论文标题
原子射频干涉法
Atom radio-frequency interferometry
论文作者
论文摘要
我们认识并模拟了Rydberg-State原子干涉仪，以测量射频（RF）电磁波的相位强度。通过调制激光束向原子提供相位参考，从而在没有外部RF参考波的情况下可以对RF波的相位进行原子测量。 RF和光场在原子内部希尔伯特空间内产生封闭的干涉循环。在我们的实验中，我们在状态空间中构建干涉循环$ \ {6p_ {3/2}，90s_ {1/2}，91s_ {1/2}，90p_ {3/2} \} cesium $ cesium的$，并雇用它们以测量5 ghz rf rf wavel in e Aroomperature vaperature vave v a vave v a vave v a vave。 $ 6S_ {1/2} $至$ 6p_ {3/2} $过渡的电磁引起的透明度可作为全光学干涉仪探针。 RF相测量在$π$的范围内，并达到2 mrad的灵敏度。在亚毫米光空间分辨率下，RF相和幅度测量值已证明。
We realize and model a Rydberg-state atom interferometer for measurement of phase and intensity of radio-frequency (RF) electromagnetic waves. A phase reference is supplied to the atoms via a modulated laser beam, enabling atomic measurement of the RF wave's phase without an external RF reference wave. The RF and optical fields give rise to closed interferometric loops within the atoms' internal Hilbert space. In our experiment, we construct interferometric loops in the state space $\{ 6P_{3/2}, 90S_{1/2}, 91S_{1/2}, 90P_{3/2} \}$ of cesium and employ them to measure phase and intensity of a 5 GHz RF wave in a room-temperature vapor cell. Electromagnetically induced transparency on the $6S_{1/2}$ to $6P_{3/2}$ transition serves as an all-optical interferometer probe. The RF phase is measured over a range of $π$, and a sensitivity of 2 mrad is achieved. RF phase and amplitude measurements at sub-millimeter optical spatial resolution are demonstrated.
