Controllable creation of topological boundary states in topological-insulator-based Josephson corner junctions
Abstract
Majorana zero modes (MZMs) in condensed matter systems have attracted great attention in the past two decades, due to their interesting physics and potential application in topological quantum computing (TQC). However, the topologically protected nature of MZMs still need more experimental verifications. In this study, we have realized controllable creation of a topological boundary state at the corner of topological insulator (TI)-based Josephson corner junctions. This state demonstrates protected existence across a broad region in parametric space, and exhibits a non-2{\pi}-period but 4{\pi}-period-compatible energy-phase relation. Our study suggests that TI-based Josephson junctions, as proposed in the Fu-Kane scheme of TQC, may provide a promising platform for hosting and braiding MZMs.
Keywords
Cite
@article{arxiv.2505.08290,
title = {Controllable creation of topological boundary states in topological-insulator-based Josephson corner junctions},
author = {Xiang Wang and Duolin Wang and Yunxiao Zhang and Xiaozhou Yang and Yukun Shi and Bing Li and Enna Zhuo and Yuyang Huang and Anqi Wang and Zhaozheng Lyu and Xiaohui Song and Peiling Li and Bingbing Tong and Ziwei Dou and Jie Shen and Guangtong Liu and Fanming Qu and Li Lu},
journal= {arXiv preprint arXiv:2505.08290},
year = {2025}
}
Comments
5 pages, 4 figures