Magnetic Chiral Light
Abstract
We present a result derived from the optical chirality continuity equation that shows the existence of a source term describing optical chirality generation through the interactions of the magnetic induction field with a source current, without contributions from the electric field. This framework is validated through a metasurface-based methodology. Using a lossless, all-dielectric nanoparticle array, we engineer an in-plane rotating electric field that generates out-of-plane optical magnetism. This array exhibits a far-field circular dichroism of 0.47 and a high-quality factor on the order of 10^6. The presented findings demonstrate the feasibility of inducing chiral optical responses from a magnetic source. This work establishes a new paradigm for structured photonic media, offering insights into the design of nanophotonic devices that exploit optical magnetism for chiral light-matter interactions.
Cite
@article{arxiv.2508.15803,
title = {Magnetic Chiral Light},
author = {Zaid Haddadin and Lukas Novotny and Lisa V. Poulikakos},
journal= {arXiv preprint arXiv:2508.15803},
year = {2025}
}
Comments
This is an unedited version of a work being submitted for publication, with 49 pages (18 main text, 31 supplemental document), 29 figures (7 main text, 22 supplemental document), and 11 tables (all supplemental document). Dataset files are not with the arXiv submission