物理
里德伯公式
角动量
原子物理学
电场
激发
电磁感应透明
里德堡原子
光子
量子力学
离子
电离
作者
Richard Harvey Brown,Baran Kayim,Michael A. Viray,Abigail R. Perry,Brian C. Sawyer,Robert Wyllie
出处
期刊:Physical review
日期:2023-05-12
卷期号:107 (5)
被引量:5
标识
DOI:10.1103/physreva.107.052605
摘要
We demonstrate resonant detection of rf electric fields from 240 to 900 MHz (very high frequency to ultrahigh frequency) using electromagnetically induced transparency to measure orbital angular momentum $L=3\ensuremath{\rightarrow}{L}^{\ensuremath{'}}=4$ 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 superhetrodyne detection setup, we measure the noise floor at $n=50$ to be $13\phantom{\rule{0.16em}{0ex}}\textmu{}\mathrm{V}/(\mathrm{m}\sqrt{\mathrm{Hz}})$. 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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