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Title: Probing topological protection using a designer surface plasmon structure

Abstract

Topological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated in a few photonic systems, including an array of coupled on-chip ring resonators at communication wavelengths. However, the intrinsic difference between electrons and photons determines that the 'topological protection' in time-reversal-invariant photonic systems does not share the same robustness as its counterpart in electronic topological insulators. Here in a designer surface plasmon platform consisting of tunable metallic sub-wavelength structures, we construct photonic topological edge states and probe their robustness against a variety of defect classes, including some common time-reversal-invariant photonic defects that can break the topological protection, but do not exist in electronic topological insulators. Furthermore, this is also an experimental realization of anomalous Floquet topological edge states, whose topological phase cannot be predicted by the usual Chern number topological invariants.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [3];  [3];  [4];  [5];  [6];  [7]
  1. Nanyang Technological Univ., Nanyang Link, (Singapore, Republic of). Div. of Physics and Applied Physics, School of Physical and Mathematical Sciences
  2. Nanyang Technological Univ., Nanyang Link, (Singapore, Republic of). Div. of Physics and Applied Physics, School of Physical and Mathematical Sciences; Zhejiang Univ., Hangzhou (China). State Key Laboratory of Modern Optical Instrumentation
  3. Massachusetts Inst. of Technology, Cambridge, MA (United States). Dept. of Physics
  4. Zhejiang Univ., Hangzhou (China). State Key Laboratory of Modern Optical Instrumentation; Massachusetts Inst. of Technology, Cambridge, MA (United States). Dept. of Physics
  5. Massachusetts Inst. of Technology, Cambridge, MA (United States). Dept. of Physics; Chinese Academy of Sciences, Beijing (China). Beijing National Laboratory for Condensed Matter Physics, Inst. of Physics
  6. Nanyang Technological Univ., Nanyang Link, (Singapore, Republic of). Div. of Physics and Applied Physics, School of Physical and Mathematical Sciences,Centre for Disruptive Photonic Technologies
  7. Nanyang Technological Univ., Nanyang Link, (Singapore, Republic of). Div. of Physics and Applied Physics, School of Physical and Mathematical Sciences, Centre for Disruptive Photonic Technologies
Publication Date:
Research Org.:
Nanyang Technological Univ. (Singapore, Republic of); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22) MIT S3TEC EFRC
OSTI Identifier:
1270875
Grant/Contract Number:  
SC0001299
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; insulators; photonics; states

Citation Formats

Gao, Fei, Gao, Zhen, Shi, Xihang, Yang, Zhaoju, Lin, Xiao, Xu, Hongyi, Joannopoulos, John D., Soljacic, Marin, Chen, Hongsheng, Lu, Ling, Chong, Yidong, and Zhang, Baile. Probing topological protection using a designer surface plasmon structure. United States: N. p., 2016. Web. doi:10.1038/ncomms11619.
Gao, Fei, Gao, Zhen, Shi, Xihang, Yang, Zhaoju, Lin, Xiao, Xu, Hongyi, Joannopoulos, John D., Soljacic, Marin, Chen, Hongsheng, Lu, Ling, Chong, Yidong, & Zhang, Baile. Probing topological protection using a designer surface plasmon structure. United States. doi:10.1038/ncomms11619.
Gao, Fei, Gao, Zhen, Shi, Xihang, Yang, Zhaoju, Lin, Xiao, Xu, Hongyi, Joannopoulos, John D., Soljacic, Marin, Chen, Hongsheng, Lu, Ling, Chong, Yidong, and Zhang, Baile. Fri . "Probing topological protection using a designer surface plasmon structure". United States. doi:10.1038/ncomms11619. https://www.osti.gov/servlets/purl/1270875.
@article{osti_1270875,
title = {Probing topological protection using a designer surface plasmon structure},
author = {Gao, Fei and Gao, Zhen and Shi, Xihang and Yang, Zhaoju and Lin, Xiao and Xu, Hongyi and Joannopoulos, John D. and Soljacic, Marin and Chen, Hongsheng and Lu, Ling and Chong, Yidong and Zhang, Baile},
abstractNote = {Topological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated in a few photonic systems, including an array of coupled on-chip ring resonators at communication wavelengths. However, the intrinsic difference between electrons and photons determines that the 'topological protection' in time-reversal-invariant photonic systems does not share the same robustness as its counterpart in electronic topological insulators. Here in a designer surface plasmon platform consisting of tunable metallic sub-wavelength structures, we construct photonic topological edge states and probe their robustness against a variety of defect classes, including some common time-reversal-invariant photonic defects that can break the topological protection, but do not exist in electronic topological insulators. Furthermore, this is also an experimental realization of anomalous Floquet topological edge states, whose topological phase cannot be predicted by the usual Chern number topological invariants.},
doi = {10.1038/ncomms11619},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {2016},
month = {5}
}

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    Works referencing / citing this record:

    Effective Surface Plasmon Polaritons Induced by Modal Dispersion in a Waveguide
    journal, April 2017


    Surface-Wave Pulse Routing around Sharp Right Angles
    journal, April 2018


    Observing the transient buildup of a superscatterer in the time domain
    journal, January 2017


    Applications of Topological Photonics in Integrated Photonic Devices
    journal, August 2017