Dynamical polarizability of atoms in arbitrary light fields: general theory and application to cesium

TL;DR

This paper develops a comprehensive theoretical framework for calculating the dynamical polarizability and ac Stark shifts of atoms in arbitrary light fields, with specific application to cesium's scalar, vector, and tensor polarizabilities.

Contribution

It provides a systematic derivation of atomic polarizabilities for arbitrary light polarization and applies it to cesium, including analysis of the fictitious magnetic field effects.

Findings

Calculated scalar, vector, and tensor polarizabilities of cesium.

Analyzed the fictitious magnetic field effects due to vector polarizability.

Provided resonance wavelengths and transition data for cesium.

Abstract

We present a systematic derivation of the dynamical polarizability and the ac Stark shift of the ground and excited states of atoms interacting with a far-off-resonance light field of arbitrary polarization. We calculate the scalar, vector, and tensor polarizabilities of atomic cesium using resonance wavelengths and reduced matrix elements for a large number of transitions. We analyze the properties of the fictitious magnetic field produced by the vector polarizability in conjunction with the ellipticity of the polarization of the light field.