https://doi.org/10.1140/epjqt/s40507-024-00231-3
Research
Local oscillator port integrated resonator for Rydberg atom-based electric field measurement enhancement
College of Electronic Science and Technology, National University of Defense Technology, 410073, Changsha, China
Received:
30
October
2023
Accepted:
7
March
2024
Published online:
22
March
2024
Rydberg atom-based superheterodyne with additional local oscillator (LO) signal is a novel approach to detect electric field with high measured sensitivity. However, the LO signal is often supplied to the atomic vapor cell by free-space illumination, which lacks mobility and integration for practical applications. Here, we present a LO port integrated split-ring resonator for realizing high sensitivity-enhanced electric field measurements. The LO signal is sent directly to the resonator through a parallel-plate waveguide, which is shown to achieve a sensitivity enhancement of 32 dB. The integrated resonator has an electrical size of 0.088λ and the feed port S11 reaches −38.2 dB.
Key words: Rydberg atom-based metrology / Superheterodyne / Local oscillator port integrated
© The Author(s) 2024
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