Topological Anderson insulator in disordered photonic crystals
Recent studies have revealed the counterintuitive possibility that increasing disorder can turn a topologically trivial insulator into a nontrivial insulator, called a topological Anderson insulator (TAI). Here, we propose and experimentally demonstrate a photonic TAI in a two-dimensional disordered...
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sg-ntu-dr.10356-1451682023-02-28T20:03:01Z Topological Anderson insulator in disordered photonic crystals Liu, Gui-Geng Yang, Yihao Ren, Xin Xue, Haoran Lin, Xiao Hu, Yuan-Hang Sun, Hong-xiang Peng, Bo Zhou, Peiheng Chong, Yidong Zhang, Baile School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) The Photonics Institute Science::Physics Anderson Insulator Photonic Crystals Recent studies have revealed the counterintuitive possibility that increasing disorder can turn a topologically trivial insulator into a nontrivial insulator, called a topological Anderson insulator (TAI). Here, we propose and experimentally demonstrate a photonic TAI in a two-dimensional disordered gyromagnetic photonic crystal in the microwave regime. We directly observe the disorder-induced topological phase transition from a trivial insulator to a TAI with robust chiral edge states. We also demonstrate topological heterostructures that host edge states at interfaces between domains with different disorder parameters. Ministry of Education (MOE) Published version The authors thank Professor Terry Loring for helpful discussions. This work was sponsored by the Singapore Ministry of Education under Grants No. MOE2016-T3-1- 006, No. MOE2018-T2-1-022 (S), Tier 1 RG187/18, and by National Key Research and Development Program of China under Grant No. 2016YFB1200100, and by the program of China Scholarships Council under Grant No. 201806075001, and by the National Natural Science Foundation of China under Grant No. 11774137, and by State Key Laboratory of Acoustics, Chinese Academy of Science under Grant No. SKLA202016. 2020-12-14T08:48:38Z 2020-12-14T08:48:38Z 2020 Journal Article Liu, G.-G., Yang, Y., Ren, X., Xue, H., Lin, X., Hu, Y.-H., . . . Zhang, B. (2020). Topological Anderson insulator in disordered photonic crystals. Physical Review Letters, 125(13), 133603-. doi:10.1103/PhysRevLett.125.133603 0031-9007 https://hdl.handle.net/10356/145168 10.1103/PhysRevLett.125.133603 33034499 13 125 en MOE2016-T3-1-006 MOE2018-T2-1-022 RG187/18 Physical Review Letters 10.21979/N9/R5PIL8 © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf |
| institution |
Nanyang Technological University |
| building |
NTU Library |
| continent |
Asia |
| country |
Singapore Singapore |
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NTU Library |
| collection |
DR-NTU |
| language |
English |
| topic |
Science::Physics Anderson Insulator Photonic Crystals |
| spellingShingle |
Science::Physics Anderson Insulator Photonic Crystals Liu, Gui-Geng Yang, Yihao Ren, Xin Xue, Haoran Lin, Xiao Hu, Yuan-Hang Sun, Hong-xiang Peng, Bo Zhou, Peiheng Chong, Yidong Zhang, Baile Topological Anderson insulator in disordered photonic crystals |
| description |
Recent studies have revealed the counterintuitive possibility that increasing disorder can turn a topologically trivial insulator into a nontrivial insulator, called a topological Anderson insulator (TAI). Here, we propose and experimentally demonstrate a photonic TAI in a two-dimensional disordered gyromagnetic photonic crystal in the microwave regime. We directly observe the disorder-induced topological phase transition from a trivial insulator to a TAI with robust chiral edge states. We also demonstrate topological heterostructures that host edge states at interfaces between domains with different disorder parameters. |
| author2 |
School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Liu, Gui-Geng Yang, Yihao Ren, Xin Xue, Haoran Lin, Xiao Hu, Yuan-Hang Sun, Hong-xiang Peng, Bo Zhou, Peiheng Chong, Yidong Zhang, Baile |
| format |
Article |
| author |
Liu, Gui-Geng Yang, Yihao Ren, Xin Xue, Haoran Lin, Xiao Hu, Yuan-Hang Sun, Hong-xiang Peng, Bo Zhou, Peiheng Chong, Yidong Zhang, Baile |
| author_sort |
Liu, Gui-Geng |
| title |
Topological Anderson insulator in disordered photonic crystals |
| title_short |
Topological Anderson insulator in disordered photonic crystals |
| title_full |
Topological Anderson insulator in disordered photonic crystals |
| title_fullStr |
Topological Anderson insulator in disordered photonic crystals |
| title_full_unstemmed |
Topological Anderson insulator in disordered photonic crystals |
| title_sort |
topological anderson insulator in disordered photonic crystals |
| publishDate |
2020 |
| url |
https://hdl.handle.net/10356/145168 |
| _version_ |
1759855374565900288 |