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Highly sensitive microwave electrometry with enhanced instantaneous bandwidth

Bowen Yang1,2,3, Yuhan Yan1,2,4, Xuejie Li1,2,4, Ling Xiao1,2, Xiaolin Li5, L.Q. Chen4,6,*, Jianliao Deng1,2,†, and Huadong Cheng1,2,3,‡

  • 1Key Laboratory of Quantum Optics and Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Wangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 4Department of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
  • 5School of Physics, East China University of Science and Technology, China
  • 6Shanghai Branch, Hefei National Laboratory, Shanghai 201315, China

  • *lqchen@phy.ecnu.edu.cn
  • †jldeng@siom.ac.cn
  • ‡chenghd@siom.ac.cn
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Phys. Rev. Applied 21, L031003 – Published 6 March, 2024

DOI: https://doi.org/10.1103/PhysRevApplied.21.L031003

Abstract

Rydberg microwave (MW) sensors are superior to conventional antenna-based techniques because of their wide operating frequency range and outstanding potential sensitivity. Here, we demonstrate a Rydberg microwave receiver with a high sensitivity of 62nVcm−1Hz−1/2 and broad instantaneous bandwidth of up to ±10.2MHz. Such excellent performance was achieved by the amplification of one generated sideband wave induced by the strong coupling field in the six-wave mixing process of the Rydberg superheterodyne receiver, which was well predicted by our theory. Our system, which possesses a uniquely enhanced instantaneous bandwidth and high-sensitivity features that can be improved further, will promote the application of Rydberg microwave electrometry in radar and communication.

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Phys. Rev. Applied 21, L031003– Published 6 March, 2024
  • Received 13 August 2023
  • Revised 27 January 2024
  • Accepted 7 February 2024
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