Topological beaming of light: Proof-of-concept experiment
Abstract
Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles. We observe the emergence of Jackiw-Rebbi states and confirm their localized characteristics. Notably, we achieve a flat-top beam profile by carefully tailoring the Dirac mass distribution, highlighting the potential of this method for customized beam shaping. This experimental realization establishes our approach as a new mechanism for beam control, rooted in topological physics, and offers an efficient strategy for nanophotonic design.
Keywords
Cite
@article{arxiv.2410.04806,
title = {Topological beaming of light: Proof-of-concept experiment},
author = {Yu Sung Choi and Ki Young Lee and Soo-Chan An and Minchul Jang and Youngjae Kim and Seung Han Shin and Jae Woong Yoon},
journal= {arXiv preprint arXiv:2410.04806},
year = {2024}
}