Mach-Zehnder Interferometer for Topological Edge States Based on a Designer Domain Wall

Yandong Li; Minwoo Jung; Yang Yu; Yuchen Han; Baile Zhang; Gennady Shvets

doi:10.1364/CLEO_QELS.2022.FW5D.2

Conference on Lasers and Electro-Optics
Technical Digest Series (Optica Publishing Group, 2022),
paper FW5D.2
•https://doi.org/10.1364/CLEO_QELS.2022.FW5D.2

Mach-Zehnder Interferometer for Topological Edge States Based on a Designer Domain Wall

Yandong Li, Minwoo Jung, Yang Yu, Yuchen Han, Baile Zhang, and Gennady Shvets

CLEO: QELS_Fundamental Science 2022

San Jose, California United States
15–20 May 2022
ISBN: 978-1-957171-05-0

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Topological Photonics (FW5D)

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Y. Li, M. Jung, Y. Yu, Y. Han, B. Zhang, and G. Shvets, "Mach-Zehnder Interferometer for Topological Edge States Based on a Designer Domain Wall," in Conference on Lasers and Electro-Optics, Technical Digest Series (Optica Publishing Group, 2022), paper FW5D.2.

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Abstract

We experimentally demonstrate a tunable single-waveguide interferometer based on interfaces between photonic topological insulators. Tunability is achieved by engineering the domain wall without altering the bulk. Topological protection enables compactness and efficiency.

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