Generation of tunable optical skyrmions on Skyrme-Poincar\'e sphere
Abstract
In recent time, the optical-analogous skyrmions, topological quasiparticles with sophisticated vectorial structures, have received an increasing amount of interest. Here we propose theortically and experimentally a generalized family of these, the tunable optical skyrmion, unveiling a new mechanism to transform between various skyrmionic topologies, including N\'eel-, Bloch-, and antiskyrmion types, via simple parametric tuning. In addition, Poincar\'e-like geometric representation is proposed to visualize the topological evolution of tunable skyrmions, which we termed Skyrme-Poincar\'e sphere, akin to the spin-orbit representation of complex vector modes. To generate experimentally the tunable optical skyrmions we implemented a digital hologram system based on a spatial light modulator, showing great agreement with our theoretical prediction.
Keywords
Cite
@article{arxiv.2107.04394,
title = {Generation of tunable optical skyrmions on Skyrme-Poincar\'e sphere},
author = {Yijie Shen and Eduardo Casas Martínez and Carmelo Rosales-Guzmán},
journal= {arXiv preprint arXiv:2107.04394},
year = {2022}
}