Direct observation of the optical Magnus effect with a trapped ion
Abstract
We directly observe and spatially map an optical analog of the Magnus effect, where intrinsic spin-orbit-like coupling of light generates a spin-dependent transverse displacement of the atom-light interaction profile for a Ca ion. Probed on a quadrupole transition using a tightly focused beam, we observe displacements of the maximum in the profile of the effective interaction by several 100 nm originating from intrinsic longitudinal electric field components beyond the paraxial approximation. The tight focus of the beam induces additional transverse polarization gradients, which we characterize through a phase-sensitive measurement and spatial maps for different beam configurations. The results establish the physical basis of polarization-gradient interactions relevant to optical tweezer-based quantum control.
Keywords
Cite
@article{arxiv.2601.22981,
title = {Direct observation of the optical Magnus effect with a trapped ion},
author = {Philip Leindecker and Louis P. H. Gallagher and Edgar Brucke and Dominique Zehnder and Luka Milanovic and Matteo Marinelli and Rene Gerritsma and Robert J. C. Spreeuw and Jonathan Home and Cornelius Hempel},
journal= {arXiv preprint arXiv:2601.22981},
year = {2026}
}
Comments
5 pages in the main text (4 figures); 8 pages total (6 figures)