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Updated: Jan 8, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
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Photonic Shankar Skyrmion
1Stanford University, Department of Applied Physics, Stanford, California 94305, USA.
Physical Review Letters
|December 19, 2025
Summary
We discovered a new light quasiparticle, the photonic Shankar skyrmion, in 3D space. This topological entity, formed by elliptically polarized light, has potential applications in quantum emulation and optical manipulation.
Area of Science:
- Optics and Photonics
- Condensed Matter Physics
- Quantum Information Science
Background:
- Topological phenomena in physics offer unique properties.
- Skyrmions are particle-like topological solitons with applications in magnetism.
- Understanding light's topological properties is crucial for novel optical phenomena.
Purpose of the Study:
- To introduce and characterize a new topological quasiparticle of light in 3D space.
- To explore the formation and properties of the photonic Shankar skyrmion.
- To investigate potential applications in quantum emulation and optical manipulation.
Main Methods:
- Describing elliptically polarized light using an SO(3) order parameter.
- Classifying light textures in 3D space using homotopy theory (π3[SO(3)]).
- Constructing photonic Shankar skyrmions in static and propagating light waves.
Main Results:
- Unveiled the photonic Shankar skyrmion, a novel topological quasiparticle of light.
- Demonstrated construction in both static monochromatic waves and dynamic wave packets.
- Identified a new topological singularity, the L^T surface, at topological transitions.
Conclusions:
- The photonic Shankar skyrmion represents a new class of topological quasiparticles.
- These findings open avenues for new phenomena in light-matter interactions.
- Potential applications in quantum emulation and advanced optical manipulation are highlighted.
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