Abstract
Photons carrying a well-defined orbital angular momentum have been proven to modify spectroscopic selection rules in atomic matter. Excitation profiles of electric quadrupole transitions have been measured with single trapped ions for varying polarizations. We further develop the photo-absorption formalism to study the case of arbitrary alignment of the beam’s optical axis with respect to the ion’s quantization axis and mixed multipolarity. Thus, predictions for -dominated , E3-driven and , and B-like are presented. The latter case displays novel effects, coming from the presence of a strong photon–magnetic dipole coupling.
© 2019 Optical Society of America
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