Optimal State Choice for Rydberg-Atom Microwave Sensors
Optimal State Choice for Rydberg-Atom Microwave Sensors
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DOI：
10.1103/physrevapplied.16.024008
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发表时间：
2021-05
影响因子：
4.6
通讯作者：
Aur'elien Chopinaud;J. Pritchard
中科院分区：
文献类型：
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作者：
Aur'elien Chopinaud;J. Pritchard
里德伯电磁诱导透明（Rydberg electromagnetically induced transparency，EIT）通过利用高激发里德伯态的强微波电偶极耦合，使得能够实现基于原子的SI可追踪的微波（MW）传感、成像和通信设备。对鲁棒设备的开发至关重要的是仔细表征传感器性能和系统不确定性。本文比较了在13 GHz附近微波跃迁频率下，铯原子蒸气中65 S_（1/2）→ 65 P_（1/2），66 S_（1/2）→ 66 P_（3/2），79 D_（5/2）→ 81 P_（3/2）和62 D_（5/2）→ 60 F_（7/2）四种可能的里德伯耦合的EIT分裂。我们的工作突出了多光子耦合到相邻的里德堡态的影响，打破了所观察到的分裂的对称性和线性，实验观察和理论模型之间的多光子耦合占极好的协议。我们确定了一个最佳的角状态选择强大的微波测量，以及展示了一个新的制度，微波极化可以测量。
Rydberg electromagnetically induced transparency (EIT) enables realization of atom-based SI-traceable microwave (MW) sensing, imaging and communication devices by exploiting the strong microwave electric dipole coupling of highly excited Rydberg states. Essential to the development of robust devices is a careful characterization of sensor performance and systematic uncertainties. In this work we present a comparison of microwaveinduced EIT splitting in a cesium atomic vapor for four possible Rydberg couplings 65S1/2 → 65P1/2, 66S1/2 → 66P3/2, 79D5/2 → 81P3/2 and 62D5/2 → 60F7/2 at microwave transition frequencies around 13 GHz. Our work highlights the impact of multi-photon couplings to neighbouring Rydberg states in breaking both the symmetry and linearity of the observed splitting, with excellent agreement between experimental observations and a theoretical model accounting for multi-photon couplings. We identify an optimal angular state choice for robust microwave measurements, as well as demonstrating a new regime in which microwave polarization can be measured.