Open AccessJournal Article
Probing topological protection using a designer surface plasmon structure
Fei Gao,Zhen Gao,Xihang Shi,Zhaoju Yang,Xiao Lin,Hongyi Xu,John D. Joannopoulos,Marin Soljacic,Hongsheng Chen,Ling Lu,Yidong Chong,Baile Zhang +11 more
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TLDR
This work constructs photonic topological edge states and probes 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.Abstract:
Nanyang Technological University (NAP Start-up Grant, Singapore Ministry of Education, Grant No. MOE2015-T2-1-070)read more
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Journal ArticleDOI
Topological Photonics
Tomoki Ozawa,Hannah M. Price,Alberto Amo,Nathan Goldman,Mohammad Hafezi,Ling Lu,Mikael C. Rechtsman,David Schuster,Jonathan Simon,Oded Zilberberg,Iacopo Carusotto +10 more
TL;DR: Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light as mentioned in this paper, which holds great promise for applications.
Journal ArticleDOI
Experimental observation of anomalous topological edge modes in a slowly driven photonic lattice.
Sebabrata Mukherjee,Alexander Spracklen,Manuel Valiente,Erika Andersson,Patrik Öhberg,Nathan Goldman,Robert R. Thomson +6 more
TL;DR: This work demonstrates the experimental observation of anomalous topological edge modes in a 2D photonic lattice, where these propagating edge states are shown to coexist with a quasi-localized bulk.
Journal ArticleDOI
Second-order photonic topological insulator with corner states
TL;DR: In this article, a two-dimensional second-order photonic crystal with zero-dimensional corner states and one-dimensional boundary states for optical frequencies is proposed. And the theory of topological polarization is used to tune the easily fabricated structure of the photonic crystals so that different topological phases can be realized straightforwardly.
Journal ArticleDOI
Photonic quantum information processing: a review
TL;DR: The goal of this manuscript is to provide the reader with a comprehensive review of the state of the art in this active field with a due balance between theoretical, experimental and technological results.
Journal ArticleDOI
Direct observation of valley-polarized topological edge states in designer surface plasmon crystals.
Xiaoxiao Wu,Yan Meng,Yan Meng,Jingxuan Tian,Yingzhou Huang,Hong Xiang,Dezhuan Han,Weijia Wen,Weijia Wen +8 more
TL;DR: A designer surface plasmon crystal comprising metallic patterns deposited on a dielectric substrate is demonstrated, which can become a valley-Hall photonic topological insulator by exploiting the mirror-symmetry-breaking mechanism, enabling the direct observation of topological states.
References
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Journal ArticleDOI
Colloquium: Topological insulators
M. Z. Hasan,Charles L. Kane +1 more
TL;DR: In this paper, the theoretical foundation for topological insulators and superconductors is reviewed and recent experiments are described in which the signatures of topologically insulators have been observed.
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Topological insulators and superconductors
Xiao-Liang Qi,Shou-Cheng Zhang +1 more
TL;DR: Topological superconductors are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors and are characterized by a full insulating gap in the bulk and gapless edge or surface states which are protected by time reversal symmetry.
Journal ArticleDOI
The birth of topological insulators
TL;DR: Certain insulators have exotic metallic states on their surfaces that render the electrons travelling on such surfaces insensitive to scattering by impurities, possibly finding uses in technological applications in spintronics and quantum computing.
Journal ArticleDOI
Photonic Floquet topological insulators
Mikael C. Rechtsman,Julia M. Zeuner,Yonatan Plotnik,Yaakov Lumer,Daniel K. Podolsky,Felix Dreisow,Stefan Nolte,Mordechai Segev,Alexander Szameit +8 more
TL;DR: This work proposes and experimentally demonstrate a photonic topological insulator free of external fields and with scatter-free edge transport—a photonic lattice exhibiting topologically protected transport of visible light on the lattice edges.
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Observation of unidirectional backscattering-immune topological electromagnetic states
TL;DR: It is demonstrated that, like their electronic counterparts, electromagnetic CESs can travel in only one direction and are very robust against scattering from disorder; it is found that even large metallic scatterers placed in the path of the propagating edge modes do not induce reflections.