4.7 Article

Second-order topological phases in C 4v -symmetric photonic crystals beyond the two-dimensional Su-Schrieffer-Heeger model

Related references

Note: Only part of the references are listed.
Review Nanoscience & Nanotechnology

Topological photonics: Where do we go from here?

Mordechai Segev et al.

Summary: Topological photonics, as one of the most active research areas in optics, has proven itself as an excellent platform for experimenting with concepts from condensed matter physics. It has also sparked new fundamental ideas and exciting applications that could potentially lead to real technologies in the near future.

NANOPHOTONICS (2021)

Article Chemistry, Multidisciplinary

Nonlinear Imaging of Nanoscale Topological Corner States

Sergey S. Kruk et al.

Summary: Topological states of light localized at the boundaries of finite-size optical structures, originating from bulk properties, exhibit insensitivity to perturbations and enhance the robustness of photonic circuitries. The higher-order bulk-boundary correspondence relating higher-dimensional bulk states to lower-dimensional boundary states is of interest for miniaturization to the nanoscale. Nanoscale topological corner states in metasurfaces allow for enhanced light-matter interactions, potentially facilitating the miniaturization and integration of classical and quantum photonic devices on-chip.

NANO LETTERS (2021)

Article Physics, Applied

Dual-Polarization Second-Order Photonic Topological Insulators

Yafeng Chen et al.

Summary: This paper introduces a dual-polarization topological photonic crystal structure suitable for both transverse magnetic and transverse electric modes, with significant topological features. The optimized structure can generate four groups of corner states with different properties in the transverse magnetic and transverse electric modes, showing high resilience against defects.

PHYSICAL REVIEW APPLIED (2021)

Review Physics, Applied

Recent progress on metasurfaces: applications and fabrication

Gwanho Yoon et al.

Summary: Metasurfaces are two-dimensional arrays of subwavelength optical antennas with potential applications in next-generation optical components, but challenges remain in large-scale manufacturing of these tiny nanostructures. Various methods are being attempted to overcome the limitations of conventional fabrication techniques.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2021)

Article Optics

Topological photonic crystal fibers based on second-order corner modes

Ruirong Gong et al.

Summary: Photonic crystal fibers are a highly active research field in modern fiber optics, with recent advancements in topological photonics inspiring new fiber concepts and designs. This new type of topological photonic crystal fiber, based on second-order photonic corner modes, introduces novel corner fiber modes within a topological bandgap for multi-frequency and multi-channel transmission capabilities. The study not only has practical significance, but also opens up new opportunities for fiber designs and applications in higher-order topological photonic modes.

OPTICS LETTERS (2021)

Article Optics

In-plane excitation of a topological nanophotonic corner state at telecom wavelengths in a cross-coupled cavity

Xin-Tao He et al.

Summary: This study in silicon photonics demonstrates the theoretical and experimental investigation of topological nanophotonic corner state, emphasizing the essentiality of achieving such topological states in silicon photonic integrated circuits. By designing a cross-coupled PC cavity for in-plane excitation and imaging the corner state near 1383 nm, potential applications for cavity-mode-based passive devices in silicon PICs are highlighted.

PHOTONICS RESEARCH (2021)

Article Optics

Higher-order topological phases in tunable C3 symmetric photonic crystals

Hai-Xiao Wang et al.

Summary: In this study, we demonstrate that multiple higher-order topological transitions can be triggered by changing the geometry of kagome photonic crystals composed of three dielectric rods. By tuning a single geometry parameter, photonic corner and edge states can emerge or disappear with higher-order topological transitions. Two distinct higher-order topological insulator phases and a normal insulator phase are revealed, and a photonic analog of the fractional corner charge is introduced to distinguish the two higher-order topological insulator phases. Our predictions can be easily realized and verified in configurable dielectric photonic crystals.

PHOTONICS RESEARCH (2021)

Article Nanoscience & Nanotechnology

Multi-class, multi-functional design of photonic topological insulators by rational symmetry-indicators engineering

Jiachen Luo et al.

Summary: An explicit topology optimization-based design paradigm is proposed for the design of photonic topological crystalline insulators (TCIs), which is successfully applied to design photonic TCIs with time-reversal symmetry in two-dimensional point groups, higher-order magnetic TCIs, and higher-order photonic TCIs. This methodology paves the way for inverse design of optimized photonic/phononic, multiphysics, and multifunctional three-dimensional TCIs.

NANOPHOTONICS (2021)

Article Nanoscience & Nanotechnology

Azimuthally and radially polarized orbital angular momentum modes in valley topological photonic crystal fiber

Zhishen Zhang et al.

Summary: Artificially tailoring the polarization and phase of light has opened up new possibilities in optical communication, optical tweezers, and laser processing. Valley topological physics offers a unique approach to control electromagnetic waves and encode information. By incorporating valley topological phases into the fiber design, robust fiber modes with unprecedented polarization properties can be achieved, overcoming traditional polarization constraints.

NANOPHOTONICS (2021)

Article Materials Science, Multidisciplinary

Topologically protected second harmonic generation via doubly resonant high-order photonic modes

Yafeng Chen et al.

Summary: The proposal suggests achieving high-efficiency second harmonic generation in a second-order photonic topological insulator by tuning structural parameters. Unprecedented frequency conversion efficiency is predicted through the nonlinear interaction of the doubly resonant topological corner states, while also demonstrating the robustness of the nonlinear process against defects. This work opens up avenues for topologically protected nonlinear frequency conversion using high-order photonic topological modes.

PHYSICAL REVIEW B (2021)

Review Physics, Applied

Higher-order band topology

Biye Xie et al.

Summary: The emergence of higher-order topological insulators with gapless hinge or corner states has expanded our understanding of topological phases. These unconventional TIs have significant contributions to the development of photonic, phononic, and circuit systems, and their discovery has unveiled the hierarchical structure of topological band theory.

NATURE REVIEWS PHYSICS (2021)

Article Optics

Second-harmonic generation via double topological valley-Hall kink modes in all-dielectric photonic crystals

Zhihao Lan et al.

Summary: This research explores a new area of nonlinear topological photonics by demonstrating second-harmonic generation in all-dielectric photonic crystals through the nonlinear interaction of double topological valley-Hall kink modes. The study shows that tunable, bidirectional phase-matched SHG can be achieved through the nonlinear interaction of valley-Hall kink modes within the two frequency band gaps between two PhCs.

PHYSICAL REVIEW A (2021)

Article Multidisciplinary Sciences

Electrically pumped topological laser with valley edge modes

Yongquan Zeng et al.

NATURE (2020)

Article Chemistry, Multidisciplinary

Higher-Order Topological States in Surface-Wave Photonic Crystals

Li Zhang et al.

ADVANCED SCIENCE (2020)

Review Optics

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

Minkyung Kim et al.

LIGHT-SCIENCE & APPLICATIONS (2020)

Article Optics

Low-threshold topological nanolasers based on the second-order corner state

Weixuan Zhang et al.

LIGHT-SCIENCE & APPLICATIONS (2020)

Article Optics

Twisted Quadrupole Topological Photonic Crystals

Xiaoxi Zhou et al.

LASER & PHOTONICS REVIEWS (2020)

Article Multidisciplinary Sciences

Higher-order quantum spin Hall effect in a photonic crystal

Biye Xie et al.

NATURE COMMUNICATIONS (2020)

Review Nanoscience & Nanotechnology

Topological phases in ring resonators: recent progress and future prospects

Daniel Leykam et al.

NANOPHOTONICS (2020)

Article Physics, Multidisciplinary

Robustness of topological corner modes in photonic crystals

Matthew Proctor et al.

PHYSICAL REVIEW RESEARCH (2020)

Article Physics, Multidisciplinary

Inverse design of higher-order photonic topological insulators

Yafeng Chen et al.

PHYSICAL REVIEW RESEARCH (2020)

Article Nanoscience & Nanotechnology

Topological edge and corner states in a two-dimensional photonic Su-Schrieffer-Heeger lattice

Minkyung Kim et al.

NANOPHOTONICS (2020)

Article Materials Science, Multidisciplinary

Nature of topological protection in photonic spin and valley Hall insulators

Matthias Saba et al.

PHYSICAL REVIEW B (2020)

Article Physics, Multidisciplinary

Helical Topological Edge States in a Quadrupole Phase

Feng Liu et al.

PHYSICAL REVIEW LETTERS (2019)

Article Multidisciplinary Sciences

A silicon-on-insulator slab for topological valley transport

Xin-Tao He et al.

NATURE COMMUNICATIONS (2019)

Article Materials Science, Multidisciplinary

Inverse Design of Photonic Topological Insulators with Extra-Wide Bandgaps

Yafeng Chen et al.

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS (2019)

Article Physics, Multidisciplinary

Non-Hermitian Sonic Second-Order Topological Insulator

Zhiwang Zhang et al.

PHYSICAL REVIEW LETTERS (2019)

Article Physics, Multidisciplinary

Direct Observation of Corner States in Second-Order Topological Photonic Crystal Slabs

Xiao-Dong Chen et al.

PHYSICAL REVIEW LETTERS (2019)

Article Physics, Multidisciplinary

Visualization of Higher-Order Topological Insulating Phases in Two-Dimensional Dielectric Photonic Crystals

Bi-Ye Xie et al.

PHYSICAL REVIEW LETTERS (2019)

Article Physics, Multidisciplinary

Third-Harmonic Generation in Photonic Topological Metasurfaces

Daria Smirnova et al.

PHYSICAL REVIEW LETTERS (2019)

Article Materials Science, Multidisciplinary

Extremely Broadband Topological Surface States in a Photonic Topological Metamaterial

Minkyung Kim et al.

ADVANCED OPTICAL MATERIALS (2019)

Article Chemistry, Multidisciplinary

Deep-Subwavelength Holey Acoustic Second-Order Topological Insulators

Zhiwang Zhang et al.

ADVANCED MATERIALS (2019)

Article Optics

Ultra-low mode volume on-substrate silicon nanobeam cavity

Jun Zhou et al.

OPTICS EXPRESS (2019)

Article Materials Science, Multidisciplinary

Topologically nontrivial photonic nodal surface in a photonic metamaterial

Minkyung Kim et al.

PHYSICAL REVIEW B (2019)

Article Nanoscience & Nanotechnology

Quantitative robustness analysis of topological edge modes in C6 and valley-Hall metamaterial waveguides

Bakhtiyar Orazbayev et al.

NANOPHOTONICS (2019)

Article Multidisciplinary Sciences

Spin- and valley-polarized one-way Klein tunneling in photonic topological insulators

Xiang Ni et al.

SCIENCE ADVANCES (2018)

Article Materials Science, Multidisciplinary

Second-order photonic topological insulator with corner states

Bi-Ye Xie et al.

PHYSICAL REVIEW B (2018)

Review Optics

Two-dimensional topological photonics

Alexander B. Khanikaev et al.

NATURE PHOTONICS (2017)

Article Physics, Multidisciplinary

Novel Topological Phase with a Zero Berry Curvature

Feng Liu et al.

PHYSICAL REVIEW LETTERS (2017)

Article Multidisciplinary Sciences

Quantized electric multipole insulators

Wladimir A. Benalcazar et al.

SCIENCE (2017)

Article Materials Science, Multidisciplinary

Valley-contrasting physics in all-dielectric photonic crystals: Orbital angular momentum and topological propagation

Xiao-Dong Chen et al.

PHYSICAL REVIEW B (2017)

Article Computer Science, Interdisciplinary Applications

Bi-directional evolutionary optimization for photonic band gap structures

Fei Meng et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2015)

Article Physics, Multidisciplinary

Scheme for Achieving a Topological Photonic Crystal by Using Dielectric Material

Long-Hua Wu et al.

PHYSICAL REVIEW LETTERS (2015)

Article Optics

Analogs of quantum-Hall-effect edge states in photonic crystals

S. Raghu et al.

PHYSICAL REVIEW A (2008)

Article Physics, Multidisciplinary

Possible realization of directional optical waveguides in photonic crystals with broken time-reversal symmetry

F. D. M. Haldane et al.

PHYSICAL REVIEW LETTERS (2008)