基于冷里德堡原子电磁感应透明和Autler-Townes分裂的原子矢量微波电场计  

Atom-based Vector Microwave Electrometry via Electromagnetic Induction Transparency and Autler-Townes Splitting in Cold Rydberg Atoms

作　　者：刘修彬 贾凤东 周飞 俞永宏 张剑 谢锋 钟志萍 LIU Xiu-bin;JIA Feng-dong;ZHOU Fei;YU Yong-hong;ZHANG Jian;XIE Feng;ZHONG Zhi-ping(School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Institute of Nuclear and New Energy Technology,Collaborative Innovation Center of Advanced Nuclear Energy Technology,Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education,Tsinghua University,Beijing 100084,China;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院大学物理科学学院,北京100049 [2]中国科学院物理研究所,北京100190 [3]清华大学核能与新能源技术研究院,先进核能技术协同创新中心,先进反应堆工程与安全教育部重点实验室,北京100084 [4]中国科学院大学,中国科学院拓扑量子计算卓越中心,北京100190

出　　处：《宇航计测技术》2023年第3期5-10,共6页Journal of Astronautic Metrology and Measurement

基　　金：北京市自然科学基金(1212014);中国科学院战略性先导科技专项B类(XDB28000000);中央高校基本科研业务费专项资金和国家重点研发计划(2017YFA0304900,2017YFA0402300)资助。

摘　　要：利用冷原子温度低、里德堡电磁感应透明(EIT)谱峰窄、原子量子态明确的优势,在冷铷原子样品中基于里德堡EIT和Autler-Townes(AT)分裂效应直接通过光谱频率间隔测量了微波电场的极化。结果表明,里德堡EIT-AT分裂间隔随微波电场极化方向的改变呈现单调变化,并与微波电场极化在探测光偏振方向上的投影成正比,实现了微波电场极化分辨率3.2°。相比于传统的热原子蒸汽池中利用EIT共振处探测光透过率变化的方法而言,基于冷原子的EIT-AT分裂间距测量微波极化的方法具有更为直接、准确和分析简单等优点。该工作对微波极化的绝对测量和电场强度的校准都具有重要的意义。Utilizing the advantages of low temperature of cold atoms,narrow spectral peaks of Rydberg Electromagnetic Induction Transparency(EIT),and clear atomic quantum states.The polarization of the microwave can be measured directly through spectral intervals in cold atomic samples based on Rydberg EIT and Autler-Townes(AT) splitting.The results show that the splitting interval of the Rydberg EIT-AT varies monotonously with the polarization of the microwave electric field and is proportional to the projection of the polarization of the microwave electric field on the polarization direction of the probe laser.The resolution is 3.2 °.Compared with the traditional method of using EIT resonance to detect the change of light transmittance in the hot atom vapor cell,the method based on cold atom EIT-AT splitting interval has the advantages of more direct,accurate and simple analysis.This work is of great significance to the absolute measurement of microwave polarization and the calibration of electric field strength.

关 键 词：量子传感 微波电场 里德堡原子 电磁感应透明 

分 类 号：O433.4[机械工程—光学工程]