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arXiv · 2406.06096

Space-Time Hopfion Crystals

Wenbo Lin·Nilo Mata-Cervera·Yasutomo Ota·Yijie Shen·Satoshi Iwamoto
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Abstract

Hopfions, higher-dimensional topological quasiparticles with sophisticated 3D knotted spin textures discovered in condensed matter and photonic systems, show promise in high-density data storage and transfer. Here we present crystalline structures of hopfions lying in space-time constructed by spatiotemporally structured light. A practical methodology using bichromatic structured light beams or dipole arrays to assemble 1D and higher dimensional hopfion lattices is proposed and a technique for tailoring topological orders is elucidated. The birth of photonic hopfion crystals heralds a new era in high-dimensional, condensed, and robust topological information processing.

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Wenbo Lin, Nilo Mata-Cervera, Yasutomo Ota, Yijie Shen, Satoshi Iwamoto. 2024-06-10. Space-Time Hopfion Crystals. https://doi.org/10.1103/hh5s-cprt

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