论文标题
探针场椭圆度引起的原子钟的变化
Probe field ellipticity-induced shift in an atomic clock
论文作者
论文摘要
我们研究了基于原子晶格和离子陷阱时钟的探针场诱导的偏移，可以将其视为近乎谐振的AC-stark Shings，连接到原子水平的Zeeman结构及其在DC磁场中的分裂。这种转移是由于探针场极化中可能的残留椭圆形和磁场方向的不确定性引起的。这样的班次可以具有任意标志，并且在某些实验条件下，可以达到10 $^{ - 18} $ -10 $^{ - 19} $的订单的分数值，即，它不可忽略。因此，应在现代超专有原子钟的不确定性预算中考虑到它。此外，可以表明，当使用超斑点光谱法时，可以将这种偏移降低到低于$ 10^{ - 19} $的水平。
We investigate the probe field induced shift for atomic lattice-based and ion-trap clocks, which can be considered as a near resonant ac-Stark shift, connected to the Zeeman structure of atomic levels and their splitting in a dc magnetic field. This shift arises from possible residual ellipticity in the polarization of the probe field and uncertainty in the magnetic field orientation. Such a shift can have an arbitrary sign and, for some experimental conditions, can reach the fractional value of the order of 10$^{-18}$-10$^{-19}$, i.e., it is not negligible. Thus, it should be taken into account in the uncertainty budgets for the modern ultra-precise atomic clocks. In addition, it is shown that when using hyper-Ramsey spectroscopy, this shift can be reduced to a level much lower than $10^{-19}$.
