Extending microwave-frequency electric-field detection through single transmission peak method  

作　　者：刘青 陈进湛 王赫 张杰 阮伟民 伍国柱 郑顺元 罗景庭 宋振飞 ing Liu;Jin-Zhan Chen;He Wang;Jie Zhang;Wei-Min Ruan;Guo-Zhu Wu;Shun-Yuan Zheng;Jing-Ting Luo;Zhen-Fei Song(College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China;Shenzhen Institute for Technology Innovation,National Institute of Metrology,Shenzhen 518107,China;Center for Advanced Measurement Science,National Institute of Metrology,Beijing 100029,China)

机构地区：[1]College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China [2]Shenzhen Institute for Technology Innovation,National Institute of Metrology,Shenzhen 518107,China [3]Center for Advanced Measurement Science,National Institute of Metrology,Beijing 100029,China

出　　处：《Chinese Physics B》2024年第5期417-423,共7页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2021YFF0603704);the National Natural Science Foundation of China(Grant No.62071443)。

摘　　要：The strength of microwave(MW)electric field can be observed with high precision by using the standard electromagnetically induced transparency and Aulter–Towns(EIT-AT)technique,when its frequency is resonant or nearly-resonant with the Rydberg transition frequency.As the detuning of MW field increases,one of the transmission peaks(single peak)is easier to measure due to its increased amplitude.It can be found that the central symmetry point of the two transmission peaks f_(1/2)is only related to the detuning of MW field△_(MW)and central symmetry point f_(0)of resonant MW field,satisfying the relation f_(1/2)=△_(MW)/2+f_(0).Thus,we demonstrate a single transmission peak method that the MW E-field can be determined by interval between the position of single peak and f_(1/2).We use this method to measure continuous frequencies in a band from-200 MHz to 200 MHz of the MW field.The experimental results and theoretical analysis are presented to describe the effectiveness of this method.For 50 MHz<△_(MW)<200 MHz,this method solves the problem that the AT splitting cannot be measured by using the standard EIT-AT techniques or multiple atomic-level Rydberg atom schemes.

关 键 词：microwave electric field Rydberg atom electromagnetically induced transparency(EIT) Aulter-Towns splitting 

分 类 号：O562[理学—原子与分子物理]