Physical conversion and superposition of optical skyrmion topologies  

作　　者：HOUAN TENG JINZHAN ZHONG JIAN CHEN XINRUI LEI QIWEN ZHAN 

机构地区：[1]School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China [2]Zhangjiang Laboratory,Shanghai 201204,China

出　　处：《Photonics Research》2023年第12期2042-2053,共12页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(92050202,12204309);Shanghai Rising-Star Program(22YF1415200,23YF1415800)。

摘　　要：Optical skyrmions are quasiparticles with nontrivial topological textures that have significant potential in optical information processing,transmission,and storage.Here,we theoretically and experimentally achieve the conversion of optical skyrmions among Néel,Bloch,intermediate skyrmions,and bimerons by polarization devices,where the fusion and annihilation of optical skyrmions are demonstrated accordingly.By analyzing the polarization pattern in Poincarébeams,we reveal the skyrmion topology dependence on the device,which provides a pathway for the study of skyrmion interactions.A vectorial optical field generator is implemented to realize the conversion and superposition experimentally,and the results are in good agreement with the theoretical predictions.These results enhance our comprehension of optical topological quasiparticles,which could have a significant impact on the transfer,storage,and communication of optical information.

关 键 词：POINCARÉ SUPERPOSITION TOPOLOGICAL 

分 类 号：O43[机械工程—光学工程]