Angular momentum-dependent topological transport and its experimental realization using a transmission line network
Mesoscale and Nanoscale Physics
2018-08-17 v1 Optics
Abstract
Novel classical wave phenomenon analogs of the quantum spin Hall effect are mostly based on the construction of pseudo-spins. Here we show that the non-trivial topology of a system can also be realized using orbital angular momentum through angular-momentum-orbital coupling. The idea is illustrated with a tight-binding model and experimentally demonstrated with a transmission line network. We show experimentally that even a very small network cluster exhibits one-way topological edge states, and their properties can be described in terms of local Chern numbers. Our work provides a new mechanism to realize counterparts of the quantum spin Hall effect in classical waves and may offer insights for other systems.
Cite
@article{arxiv.1808.05413,
title = {Angular momentum-dependent topological transport and its experimental realization using a transmission line network},
author = {Tianshu Jiang and Meng Xiao and Wenjie Chen and Lechen Yang and Yawen Fang and Wing Yim Tam and C. T. Chan},
journal= {arXiv preprint arXiv:1808.05413},
year = {2018}
}