Teale C, Sherman J, Kitching J
Time and Frequency Division, National Institute of Standards and Technology (NIST), Boulder, Colorado 80305, USA.
AVS Quantum Sci. 2022 Jun;4(2). doi: 10.1116/5.0090892.
We implement a DC voltage reference by measuring Stark shifts of cesium Rydberg atoms in a vapor cell. Cesium atoms are excited from the ground state to the 15s state via a degenerate two-photon transition that provides a narrow, Doppler free line. The 15s state experiences a scalar, quadratic stark shift which is used to measure the voltage across a parallel plate capacitor integrated into the vapor cell. We demonstrate a sensitivity of at a bias voltage of 100 V. The device could be adapted for even larger voltages by increasing the plate spacing or using a lower energy state.
我们通过测量蒸汽室中铯里德堡原子的斯塔克位移来实现一个直流电压基准。铯原子通过简并双光子跃迁从基态激发到15s态，该跃迁提供了一条窄的、无多普勒频移的谱线。15s态经历标量二次斯塔克位移，用于测量集成在蒸汽室中的平行板电容器两端的电压。我们展示了在100V偏置电压下的灵敏度为 。通过增加极板间距或使用更低的能态，该器件可适用于更高的电压。
