研究目的
Investigating the use of a Rydberg atom-based sensor embedded in a waveguiding structure for simultaneous amplitude and phase measurements of RF fields, and its application in near-field antenna measurements to extract far-field patterns.
研究成果
The integrated waveguide and Rydberg atom system effectively measures RF field amplitude and phase in the near-field of an antenna, enabling far-field pattern extraction. This system shows promise for antenna calibrations and quantum-based RF signal reception, with potential advantages in noise-rejection and weak signal detection.
研究不足
The scan range was limited due to optical mounts causing scattering, and the effect of the PPWG on the AUT field was not corrected, leading to errors in far-field pattern calculation.
1：Experimental Design and Method Selection:
The experiment utilizes a Rydberg atom-based sensor in a mixer configuration within a parallel-plate waveguide (PPWG) for RF field measurements.
2：Sample Selection and Data Sources:
A vapor cell filled with 133Cs atoms is used as the sensing element.
3：List of Experimental Equipment and Materials:
Includes a PPWG, cesium vapor cell, signal generators, horn antenna, and photodetector.
4：Experimental Procedures and Operational Workflow:
The LO RF field is supplied through the PPWG, and the SIG field is introduced via a horn antenna. The amplitude and phase of the RF field are measured through the probe laser transmission spectrum.
5：Data Analysis Methods:
The EIT peak separation is analyzed to determine RF field amplitude, and the phase difference between LO and SIG fields is measured via the IF signal.
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