Microwave electrometry via electromagnetically induced absorption in cold Rydberg atoms

被引：116

作者：

Liao, Kai-Yu ^{[1
,2
]}

Tu, Hai-Tao ^{[1
,2
]}

Yang, Shu-Zhe ^{[1
,2
]}

Chen, Chang-Jun ^{[1
,2
]}

Liu, Xiao-Hong ^{[1
,2
]}

Liang, Jie ^{[1
,2
]}

Zhang, Xin-Ding ^{[1
,2
]}

Yan, Hui ^{[1
,2
,3
]}

Zhu, Shi-Liang ^{[1
,2
,3
,4
]}

机构：

[1] South China Normal Univ, GPETR Ctr Quantum Precis Measurement, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangzhou 510006, Peoples R China

[2] South China Normal Univ, SPTE, Guangzhou 510006, Peoples R China

[3] South China Normal Univ, Frontier Res Inst Phys, Guangzhou 510006, Peoples R China

[4] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 05期

基金：

中国国家自然科学基金;

关键词：

PRECISION-MEASUREMENT; TRANSPARENCY; EXCITATION; OPTICS;

D O I：

10.1103/PhysRevA.101.053432

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The atom-based traceable standard for microwave electrometry shows promising advantages by enabling stable and uniform measurement. Here we theoretically propose and then experimentally realize an alternative direct International System of Units (SI)-traceable and self-calibrated method for measuring a microwave-electric-field strength based on electromagnetically induced absorption (EIA) in cold Rydberg atoms. Comparing with the method of electromagnetically induced transparency, we show that the equivalence relation between the microwave Rabi frequency and Autler-Townes splitting is more valid and is even more robust against the experimental parameters in the ETA's linear region. Furthermore, a narrower linewidth of cold Rydberg EIA enables us to realize a direct SI-traceable microwave-electric-field measurement as small as similar to 100 mu V cm(-1).

引用

页数：11

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