Photonic Shankar skyrmion
arXiv:2508.11984 · doi:10.1103/lhxc-1z9c
Abstract
We unveil a new topological quasiparticle of light in 3D space, named the photonic Shankar skyrmion. We show that an elliptically polarized field can be described by an SO(3) order parameter and it can form a texture in 3D space classified by the homotopy group, known as the Shankar skyrmion. We provide ways to construct the photonic Shankar skyrmion in static monochromatic waves and also in propagating wavepackets, the latter give rise to a flying topological quasiparticle. We demonstrate that the transition between the topological configuration and the trivial configuration gives rise to a novel topological singularity, which we call the surface. Such configurations of the electromagnetic field, under light-matter interaction, may lead to new phenomena in condensed matter physics and plasma physics, and are expected to find applications in quantum emulation and optical manipulation.
16 pages, 4 figures
References in corpus (41)
- Skyrmion Lattice in a Chiral Magnet
- Control of valley polarization in monolayer MoS2 by optical helicity
- Light-induced gauge fields for ultracold atoms
- Transverse and longitudinal angular momenta of light
- Light-induced anomalous Hall effect in graphene
- Quantized circular photogalvanic effect in Weyl semimetals
- Knots and Particles
- Optical skyrmions in evanescent electromagnetic fields
- Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum
- Optical skyrmions and other topological quasiparticles of light
- Diffraction-free space-time beams
- Observation of Dirac Monopoles in a Synthetic Magnetic Field
- Measuring the Transverse Spin Density of Light
- Creating vortex rings and three-dimensional skyrmions in Bose-Einstein condensates
- Creation and confirmation of Hopfions in magnetic multilayer systems
- Particle-like topologies in light
- Supertoroidal light pulses: Propagating electromagnetic skyrmions in free space
- Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
- Photonic spin lattices: symmetry constraints for skyrmion and meron topologies
- Current-Driven Dynamics of Magnetic Hopfions
- Geometric phases in 2D and 3D polarized fields: geometrical, dynamical, and topological aspects
- Three-dimensional crystals of adaptive knots
- Energetically stable particle-like Skyrmions in a trapped Bose-Einstein condensate
- Topological Transformation and Free-Space Transport of Photonic Hopfions
- Creation of Dirac monopoles in spinor Bose-Einstein condensates
- Anomalous refraction of optical space-time wave packets
- Review: Topology of solitons and singular defects in chiral liquid crystals
- Force and torque on an electric dipole by spinning light fields
- Knots in the Skyrme-Faddeev model
- Angular momentum of non-paraxial light beam: Dependence of orbital angular momentum on polarization
- Optical Mobius Strips in Three Dimensional Ellipse Fields: Lines of Circular Polarization
- Water-Wave Vortices and Skyrmions
- Dynamical control of topology in ferroelectric skyrmions via twisted light
- Optical excitations of Skyrmions, knotted solitons, and defects in atoms
- Spin and Orbital Angular Momenta of Electromagnetic Waves in Free Space
- Photonic torons, topological phase transition and tunable spin monopoles
- Space-Time Hopfion Crystals
- Formation and Controlling of Optical Hopfions in High Harmonic Generation
- Hydrodynamics of three-dimensional skyrmions in frustrated magnets
- Topological solitonic macromolecules
- Relativistic transformations of quasi-monochromatic optical beams