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  • Open Access

Influence of frequency detuning on a four-level heterodyne Rydberg-atom receiver

Yu Tang*, Chuang Yang, and Shuang Ren

  • National Key Laboratory of Radar Signal Processing and Institute of Information Sensing, Xidian University, Xi'an, Shaanxi 710071, China

  • *Contact author: ytang@xidian.edu.cn
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Phys. Rev. A 113, 043114 – Published 13 April, 2026

DOI: https://doi.org/10.1103/zl3n-gd2k

Abstract

In recent years, quantum reception technology has achieved significant progress in microwave detection. However, most existing studies focus on energy-level resonance conditions, while research on the influence of frequency detuning is relatively scarce. Based on the four-level heterodyne Rydberg-atom receiver system, this paper establishes a theoretical model using the two-dimensional Fourier transform to analyze the correlation between frequency detuning and system response. Through theoretical simulation, the system response under different detuning conditions is quantitatively obtained, and the model is verified by experiment. This study expands the understanding of frequency detuning in Rydberg-atom receivers and provides guidance for designing their parameters in complex environments.

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Phys. Rev. A 113, 043114– Published 13 April, 2026
  • Received 1 October 2025
  • Accepted 17 March 2026
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