Rydberg level shift due to the electric field generated by Rydberg atom collision induced ionization in cesium atomic ensemble
Rydberg level shift due to the electric field generated by Rydberg atom collision induced ionization in cesium atomic ensemble
复制标题
铯原子系综中里德伯原子碰撞引起电离产生的电场引起的里德伯能级移动
DOI：
10.3390/app10165646
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Junmin WANG
中科院分区：
文献类型：
--
作者：
Xin WANG;Jun HE;Ji;ong BAI;Junmin WANG
实验研究了铯原子系综中里德堡原子碰撞电离产生的电场引起的里德堡能级漂移。通过控制基态原子密度和光激发过程，改变里德堡原子碰撞产生的带电粒子密度。我们利用里德堡电磁感应透明(EIT)光谱测量了里德堡能级漂移，并用半经典模型解释了其物理起源。实验结果与数值模拟结果吻合较好。这些能量漂移对于利用里德堡EIT实现微波场的自校准传感具有重要意义。此外，与共振激发的情况相比，具有高信噪比的窄线宽光谱对于高精度测量将是有用的。
We experimentally studied the Rydberg level shift caused by the electric field, which is generated by Rydberg atom collision induced ionization in a cesium atomic ensemble. The density of charged particles caused by collisions between Rydberg atoms is changed by controlling the ground-state atomic density and optical excitation process. We measured the Rydberg level shift using Rydberg electromagnetically-induced-transparency (EIT) spectroscopy, and interpreted the physical origin using a semi-classical model. The experimental results are in good agreement with the numerical simulation. These energy shifts are important for the self-calibrated sensing of microwave field by the employing of Rydberg EIT. Moreover, in contrast to the resonant excitation case, narrow-linewidth spectroscopy with high signal-to-noise ratio would be useful for high-precision measurements.