On-chip ultra-compact hexagonal boron nitride topological ring-resonator in visible region
Abstract
Ultra-compact topological ring-resonators with chirality are important devices for quantum optics. However, there are limited demonstrations of chiral resonators, especially in the visible region. We proposed a topological photonic ring-resonator based on hexagonal boron nitride (hBN) valley photonic crystal (VPC). The spin-valley locking effect in VPC allows achieving robust unidirectional transmission of edge states in the visible region (600 nm-650 nm). As a result, a high quality factor (679.3) with a free spectral range of 15.2 nm in the visible region can be achieved in a hBN all-pass filter with a compact size. In addition, we investigated the transmission properties of hBN ring-resonators with different shapes and combinations, confirming the flexibility of designing topological ring-resonators based on this principle. This design can be readily integrated with quantum photonic chips for broad applications.
Keywords
Cite
@article{arxiv.2203.07602,
title = {On-chip ultra-compact hexagonal boron nitride topological ring-resonator in visible region},
author = {Min Wu and Yibiao Yang and Hongming Fei and Han Lin and Xiaodan Zhao and Lijuan Kang},
journal= {arXiv preprint arXiv:2203.07602},
year = {2022}
}
Comments
8 pages, 6 figures