecting quantum computers together to build a full quantum network will enhance the ability to process quantum information.On-chip quantum memories can possess the essential functionalities in building a quantum network,including synchronizing a large number of quantum computers and implementing long-distance quantum communication.However,owning mainly to the constraints imposed by the micro-photonic structures themselves,on-chip quantum memories cannot satisfy the requirement for constructing the full quantum network for the incompatibility of their memory property and integration property.We here propose to build an on-chip quantum memory by using spatial-phase-mismatching effect in photonic crystal cavities.In this scenario,not only is the large orbital angular momentum of photonic crystal cavities utilized to realize photon-echo type memory,but also the light-matter enhancement of a photonic cavity is used to achieve a high-efficiency quantum storage.

关 键 词：量子存储 光子回波 光子晶体腔 空间相位失配 

分 类 号：O413[理学—理论物理] TP333[理学—物理]