论文标题
87RB D线矢量调节波长的测量
Measurement of the 87Rb D-line vector tune-out wavelength
论文作者
论文摘要
我们报告使用圆形极化光对87RB的调节波长进行精确测量。调节波长的特征是原子的电极化性零。对于循环极化的光，总极化率取决于标量和矢量极化分量。这改变了调节波长的位置，并使与单独标量极化性相比，它对原子偶极基质元素的不同组合敏感。使用$σ_- $偏振光，估计纯度为0.9931（1），我们观察到785.1522（3）nm的调节波长为785.1522（3）nm，当考虑到核心电子和异位价值状态的小贡献时，这与理论期望一致。
We report a precision measurement of a tune-out wavelength for 87Rb using circularly polarized light. A tune-out wavelength characterizes a zero in the electric polarizability of the atom. For circularly polarized light, the total polarizability depends on both the scalar and vector polarizability components. This shifts the location of the tune-out wavelength and makes it sensitive to different combinations of atomic dipole matrix elements than the scalar polarizability alone. Using $σ_-$ polarized light with an an estimated purity of 0.9931(1), we observe a tune-out wavelength of 785.1522(3) nm, which agrees with theoretical expectations when small contributions from the core electrons and off-resonant valence states are taken into account.
