Systematic Effects in Atomic Fountain Clocks

8th Symposium on Frequency Standards and Metrology 2015

Gibble, Kurt^1

Department of Physics, Pennsylvania State University, University Park, United States^1

关键词: Atomic fountain clocks;    Atomic wave packets;    Background gas;    Frequency shift;    Photon recoils;    Smooth transitions;    Systematic effects;    Systematic uncertainties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/723/1/012002/pdf
DOI  :  10.1088/1742-6596/723/1/012002

来源: IOP

【 摘 要 】

We describe recent advances in the accuracies of atomic fountain clocks. New rigorous treatments of the previously large systematic uncertainties, distributed cavity phase, microwave lensing, and background gas collisions, enabled these advances. We also discuss background gas collisions of optical lattice and ion clocks and derive the smooth transition of the microwave lensing frequency shift to photon recoil shifts for large atomic wave packets.