Symmetry-protected topological exceptional chain

Xiaohan Cui; Ruo Yang Zhang; Guancong Ma; C. T. Chan

Symmetry-protected topological exceptional chain

Xiaohan Cui, Ruo Yang Zhang, Guancong Ma, C. T. Chan^*

^*Corresponding author for this work

Department of Physics

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

Abstract

We studied the exceptional chains (ECs) in non-Hermitian systems and the symmetries that secure their stability. By assigning orientations to exceptional lines (ELs), we analyzed the robustness of ECs via establishing a source-free principle for ELs. The principle leads to the discovery of three mechanisms for stabilizing the junction of ELs. The observation of these exotic ECs is demonstrated through numerical simulations in photonic crystals and experimental observations in coupled active oscillators.

Original language	English
Title of host publication	META 2023 Paris - France
Subtitle of host publication	The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Proceedings
Editors	Philippe Lalanne, Said Zouhdi
Publisher	META Conference
Pages	1156
Number of pages	1
Publication status	Published - 18 Jul 2023
Event	13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023 - Paris, France Duration: 18 Jul 2023 → 21 Jul 2023 https://metaconferences.org/META23/files/meta23_proceedings.pdf

Publication series

Name	International Conference on Metamaterials, Photonic Crystals and Plasmonics
ISSN (Print)	2429-1390

Conference

Conference	13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023
Country/Territory	France
City	Paris
Period	18/07/23 → 21/07/23
Internet address	https://metaconferences.org/META23/files/meta23_proceedings.pdf

Scopus Subject Areas

Electrical and Electronic Engineering
Materials Science (miscellaneous)
Electronic, Optical and Magnetic Materials
Materials Chemistry

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https://metaconferences.org/META23/files/meta23_proceedings.pdf

Cite this

Cui, X., Zhang, R. Y., Ma, G., & Chan, C. T. (2023). Symmetry-protected topological exceptional chain. In P. Lalanne, & S. Zouhdi (Eds.), META 2023 Paris - France: The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Proceedings (pp. 1156). (International Conference on Metamaterials, Photonic Crystals and Plasmonics). META Conference. https://metaconferences.org/META23/files/meta23_proceedings.pdf

Cui, Xiaohan ; Zhang, Ruo Yang ; Ma, Guancong et al. / Symmetry-protected topological exceptional chain. META 2023 Paris - France: The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Proceedings. editor / Philippe Lalanne ; Said Zouhdi. META Conference, 2023. pp. 1156 (International Conference on Metamaterials, Photonic Crystals and Plasmonics).

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title = "Symmetry-protected topological exceptional chain",

abstract = "We studied the exceptional chains (ECs) in non-Hermitian systems and the symmetries that secure their stability. By assigning orientations to exceptional lines (ELs), we analyzed the robustness of ECs via establishing a source-free principle for ELs. The principle leads to the discovery of three mechanisms for stabilizing the junction of ELs. The observation of these exotic ECs is demonstrated through numerical simulations in photonic crystals and experimental observations in coupled active oscillators.",

author = "Xiaohan Cui and Zhang, {Ruo Yang} and Guancong Ma and Chan, {C. T.}",

note = "We acknowledge support from Research Grants Council (RGC) Hong Kong and the Croucher Foundation. Publisher Copyright: {\textcopyright} 2023, META Conference. All rights reserved.; 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023 ; Conference date: 18-07-2023 Through 21-07-2023",

year = "2023",

month = jul,

day = "18",

language = "English",

series = "International Conference on Metamaterials, Photonic Crystals and Plasmonics",

publisher = "META Conference",

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Cui, X, Zhang, RY, Ma, G & Chan, CT 2023, Symmetry-protected topological exceptional chain. in P Lalanne & S Zouhdi (eds), META 2023 Paris - France: The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Proceedings. International Conference on Metamaterials, Photonic Crystals and Plasmonics, META Conference, pp. 1156, 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023, Paris, France, 18/07/23. <https://metaconferences.org/META23/files/meta23_proceedings.pdf>

Symmetry-protected topological exceptional chain. / Cui, Xiaohan; Zhang, Ruo Yang; Ma, Guancong et al.
META 2023 Paris - France: The 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Proceedings. ed. / Philippe Lalanne; Said Zouhdi. META Conference, 2023. p. 1156 (International Conference on Metamaterials, Photonic Crystals and Plasmonics).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

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AU - Zhang, Ruo Yang

AU - Ma, Guancong

AU - Chan, C. T.

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N2 - We studied the exceptional chains (ECs) in non-Hermitian systems and the symmetries that secure their stability. By assigning orientations to exceptional lines (ELs), we analyzed the robustness of ECs via establishing a source-free principle for ELs. The principle leads to the discovery of three mechanisms for stabilizing the junction of ELs. The observation of these exotic ECs is demonstrated through numerical simulations in photonic crystals and experimental observations in coupled active oscillators.

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BT - META 2023 Paris - France

A2 - Lalanne, Philippe

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Y2 - 18 July 2023 through 21 July 2023

ER -

Symmetry-protected topological exceptional chain

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