JILA, National Institute of Standards and Technology and the University of Colorado, Boulder, Colorado 80309-0440, USA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0390, USA.
Phys Rev Lett. 2023 Mar 17;130(11):113203. doi: 10.1103/PhysRevLett.130.113203.
A Wannier-Stark optical lattice clock has demonstrated unprecedented measurement precision for optical atomic clocks. We present a systematic evaluation of the lattice light shift, a necessary next step for establishing this system as an accurate atomic clock. With precise control of the atomic motional states in the lattice, we report accurate measurements of the multipolar and the hyperpolar contributions and the operational lattice light shift with a fractional frequency uncertainty of 3.5×10^{-19}.
基于 Wanier-Stark 光学晶格的原子钟展现出了前所未有的光学原子钟测量精度。我们对晶格光频移进行了系统评估，这对于将该系统确立为精确原子钟而言是必要的下一步。通过对原子在晶格中的运动状态进行精确控制，我们报告了多极和超极晶格光频移项的精确测量结果，其分数频率不确定度为 3.5×10^{-19}。
