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Two-dimensionally confined topological edge states in photonic crystals

TitleTwo-dimensionally confined topological edge states in photonic crystals
Publication TypeJournal Article
Year of Publication2016
AuthorsS. Barik, H. Miyake, W. DeGottardi, E. Waks, and M. Hafezi
JournalNEW JOURNAL OF PHYSICS
Volume18
Pagination113013
Date PublishedNOV 7
ISSN1367-2630
Abstract

We present an all-dielectric photonic crystal structure that supports two-dimensionally confined helical topological edge states. The topological properties of the system are controlled by the crystal parameters. An interface between two regions of differing band topologies gives rise to topological edge states confined in a dielectric slab that propagate around sharp corners without backscattering. Three-dimensional finite-difference time-domain calculations show these edges to be confined in the out-of-plane direction by total internal reflection. Such nanoscale photonic crystal architectures could enable strong interactions between photonic edge states and quantum emitters.

DOI10.1088/1367-2630/18/11/113013