Rydberg atom electromagnetic measurement noise reduction method
By designing a closed-loop circulating optical path, the signal-to-noise ratio and excitation efficiency of Rydberg atomic microwave measurements were improved, solving the problems of low excitation efficiency and poor noise suppression in existing technologies, and realizing high-precision microwave electric field measurement.
CN122283252APending Publication Date: 2026-06-26PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Patent Information
- Application Number
- CN202610730186.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-26
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing microwave measurement schemes for Rydberg atoms suffer from low excitation efficiency of Rydberg states, poor noise suppression capabilities, and large systematic errors, resulting in limited measurement sensitivity and low accuracy.
Method used
By adopting a closed-loop circulating optical path design, the 509nm coupled light passes through the cesium atom gas cell multiple times, achieving coherent superposition of Rydberg states and incoherent cancellation of noise, thereby improving the signal-to-noise ratio and reducing system errors.
Benefits of technology
It significantly improves the excitation efficiency of Rydberg states, enhances the signal-to-noise ratio, reduces system errors, and achieves high-precision microwave electric field measurement.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a Rydberg atom electromagnetic measurement noise reduction method. According to the method, a 509nm coupling light closed-loop circulation system comprising a polarization beam splitter, a half-wave plate and a high-reflectivity mirror is constructed to realize multiple times of reciprocating propagation of laser in an atomic gas chamber, and a light path circulation mechanism is utilized to remarkably improve the coupling strength of light and atoms and greatly improve the excitation efficiency of the Rydberg state on the premise of not increasing the power of a laser source. Meanwhile, due to the structure, the intermediate frequency carrier signals are linearly coherently superposed along with the cycle index, and laser background noise is incoherently accumulated only according to the square root law, so that the measurement signal-to-noise ratio is remarkably improved. The problems that an existing single-pass optical path is low in excitation efficiency and laser background noise is difficult to eliminate can be solved, and a new scheme with high excitation efficiency and high signal-to-noise ratio is provided for high-sensitivity microwave electric field measurement.
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