6533b827fe1ef96bd1285cf1
RESEARCH PRODUCT
Excitation of E1-forbidden Atomic Transitions with Electric, Magnetic or Mixed Multipolarity in Light Fields Carrying Orbital and Spin Angular Momentum
Maria Solyanik-gorgoneCarl E. CarlsonFerdinand Schmidt-kalerChristian Tomás SchmiegelowAndrei Afanasevsubject
PhysicsAngular momentumQuantum PhysicsPhotonFOS: Physical sciencesStatistical and Nonlinear Physics01 natural sciencesAtomic and Molecular Physics and OpticsMagnetic field010309 opticsQuantization (physics)0103 physical sciencesQuadrupoleLight beamAtomic physicsQuantum Physics (quant-ph)Optical vortexExcitationdescription
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 $^{40}$Ca$^+$ 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 M1-dominated $^{40}Ar^{13+}$, E3-driven $^{171}Yb^+$ and $^{172}Yb^+$, and B-like $^{20}Ne^{5+}$ are presented. The latter case displays novel effects, coming from the presence of a strong photon -- magnetic dipole coupling.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-07 |