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Accuracy improvement of AC Stark shift microwave detection based on a “frequency ruler”

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【作者】 刘帅； 李中豪； 李斌； 张立婷； 徐世宏； 孔静霞； 郭浩； 温焕飞； 马宗敏； 李鑫； 唐军； 刘俊；

【Author】 Shuai Liu;Zhonghao Li;Bin Li;Liting Zhang;Shihong Xu;Jingxia Kong;Hao Guo;Huanfei Wen;Zongmin Ma;Xin Li;Jun Tang;Jun Liu;State Key Laboratory of Widegap Semiconductor Optoelectronic Materials and Technologies, North University of China;State Key Laboratory of Extreme Environment Optoelectronic Dynamic Testing Technology and Instruments, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China;

【通讯作者】 李中豪;唐军;刘俊;

【机构】 State Key Laboratory of Widegap Semiconductor Optoelectronic Materials and Technologies, North University of China； State Key Laboratory of Extreme Environment Optoelectronic Dynamic Testing Technology and Instruments, Shanxi Province Key Laboratory of Quantum Sensing and Precision Measurement, North University of China；

【摘要】 The detection accuracy of frequency shift is crucial in microwave detection based on the Rydberg atomic alternating current(AC) Stark shift effect. We design a frequency shifter system that can provide a high-precision frequency reference signal and improve the detection accuracy of frequency shift. This system utilizes acoustic-optic modulators to generate two coupling lights with a fixed frequency interval and completes double Rydberg atomic excitation. The detection accuracy of the AC Stark shift(±1.33 MHz) is 6.08 times better than that of the wavelength meter-reading scheme(±8.09 MHz), and the minimum detectable frequency shift is improved by a factor of 3.13.

【Abstract】 The detection accuracy of frequency shift is crucial in microwave detection based on the Rydberg atomic alternating current(AC) Stark shift effect. We design a frequency shifter system that can provide a high-precision frequency reference signal and improve the detection accuracy of frequency shift. This system utilizes acoustic-optic modulators to generate two coupling lights with a fixed frequency interval and completes double Rydberg atomic excitation. The detection accuracy of the AC Stark shift(±1.33 MHz) is 6.08 times better than that of the wavelength meter-reading scheme(±8.09 MHz), and the minimum detectable frequency shift is improved by a factor of 3.13.

【关键词】 Rydberg atom； AC Stark shift； acoustic-optic modulator； frequency ruler；
【Key words】 Rydberg atom； AC Stark shift； acoustic-optic modulator； frequency ruler；
【基金】 supported by the National Natural Science Foundation of China (Nos. 52435011, 51821003, 62103385, and 62175219);the Joint Funds of the National Natural Science Foundation of China (No. U21A20141)
  • 【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2025年07期
  • 【分类号】O562;O43
  • 【下载频次】2
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