论文标题
一千个离子sn $^{2+}的前景，$ colomb-crystal时钟，$ 10^{ - 19} $ inccuracy
Prospects of a thousand-ion Sn$^{2+}$ Coulomb-crystal clock with sub-$10^{-19}$ inaccuracy
论文作者
论文摘要
我们提出了一个基于订单的三维库仑晶体一千sn $^{2+} $ ions限制在线性RF Paul Trap中的繁殖库仑晶体。 Sn$^{2+}$ has a unique combination of features that is not available in previously considered ions: a $^1$S$_0$ $\leftrightarrow$ $^3$P$_0$ clock transition between two states with zero electronic and nuclear angular momentum (I = J = F = 0) making it immune to nonscalar perturbations, a negative differential polarizability making it possible to operate the trap in a manner因此，三维离子晶体的两个主要移动相互抵消，以及适合直接激光冷却和状态读数的激光访问过渡。我们介绍了差异性，其他相关的原子特性以及大型库仑晶体中离子运动的计算，以估计Sn $^{2+} $ coulomb-clomb-crystal时钟的可实现准确性和精度。
We propose a many-ion optical atomic clock based on three-dimensional Coulomb crystals of order one thousand Sn$^{2+}$ ions confined in a linear RF Paul trap. Sn$^{2+}$ has a unique combination of features that is not available in previously considered ions: a $^1$S$_0$ $\leftrightarrow$ $^3$P$_0$ clock transition between two states with zero electronic and nuclear angular momentum (I = J = F = 0) making it immune to nonscalar perturbations, a negative differential polarizability making it possible to operate the trap in a manner such that the two dominant shifts for three-dimensional ion crystals cancel each other, and a laser-accessible transition suitable for direct laser cooling and state readout. We present calculations of the differential polarizability, other relevant atomic properties, and the motion of ions in large Coulomb crystals, in order to estimate the achievable accuracy and precision of Sn$^{2+}$ Coulomb-crystal clocks.
