Tunable frequency of a microwave mixed receiver based on Rydberg atoms under the Zeeman effect

Researchers are interested in the sensor based on Rydberg atoms because of its broad testing frequency range and outstanding sensitivity. However, the discrete frequency detection limits its further employment. We expand the frequency range of microwaves using Rydberg atoms under the Zeeman effect....

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Published in:Optics express 2023-10, Vol.31 (22), p.36255-36262
Main Authors: Shi, Yuansheng, Li, Chao, Ouyang, Kang, Ren, Wu, Li, Weiming, Cao, Meng, Xue, Zhenghui, Shi, Meng
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container_end_page 36262
container_issue 22
container_start_page 36255
container_title Optics express
container_volume 31
creator Shi, Yuansheng
Li, Chao
Ouyang, Kang
Ren, Wu
Li, Weiming
Cao, Meng
Xue, Zhenghui
Shi, Meng
description Researchers are interested in the sensor based on Rydberg atoms because of its broad testing frequency range and outstanding sensitivity. However, the discrete frequency detection limits its further employment. We expand the frequency range of microwaves using Rydberg atoms under the Zeeman effect. In such a scheme, the magnetic field is employed as a tool to split and modify adjacent Rydberg level intervals to realize tunable frequency measurement over 100 MHz under 0-31.5 Gauss magnetic field. In this frequency range, the microwave has a linear dynamic variation range of 63 dB, and has achieved a sensitivity of 11.72 µV cm -1 Hz -1/2 with the minimum detectable field strength of 17.2 µV/cm.. Compared to the no magnetic field scenario, the sensitivity would not decrease. By theoretical analysis, in a strong magnetic field, the tunable frequency range can be much larger than 100 MHz. The proposed method for achieving tunable frequency measurement provides a crucial tool in radars and communication.
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title Tunable frequency of a microwave mixed receiver based on Rydberg atoms under the Zeeman effect
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