More than just a name?From magnetic to optical skyrmions and the topology of light  

作　　者：Jian Chen Andrew Forbes Cheng-Wei Qiu 

机构地区：[1]School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China [2]Department of Electrical and Computer Engineering,National University of Singapore,Singapore,117583,Singapore [3]School of Physics,University of the Witwatersrand,Johannesburg,South Africa

出　　处：《Light(Science & Applications)》2025年第1期26-29,共4页光(科学与应用)(英文版)

基　　金：Support from grants 12274299,92050202 and 22QA1406600 are gratefully acknowledged.

摘　　要：Topology is usually perceived intrinsically immutable for a given object.We argue that optical topologies do not immediately enjoy such benefits.Using'optical skyrmions'as an example,we show that they will exhibit varying textures and topological invariants(skyrmion numbers),depending on how to construct the skyrmion vector when projecting from real to parameter space.We demonstrate the fragility of optical skyrmions under a ubiquitous scenario-simple reflection off an optical mirror.Optical topology is not without benefit,but it must not be assumed.

关 键 词：numbers) space. TOPOLOGY 

分 类 号：O41[理学—理论物理]