原子物理学
物理
联轴节(管道)
角动量
里德伯公式
Atom(片上系统)
角动量耦合
里德堡原子
总角动量
材料科学
电离
量子力学
离子
计算机科学
嵌入式系统
冶金
作者
Nikunjkumar Prajapati,Jakob W. Kunzler,Alexandra B. Artusio‐Glimpse,Andrew P. Rotunno,Samuel Berweger,Matthew T. Simons,Christopher L. Holloway,Chad M. Gardner,Michael S. McBeth,Robert Younts
摘要
Recent advances in Rydberg-atom electrometry detail promising applications in radio frequency communications. Presently, most applications use carrier frequencies greater than 1 GHz where resonant Autler–Townes splitting provides the highest sensitivity. This letter documents a series of experiments with Rydberg atomic sensors to collect and process waveforms from the automated identification system (AIS) used in maritime navigation in the very high frequency (VHF) band. Detection in this band is difficult with conventional resonant Autler–Townes based Rydberg sensing and requires a new approach. We show the results of a method called high angular momentum matching excited Raman (HAMMER), which enhances low frequency detection and exhibits superior sensitivity compared to the traditional AC Stark effect. From measurements of electromagnetically induced transparency in rubidium and cesium vapor cells, we show the relationship between incident electric field strength and observed signal-to-noise ratio and find that the sensitivity of the HAMMER scheme in rubidium achieved an equivalent single VHF tone sensitivity of 100μV/m/Hz. With these results, we estimate the usable range of the atomic vapor cell antenna for AIS waveforms given current technology and detection techniques.
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