https://doi.org/10.1140/epjp/s13360-026-07570-3
Regular Article
Birefringent rotary photon drag using structured light in a ladder-type chiral atomic medium
1
Lab of Theoretical Physics, Department of Physics, Hazara University, 21300, Mansehra, Pakistan
2
Central Research Laboratory, Hazara University, 21300, Mansehra, Pakistan
3
Quantum Optics and Quantum Information Research Group, Department of Physics, University of Malakand, 18800, Khyber Pakhtunkhwa, Pakistan
4
Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
a
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Received:
10
December
2025
Accepted:
12
March
2026
Published online:
26
March
2026
Abstract
The influence of four-coupled structured light fields on the birefringence of rotary photon drag (RPD) in a ladder-type chiral atomic medium drag is explored. Normal and anomalous RPD are observed in the right and left circularly polarized beams with drag angles of 
at clockwise and anticlockwise handedness. The helicity parameter is given as 
. The dependency of topological charges 
on birefringent beams is explored by utilizing Laguerre Gaussian field intensities. PPD of left and right circularly polarized beams show contrast behavior to each other. In the region of -3
, the maximum value of normal RPD reach 
radians, while the maximum value of anomalous RPD reach 
radians. Rotary photon drag is affected by the topological charges of Laguerre Gaussian field intensities. The number of RPD peaks are enhanced accordingly with 2l condition via increasing values of topological charges in the range of -3. For large values of topological charges 
, where 
, two to eight normal and anomalous RPD peaks are achieved. Our presented results may have potential uses in sensing and image coding and designing technologies.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
