Very-high- and ultrahigh- frequency electric field detection using high angular momentum Rydberg states

• URL: http://arxiv.org/abs/2205.12876v3
• Date: Fri, 19 May 2023 18:42:44 GMT
• Title: Very-high- and ultrahigh- frequency electric field detection using high angular momentum Rydberg states
• Authors: Roger C. Brown, Baran Kayim, Michael A. Viray, Abigail R. Perry, Brian C. Sawyer, and Robert Wyllie
• Abstract summary: We demonstrate resonant detection of very-high-frequency (VHF) to ultra-high-frequency (UHF) We find good agreement between measured spectra and predictions of quantum defect theory for principal quantum numbers $n=45$ to $70$. We utilize data and a numerical model incorporating a five-level master equation solution to estimate the fundamental sensitivity limits of our system.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We demonstrate resonant detection of rf electric fields from 240 MHz to 900 MHz (very-high-frequency (VHF) to ultra-high-frequency (UHF)) using electromagnetically induced transparency to measure orbital angular momentum $L=3\rightarrow L'=4$ Rydberg transitions. These Rydberg states are accessible with three-photon infrared optical excitation. By resonantly detecting rf in the electrically small regime, these states enable a new class of atomic receivers. We find good agreement between measured spectra and predictions of quantum defect theory for principal quantum numbers $n=45$ to $70$. Using a super-hetrodyne detection setup, we measure the noise floor at $n=50$ to be $13\,\mathrm{\mu V/m/\sqrt{Hz}}$. Additionally, we utilize data and a numerical model incorporating a five-level master equation solution to estimate the fundamental sensitivity limits of our system.

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