The process of the elastic scattering of photons on atoms, known as the Rayleigh scattering, is investigated. Expressing the scattering observables in terms of the electric and magnetic complex scattering amplitudes, we work over the scenarios for their independent benchmarking by experiments. In particular, the combination of the cross section and polarization transfer of initially linearly polarized light provides an opportunity for a complete experiment for any but fixed scattering angle. It allows us to deduce the modulus of the electric and magnetic amplitudes together with the phase difference individually. The findings are illustrated by the theoretical calculations of the scattering of 150 - 250 keV photons on lead atoms.
Vector polarizability of atomic state induced by a linearly polarized vortex beam: External control of magic, tune-out wavelengths, and heteronuclear spin oscillations
用涡旋光束进行的实验表明,人们对控制冷原子的兴趣激增。由于圆偏振光能在原子上产生矢量偏振,而傍轴线偏振光不可能产生矢量偏振,因此大多数控制方案都是由圆偏振光控制的。本文发展了一个原子态与聚焦线偏振涡旋光束相互作用的频率相关极化率理论。在这种类型的线偏振光束中自然诱导的自旋轨道耦合产生原子态的价极化率的矢量分量,服从光束的总角动量守恒。将该理论应用于$^{87}$ Sr $^{+}$离子,采用相对论耦合团簇方法精确计算了时钟跃迁的魔波长和时钟态的调谐波长。线偏振聚焦涡旋光束在动态极化率中的感应矢量分量将虚拟磁场提升到原子态。我们证明,这个虚拟的磁场,取决于光束的聚焦角和OAM,提高了灵活性的相干异质自旋振荡的自旋为1的混合物的$^{87}$ Rb和$^{23}$ Na原子。
Two-, three-, and four-photon ionization of Mg in the circularly and linearly polarized laser fields: Comparative study using the Hartree-Fock and model potentials
Bound-state Compton scattering of linearly polarized photons
Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collége de France(卡斯特勒·布罗塞尔实验室,索邦大学,法国国家科学研究中心,巴黎高等师范学院-巴黎文理研究大学,法兰西公学院);Max Planck Institute for Nuclear Physics(马克斯·普朗克核物理研究所);Physikalisch-Technische Bundesanstalt(德国联邦物理技术研究院);Institut für Mathematische Physik, Technische Universität Braunschweig(布伦瑞克工业大学数学物理研究所);GSI Helmholtzzentrum für Schwerionenforschung(德国重离子研究中心);Helmholtz Institute Jena(耶拿赫尔姆霍兹研究所);Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena(耶拿弗里德里希·席勒大学光学与量子电子学研究所);Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena(耶拿弗里德里希·席勒大学理论物理研究所)