本文研究了类氢系统中高激发束缚态（里德堡态）的相对论效应和量子电动力学效应。特别地，计算了20 <= n <= 60范围内所有循环态（l = n-1）的类氢单圈Bethe展开，并成功地与已有的大主量子数n的渐近展开进行了比较.我们提供准确的扩展的Bethe对数的大值n，S，P和圆形的里德伯态。这三个展开式可以在指定的原子态流形中，给出主量子数n > 20的任何贝特矩阵，精确到小数点后五到七位。在数值精度范围内，结果构成了统一的，通用的量子电动力学修正公式，其有效性不限于一个单一的原子状态。这些结果是相关的辐射位移的里德堡态的准确预测和最近研究的激光修饰的兰姆位移，这是观察到的强相干波光场的描述。
英文摘要：
We investigate relativistic and quantum electrodynamic effects for highly-excited bound states in hydrogenlike systems (Rydberg states). In particular, hydrogenic one-loop Bethe logarithms are calculated for all circular states (l = n-1) in the range 20 <= n <= 60 and successfully compared to an existing asymptotic expansion for large principal quantum number n. We provide accurate expansions of the Bethe logarithm for large values of n, for S, P and circular Rydberg states. These three expansions are expected to give any Bethe logarithms for principal quantum number n > 20 to an accuracy of five to seven decimal digits, within the specified manifolds of atomic states. Within the numerical accuracy, the results constitute unified, general formulas for quantum electrodynamic corrections whose validity is not restricted to a single atomic state. The results are relevant for accurate predictions of radiative shifts of Rydberg states and for the description of the recently investigated laser-dressed Lamb shift, which is observable in a strong coherent-wave light field.
Radiative lifetime measurements of rubidium Rydberg states
在28 < n < 45范围内测量了铷原子ns、np和nd里德堡态的辐射寿命。为了能够测量长寿命状态，我们的实验使用磁光阱（MOT）中缓慢移动的Rb原子。采用了两种实验技术来减小随机误差和系统误差。首先，使用窄带宽脉冲激光来激发目标里德堡态，从而在初始状态布居中产生最小的拍摄到拍摄的变化。第二，我们监测的目标状态人口作为从激光脉冲的时间延迟的函数，使用短的持续时间，毫米波脉冲是共振的单光子或双光子跃迁。然后，我们选择性地对监测状态进行场扫描，并用微通道板检测所产生的电子。该信号是目标状态布居的精确镜像，并且不受来自由黑体辐射布居的其它状态的贡献的污染。我们的研究结果与其他最近的实验结果使用一个不太敏感的方法得到的一般是一致的，也是在良好的协议与理论。
Combining experiments and relativistic theory for establishing accurate radiative quantities in atoms: the lifetime of the $^2$P$_{3/2}$ state in $^{40}$Ca$^+$
Relativistic ab initio study on the spectroscopic and radiative properties of the lowest states and modeling of the optical cycles for the LiFr molecule
