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18 December 2019 Experimental observation of topologically protected bound states in two dimensional quantum walk
Bo Wang, Tian Chen, Xiangdong Zhang
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Proceedings Volume 11339, AOPC 2019: Quantum Information Technology; 113390E (2019) https://doi.org/10.1117/12.2547467
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China
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.
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Bo Wang, Tian Chen, and Xiangdong Zhang "Experimental observation of topologically protected bound states in two dimensional quantum walk", Proc. SPIE 11339, AOPC 2019: Quantum Information Technology, 113390E (18 December 2019); https://doi.org/10.1117/12.2547467
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KEYWORDS
Quantum physics
Physics
Single photon
Modulation
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