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Topological optical skyrmion transfer to matter

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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  • Chirantan Mitra
  • Chetan Sriram Madasu
  • Lucas Gabardos
  • Chang Chi Kwong
  • Yijie Shen
  • Janne Ruostekoski
  • David Wilkowski
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Article number046113
<mark>Journal publication date</mark>16/04/2025
<mark>Journal</mark>APL Photonics
Issue number4
Volume10
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The ability of structured light to mimic exotic topological skyrmion textures encountered in high-energy physics, cosmology, magnetic materials, and superfluids has recently received considerable attention. Despite their promise as mechanisms for data encoding and storage, there has been a lack of studies addressing the transfer and storage of the topology of optical skyrmions to matter. Here, we demonstrate a high-fidelity mapping of skyrmion topology from a laser beam onto a gas of cold atoms, where it is detected in its new non-propagating form. Within the spatial overlap of the beam and atom cloud, the skyrmion topological charge is preserved, with a reduction from Q ≃ 0.91 to Q ≃ 0.84, mainly due to the beam width exceeding the sample size. Our work potentially opens novel avenues for topological photonic state storage and the analysis of more complex structured light topologies.