Rydberg Atom-Based Ultra-Broadband Radio Frequency Sensor from 100 kHz to 40 GHz

Kai Yang; Qiang An; Jiawei Yao; Ruiqi Mao; Yi Lin; Yi Liu; Yunqi Fu

doi:10.3788/AOS202242.1528002

Acta Optica Sinica, Volume. 42, Issue 15, 1528002(2022)

Rydberg Atom-Based Ultra-Broadband Radio Frequency Sensor from 100 kHz to 40 GHz

Kai Yang, Qiang An, Jiawei Yao, Ruiqi Mao, Yi Lin^*, Yi Liu^**, and Yunqi Fu^***

Department of Electronic Science and Technology, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, Hunan , China

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Figures & Tables(6)

Fig. 1. Experimental setup and energy-level diagram. (a) Diagram of experimental setup; (b) energy-level diagram of two-photon transition ladder Rydberg EIT

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Fig. 2. Transmission spectra of probe light and relationship between offset and $\sqrt[]{M_{E I R P}}$ for cesium atom with different Rydberg states under electromagnetic wave irradiation. (a) Transmission spectra of probe light for cesium atom with $|42 D_{5 / 2}〉$ Rydberg state under 9.953 GHz microwave illumination at different EIRPs; (b) relationship between $Δ D_{A T}$ and $\sqrt[]{M_{E I R P}}$ for $|42 D_{5 / 2}〉$ → $|43 P_{3 / 2}〉$ resonance transition; (c) transmission spectra of probe light for cesium atom with $|30 D_{5 / 2}〉$ Rydberg state under 29.54 GHz microwave illumination at different EIRPs; (d) relationship between $Δ D_{A T}$ and $\sqrt[]{M_{E I R P}}$ for $|30 D_{5 / 2}〉$ → $|31 P_{3 / 2}〉$ resonance transition; (e) transmission spectra of probe light for cesium atom with $|70 S_{1 / 2}〉$ Rydberg state under 2 GHz microwave illumination at different EIRPs; (f) relationship between $Δ D_{S t a r k}$ and $\sqrt[]{M_{E I R P}}$ for $|70 S_{1 / 2}〉$ state

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Fig. 3. Demodulated signal SNR varying with modulation frequency under different carrier frequencies. (a) AM test results with 40% modulation depth; (b) FM test results with modulation bandwidth of－2.5-2.5 MHz

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Fig. 4. Demodulated signal SNRs of AM modulation signal with modulation depth of 40% and modulation frequency of 10 kHz under different carrier frequencies

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Table 1. Comparison of attenuation factors corresponding to different microwave frequencies
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Table 1. Comparison of attenuation factors corresponding to different microwave frequencies
RF frequency /GHz
α₀ /
（Hz·V^-2·m²）
μ /（C·m） Fitting coefficient /（MHz·W^-1/2） Φ
9.953 9.644×10^-27 61.711 0.339
29.54 4.675×10^-27 22.677 0.125
2 1.581×10⁴ 0.782 0.545

Table 2. Comparison of modulated signal measurement capabilities in related researches
View table
Table 2. Comparison of modulated signal measurement capabilities in related researches
Research Response region Modulation type Maximum detected frequency /MHz
［30］ On-resonant AM 4
［32］ On-resonant AM 0.56
［34］ On-resonant AM 2
This work On/near/off-resonant AM/FM 2.5/3.0

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Kai Yang, Qiang An, Jiawei Yao, Ruiqi Mao, Yi Lin, Yi Liu, Yunqi Fu. Rydberg Atom-Based Ultra-Broadband Radio Frequency Sensor from 100 kHz to 40 GHz[J]. Acta Optica Sinica, 2022, 42(15): 1528002

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Paper Information

Category: Remote Sensing and Sensors

Received: Jan. 7, 2022

Accepted: Feb. 23, 2022

Published Online: Aug. 4, 2022

The Author Email: Yi Lin (linyi@nudt.edu.cn), Yi Liu (yi_liu@nudt.edu.cn), Yunqi Fu (yunqifu@nudt.edu.cn)

DOI:10.3788/AOS202242.1528002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Comparison of attenuation factors corresponding to different microwave frequencies

Table 1. Comparison of attenuation factors corresponding to different microwave frequencies

Table 2. Comparison of modulated signal measurement capabilities in related researches

Table 2. Comparison of modulated signal measurement capabilities in related researches