Quadrupole excitation of atoms with tightly focused Laguerre-Gaussian beams

This article investigates the quadrupole excitation of a trapped atom exposed to the tightly focused Laguerre-Gaussian (LG) beams with parallel and antiparallel spin angular momentum (SAM) and orbital angular momentum (OAM) under nonparaxial conditions. The Rabi frequency profile of allowed quadrupo...

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Bibliographic Details
Published inOptics express Vol. 32; no. 7; pp. 12127 - 12140
Main Authors Mashhadi, Leila, Shayeganrad, Gholamreza
Format Journal Article
LanguageEnglish
Published United States 25.03.2024
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Summary:This article investigates the quadrupole excitation of a trapped atom exposed to the tightly focused Laguerre-Gaussian (LG) beams with parallel and antiparallel spin angular momentum (SAM) and orbital angular momentum (OAM) under nonparaxial conditions. The Rabi frequency profile of allowed quadrupole transition channels, modified by SAM and OAM interaction, in the focal plane is provided. In the case of antiparallel SAM and OAM, the excitation probability undergoes substantial modification due to the considerable contribution of longitudinal intensity variations in tightly focused condition. The findings offer insights into controlling localized atom transition, including OAM transfer, with potential applications in qudit-based technologies.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.500848