Photonic Chern insulators made of gyromagnetic hyperbolic metamaterials

Shiu, Ruei-Cheng; Chan, Hsun-Chi; Wang, Hai-Xiao; Guo, Guang‐Yu

doi:10.1103/physrevmaterials.4.065202

Cited by 19 publications

(7 citation statements)

References 48 publications

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“…A similar but slightly different metamaterial that possesses topological features is a gyromagnetic hyperbolic metamaterial 154,155 . Instead of chirality, the gyromagnetic property can be combined with hyperbolicity to yield the photonic counterpart of the quantum Hall phase by breaking T .…”

Section: By Breaking the Inversion Symmetry Using Metamaterialsmentioning

confidence: 99%

Recent advances in 2D, 3D and higher-order topological photonics

2020

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Over the past decade, topology has emerged as a major branch in broad areas of physics, from atomic lattices to condensed matter. In particular, topology has received significant attention in photonics because light waves can serve as a platform to investigate nontrivial bulk and edge physics with the aid of carefully engineered photonic crystals and metamaterials. Simultaneously, photonics provides enriched physics that arises from spin-1 vectorial electromagnetic fields. Here, we review recent progress in the growing field of topological photonics in three parts. The first part is dedicated to the basics of topological band theory and introduces various two-dimensional topological phases. The second part reviews three-dimensional topological phases and numerous approaches to achieve them in photonics. Last, we present recently emerging fields in topological photonics that have not yet been reviewed. This part includes topological degeneracies in nonzero dimensions, unidirectional Maxwellian spin waves, higher-order photonic topological phases, and stacking of photonic crystals to attain layer pseudospin. In addition to the various approaches for realizing photonic topological phases, we also discuss the interaction between light and topological matter and the efforts towards practical applications of topological photonics.

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Section: By Breaking the Inversion Symmetry Using Metamaterialsmentioning

confidence: 99%

Recent advances in 2D, 3D and higher-order topological photonics

2020

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“…Mathematically, the Berry flux Φ can be described as the surface integral of the Berry curvature: T is the eigenpolarization state of metamaterial [43]. Particularly, the Berry curvature of the chiral metamaterial is calculated at every point (k y , k z ) on the two-dimensional equal frequency surface [52], as illustrated in figure 1(e). In momentum space, Chern number can be regarded as the number of monopoles (Weyl points) of Berry flux [1].…”

Section: Band Structuresmentioning

confidence: 99%

Topological phase transitions and Weyl semimetal phases in chiral photonic metamaterials

et al. 2022

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Recently, topologically nontrivial phases in chiral metamaterials have been proposed. However, a comprehensive description of topological phase diagrams and transitions in chiral metamaterials has not been presented. In this work, we demonstrate several forms of topological phase transitions and study the existence of edge states in different phases. In the local/lossless chiral media system, the topological phase transitions are associated with the Weyl points. Along with the transitions, the edge state and Fermi arc exhibit a series of changes. When nonlocal effect is introduced, the system shows phase change between type-I/II Weyl semimetal phase and trivial phase. Moreover, the dissipative system also undergoes topological phase transitions owing to the annihilation of the topological charges. Our work could be helpful for the application of topological concepts and rich the topological wave physics in metamaterial.

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“…Recent progress in engineered materials with novel electromagnetic properties is paving the way for technological advances on several fronts, ranging from nonreciprocal devices [1][2][3][4][5][6] to hyperbolic metamaterials [7] and photonic Chern insulators [8]. Three major electromagnetic wave phenomena, namely the (i) nonreciprocity, (ii) photonic spin, and (iii) hyperbolic topology, are at the forefront of next-generation devices, with all three posing unique challenges and opportunities.…”

Section: Introductionmentioning

confidence: 99%

“…Integration of the hyperbolic properties with the spin and non-reciprocity of gyrotropic materials is expected to result in interesting applications such as miniaturization of non-reciprocal components, unidirectional surface waves, and negative refraction, among others. Recently, researchers have reported the integration of engineered hyperbolic dielectric properties with gyromag-netic material [7,8,41]. In [7], the behavior of surface magnon polaritons is governed by the hyperbolic topology, which arises from a canted antiferromagnetic crystal.…”

Section: Introductionmentioning

confidence: 99%

“…In [7], the behavior of surface magnon polaritons is governed by the hyperbolic topology, which arises from a canted antiferromagnetic crystal. More recently, researchers have reported photonic Chern insulators using gyromagnetic hyperbolic metamaterial formed by a superlattice of Indium-Antimony and Yttrium Iron Garnet [8]. Gyromagnetic materials thus exhibit the three important photonic phenomena of hyperbolic topology, spin waves, and non-reciprocity as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spin-governed topological surfaces and broken spin-momentum locking in a gyromagnetic medium

Sen,

Pendharker

2021

Preprint

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Photonic Chern insulators made of gyromagnetic hyperbolic metamaterials

Cited by 19 publications

References 48 publications

Recent advances in 2D, 3D and higher-order topological photonics

Recent advances in 2D, 3D and higher-order topological photonics

Topological phase transitions and Weyl semimetal phases in chiral photonic metamaterials

Spin-governed topological surfaces and broken spin-momentum locking in a gyromagnetic medium

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