Bound Topological Edge State in the Continuum for All-Dielectric Photonic Crystals

2021 ◽  
Vol 16 (6) ◽  
Author(s):  
Zhanyuan Zhang ◽  
Zhihao Lan ◽  
Yaozu Xie ◽  
Menglin L.N. Chen ◽  
Wei E.I. Sha ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Edge State ◽  
The Continuum

Topological Edge State in the Two-Dimensional Stampfli-Triangle Photonic Crystals

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
Bei Yan ◽  
Jianlan Xie ◽  
Exian Liu ◽  
Yuchen Peng ◽  
Rui Ge ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Edge State ◽  
Two Dimensional

Dynamically reconfigurable topological edge state in phase change photonic crystals

2019 ◽  
Vol 64 (12) ◽  
pp. 814-822 ◽  
Author(s):  
Tun Cao ◽  
Linhan Fang ◽  
Ying Cao ◽  
Nan Li ◽  
Zhiyou Fan ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Phase Change ◽  
Edge State ◽  
Dynamically Reconfigurable

Interface states and bound states in the continuum in photonic crystals with different lattice constants

2020 ◽  
Vol 45 (20) ◽  
pp. 5652
Author(s):  
Jiwang Chai ◽  
Liang Liu ◽  
Peng Hu ◽  
Hong Xiang ◽  
Dezhuan Han
Keyword(s):  
Photonic Crystals ◽  
Bound States ◽  
Interface States ◽  
Lattice Constants ◽  
The Continuum

scholarly journals Near‐Zero Index Photonic Crystals with Directive Bound States in the Continuum

2021 ◽  
pp. 2000559
Author(s):  
Larissa Vertchenko ◽  
Clayton DeVault ◽  
Radu Malureanu ◽  
Eric Mazur ◽  
Andrei Lavrinenko
Keyword(s):  
Photonic Crystals ◽  
Bound States ◽  
Zero Index ◽  
The Continuum

scholarly journals Optical Biosensors Based on Photonic Crystals Supporting Bound States in the Continuum

Materials ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 526 ◽  
Author(s):  
Silvia Romano ◽  
Annalisa Lamberti ◽  
Mariorosario Masullo ◽  
Erika Penzo ◽  
Stefano Cabrini ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Bound States ◽  
Optical Biosensors ◽  
The Continuum

Dual modulation of topological edge states from two-dimensional photonic crystals with lattice shrink

2021 ◽  
pp. 2150236
Author(s):  
Xiao-Xue Li ◽  
Yun-Tuan Fang ◽  
Li-Xia Yang
Keyword(s):  
Photonic Crystals ◽  
Edge State ◽  
Wide Bandgap ◽  
Two Dimensional ◽  
Edge States ◽  
Source Position ◽  
State Structure ◽  
Intense Field ◽  
Flat Edge ◽  
Field Localization

The current topological edge states lack dynamical modulation and the intense field localization effect. To solve these problems, we construct a topological edge state structure based on two-dimensional photonic crystals with lattice shrink. Through the optimization of structure parameters, a nearly flat edge state dispersion curve occurs in a wide bandgap. The topological edge states with intense field localization take on some unique properties such that the transport directions can be controlled by both the source spin and the source position. The transport modes can be dynamically switched between the two opposite unidirectional channels just through moving the source position.

scholarly journals Point-Defect-Localized Bound States in the Continuum in Photonic Crystals and Structured Fibers

2021 ◽  
Vol 127 (2) ◽  
Author(s):  
Sachin Vaidya ◽  
Wladimir A. Benalcazar ◽  
Alexander Cerjan ◽  
Mikael C. Rechtsman
Keyword(s):  
Photonic Crystals ◽  
Point Defect ◽  
Bound States ◽  
The Continuum

TOPOLOGICAL PHOTONIC STATES

2013 ◽  
Vol 28 (02) ◽  
pp. 1441001 ◽  
Author(s):  
CHENG HE ◽  
LIANG LIN ◽  
XIAO-CHEN SUN ◽  
XIAO-PING LIU ◽  
MING-HUI LU ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Group Velocity ◽  
Time Reversal ◽  
Edge State ◽  
Time Reversal Symmetry ◽  
Edge States ◽  
Energy Bands ◽  
Integer Quantum Hall Effect ◽  
Topological States ◽  
Photonic States

As exotic phenomena in optics, topological states in photonic crystals have drawn much attention due to their fundamental significance and great potential applications. Because of the broken time-reversal symmetry under the influence of an external magnetic field, the photonic crystals composed of magneto-optical materials will lead to the degeneracy lifting and show particular topological characters of energy bands. The upper and lower bulk bands have nonzero integer topological numbers. The gapless edge states can be realized to connect two bulk states. This topological photonic states originated from the topological property can be analogous to the integer quantum Hall effect in an electronic system. The gapless edge state only possesses a single sign of gradient in the whole Brillouin zone, and thus the group velocity is only in one direction leading to the one-way energy flow, which is robust to disorder and impurity due to the nontrivial topological nature of the corresponding electromagnetic states. Furthermore, this one-way edge state would cross the Brillouin center with nonzero group velocity, where the negative-zero-positive phase velocity can be used to realize some interesting phenomena such as tunneling and backward phase propagation. On the other hand, under the protection of time-reversal symmetry, a pair of gapless edge states can also be constructed by using magnetic–electric coupling meta-materials, exhibiting Fermion-like spin helix topological edge states, which can be regarded as an optical counterpart of topological insulator originating from the spin–orbit coupling. The aim of this article is to have a comprehensive review of recent research literatures published in this emerging field of photonic topological phenomena. Photonic topological states and their related phenomena are presented and analyzed, including the chiral edge states, polarization dependent transportation, unidirectional waveguide and nonreciprocal optical transmission, all of which might lead to novel applications such as one-way splitter, optical isolator and delay line. In addition, the possible prospect and development of related topics are also discussed.

The quantum transmission characteristic of one-dimensional photonic crystals

2019 ◽  
Vol 33 (16) ◽  
pp. 1950164
Author(s):  
Qing Pan ◽  
Xiang-Yao Wu ◽  
Xiao-Jing Liu ◽  
Xiao-Ru Zhang ◽  
Ji-Ping Liu ◽  
...  
Keyword(s):  
Quantum Theory ◽  
Dispersion Relation ◽  
Photonic Crystals ◽  
Topological Property ◽  
Edge State ◽  
Transmission Characteristic ◽  
Theory Approach ◽  
One Dimensional ◽  
Quantum Transmission ◽  
Matrix Quantum

In this paper, we have given the quantum transfer matrix, quantum dispersion relation, quantum transmissivity and reflectivity of one-dimensional photonic crystals with the quantum theory of photon. We have studied the quantum transmission characteristic of different structure one-dimensional photonic crystals, which include mirror and nonmirror structures, with and without defect, and the defects are active and inactive media. On that basis, we compared the dispersion relation, transmissivity and reflectivity of quantum with classical for one-dimensional photonic crystals, and found they are identical, which indicate the quantum theory approach of photonic crystals is true, it can further study the quantum topological property of photonic crystals, such as quantum Zak phase, Chern number and quantum edge state and so on.

Using symmetry bandgaps to create a line of bound states in the continuum in 3D photonic crystals

2021 ◽  
Author(s):  
Alexander Cerjan ◽  
Christina Jorg ◽  
Wladimir A. Benalcazar ◽  
Sachin Vaidya ◽  
Chia Wei Hsu ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Bound States ◽  
The Continuum
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