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| Measurement of Microwave Phase Shift Based on Rydberg Atoms |
| ZHANG Ying-yun1,RUAN Wei-min1,2,FENG Zhi-gang1,QU Ji-feng1,SONG Zhen-fei1 |
1. National Institute of Metrology, Beijing 100029, China
2. China Jiliang University, Hangzhou, Zhejiang 310018, China |
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Abstract The microwave quantum precision measurement based on Rydberg electromagnetically induced transparency,due to its advantages of high sensitivity,high resolution,broadband and having direct traceability path to the fundamental physical constant,can be used in various applications,including microwave quantum metrology,communication and imaging.A method for microwave phase shift measurement using rubidium Rydberg atoms is presented here.First, heterodyne reception of signal (SIG) microwave field and local oscillator (LO) microwave field is realized by using hot rubidium Rydberg atomic spectrum, and intermediate frequency (IF) signals with the same phase shift as SIG microwave field are obtained; then the measured signal is processed by the lock-in amplification algorithm to realize the detection of phase difference between the IF signal and a reference signal.The reference signal has the same frequency of IF signal.Finally, while keeping the local microwave field and reference signal unchanged, the phase of the SIG microwave is changed by using the displacement stage, and the microwave phase shift is measured by comparing the phase difference measured at different positions. In order to verify the correctness of the phase shift measurement results,the microwave propagation constant of this frequency is calculated by linear fitting of displacement and the measured phase shift,the relative error of measured microwave propagation constant of 6.92GHz to the theoretical value is within 0.2%. By demonstrating the possibility of microwave phase-shift total optical measurement, the application of microwave quantum precision measurement technology in the field of communication and radar has been laid down.
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Received: 09 March 2023
Published: 21 September 2023
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|
| ［2］ |
闫浩. 微电子机械微波通讯信号集成检测系统的研究 ［D］. 南京: 东南大学, 2018.
|
| ［18］ |
Prajapati N, Robinson A K, Norrgard E B, et al. Rydberg Atom-Based AC/DC Voltage Measurements［C］// Conference on Lasers and Electro-Optics (CLEO), on line 2021.
|
| ［5］ |
Ma L, Viray M A, Anderson D A, et al. Measurement of dc and ac electric fields inside an atomic vapor cell with wall-integrated electrodes［J］. Physical Review Applied, 2022, 18 (2): 1-9.
|
| ［7］ |
Holloway C L, Simons M T, Gordon J A, et al. Atom-Based RF Electric Field Metrology: From Self-Calibrated Measurements to Subwavelength and Near-Field Imaging ［J］. IEEE Transactions on Electromagnetic Compatibility, 2017, 59 (2): 717-728.
|
| ［13］ |
Ding D S, Liu Z K, Shi B S, et al. Enhanced metrology at the critical point of a many-body Rydberg atomic system ［J］. Nature Physics, 2022: 1-6.
|
| ［15］ |
张杰, 宋振飞, 李君, 等. 基于里德堡原子的微波功率精密测量 ［J］. 计量学报, 2019, 40 (5): 749-754.
|
| ［1］ |
韩居正. 面向锁相环的MEMS微波相位检测器的研究 ［D］. 南京: 东南大学, 2017.
|
| ［8］ |
Liao K Y, Tu H T, Yang S Z, et al. Microwave electrometry via electromagnetically induced absorption in cold Rydberg atoms ［J］. Physical Review A, 2020, 101 (5): 1-7.
|
| ［10］ |
You S H, Cai M H, Zhang S S, et al. Microwave-field sensing via electromagnetically induced absorption of Rb irradiated by three-color infrared lasers ［J］. Opt Express, 2022, 30 (10): 16619-16629.
|
|
Zhang J, Song Z F, Li J, et al.Precision Measurement of Microwave Power Using Rydberg Atoms ［J］. Acta Metrologica Sinica, 2019, 40 (5): 749-754.
|
| ［17］ |
Downes L A, MacKellar A R, Whiting D J, et al. Full-field terahertz imaging at kilohertz frame rates using atomic vapor ［J］. Physical Review X, 2020, 10 (1): 1-7.
|
| ［20］ |
Song Z, Liu H, Liu X, et al. Rydberg-atom-based digital communication using a continuously tunable radio-frequency carrier ［J］. Opt Express, 2019, 27 (6): 8848-8857.
|
| ［6］ |
Sedlacek J A, Schwettmann A, Kübler H, et al. Microwave electrometry with Rydberg atoms in a vapour cell using bright atomic resonances ［J］. Nature Physics, 2012, 8 (11): 819-824.
|
| ［14］ |
Holloway C L, Simons M T, Kautz M D, et al. A quantum-based power standard: Using Rydberg atoms for a SI-traceable radio-frequency power measurement technique in rectangular waveguides ［J］. Applied Physics Letters, 2018, 113 (9): 1-6.
|
| ［3］ |
Kumar S, Fan H, Kübler H, et al. Rydberg-atom based radio-frequency electrometry using frequency modulation spectroscopy in room temperature vapor cells ［J］. Opt Express, 2017, 25 (8): 8625-8637.
|
| ［4］ |
Gordon J A, Holloway C L, Schwarzkopf A, et al. Millimeter wave detection via Autler-Townes splitting in rubidium Rydberg atoms ［J］. Applied Physics Letters, 2014, 105 (2): 1-5.
|
| ［11］ |
Fan H, Kumar S, Sedlacek J, et al. Atom based RF electric field sensing ［J］. Journal of Physics B: Atomic, Molecular and Optical Physics, 2015, 48 (20): 1-17.
|
| ［12］ |
Jing M, Hu Y, Ma J, et al. Atomic superheterodyne receiver based on microwave-dressed Rydberg spectroscopy ［J］. Nature Physics, 2020, 16 (9): 911-915.
|
| ［19］ |
Simons M T, Artusio-Glimpse A B, Robinson A K, et al. Rydberg atom-based sensors for radio-frequency electric field metrology, sensing, and communications ［J］. Measurement: Sensors, 2021, 18: 1-4.
|
| ［21］ |
Simons M, Haddab A, Gordon J, et al. A Rydberg atom-based mixer: Measuring the phase of a radio frequency wave ［J］. Applied Physics Letters, 2019, 114: 1-4.
|
| ［9］ |
Liu X, Jia F, Zhang H, et al. Using amplitude modulation of the microwave field to improve the sensitivity of Rydberg-atom based microwave electrometry ［J］. AIP Advances, 2021, 11 (8): 1-6.
|
| ［16］ |
Jiao Y, Hao L, Han X, et al. Atom-Based Radio-Frequency Field Calibration and Polarization Measurement Using Cesium nDJ Floquet States ［J］. Physical Review Applied, 2017, 8 (1): 1-8.
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2023, Vol. 44 
