@inproceedings{f0f17bee3b914eebb6268c674560001d,
title = "Experimental observation of topologically protected bound states in two dimensional quantum walk",
abstract = "Quantum walks (QWs) provide a powerful tool as a quantum simulator to study topological phases. However, some interesting topological phenomena in the two dimensional (2D) QW that do not exist in the one dimensional case, e.g., the edge-state-enhanced transport, have not been demonstrated experimentally. Here we have observed 2D topological bound states with vanishing Chern numbers and confirmed the robustness of these bound states with respect to perturbations and disorder, which go beyond what has been known in static systems and are unique to periodically driven systems. Our studies open up an avenue to explore topological properties in multidimensional QWs.",
keywords = "robustness, topologically protected states, two-dimensional quantum walks",
author = "Bo Wang and Tian Chen and Xiangdong Zhang",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Applied Optics and Photonics China 2019: Quantum Information Technology, AOPC 2019 ; Conference date: 07-07-2019 Through 09-07-2019",
year = "2019",
doi = "10.1117/12.2547467",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jianyu Wang and Chaoyang Lu and Sven Hofling",
booktitle = "AOPC 2019",
address = "United States",
}