Topics

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

08:00 EDT 14th June 2019 | BioPortfolio

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

The studies of topological phases of matter have been developed from condensed matter physics to photonic systems, resulting in fascinating designs of robust photonic devices. Recently, higher-order topological insulators have been investigated as a novel topological phase of matter beyond the conventional bulk-boundary correspondence. Previous studies of higher-order topological insulators have been mainly focused on the topological multipole systems with negative coupling between lattice sites. Here we experimentally demonstrate that second-order topological insulating phases without negative coupling can be realized in two-dimensional dielectric photonic crystals. We visualize both one-dimensional topological edge states and zero-dimensional topological corner states by using the near-field scanning technique. Our findings open new research frontiers for photonic topological phases and provide a new mechanism for light manipulating in a hierarchical way.

Affiliation

Journal Details

This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 233903

Links

DeepDyve research library

PubMed Articles [15870 Associated PubMed Articles listed on BioPortfolio]

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

Recently, higher-order topological phases that do not obey the usual bulk-edge correspondence principle have been introduced in electronic insulators and brought into classical systems, featuring in-g...

Acoustic higher-order topological insulator on a kagome lattice.

Higher-order topological insulators are a family of recently predicted topological phases of matter that obey an extended topological bulk-boundary correspondence principle. For example, a two-dimensi...

Temperature-Driven Gapless Topological Insulator.

We investigate the phase diagram of the Haldane-Falicov-Kimball model-a model combining topology, interactions, and spontaneous disorder at finite temperatures. Using an unbiased numerical method, we ...

Topological Phase Transition in non-Hermitian Quasicrystals.

The discovery of topological phases in non-Hermitian open classical and quantum systems challenges our current understanding of topological order. Non-Hermitian systems exhibit unique features with no...

Topological phases of higher Chern numbers in Kitaev-Heisenberg ferromagnet with further-neighbor interactions.

Emergence of multiple topological phases with a series of Chern numbers, 
 $\pm 1$, $\mp 1$, $\pm 2$, $\mp 2$, $\pm 3$ and $\mp 4$, is 
 found in a ferromagnetic 
 Kitaev-Heise...

Clinical Trials [4813 Associated Clinical Trials listed on BioPortfolio]

Matching Glaucoma With Impaired Cognition

Glaucoma is the leading cause of irreversible blindness in the world. The current study is designed to find the underlying relationship between impairment of topological perception and inc...

Dielectric Property Test Compared With Frozen Pathological Section in the Rapid Diagnosis of Lung Nodules/Mass

Patients with lung nodules/mass found by CT (computed tomography) or PET (positron emission tomography) who agree to receive lung resection are arranged to test the dielectric property bef...

Impact of Three-dimensional Visualization on Operation Strategy and Complications for Pancreatic Cancer

The aim of the multi-centre study is to evaluate correctly the impact of three dimensional visualization on operation strategy and complications for Pancreatic Cancer.

M5 vs. M6 Comparison Study With a Sub Study Into the Dielectric Constant of Aspirated Cyst Fluid

The MARIA breast imaging system is a Conformité Européenne (CE)-marked radio-frequency (RF) medical imaging device. The system employs an electromagnetic imaging technique that exploits ...

Validation of 3 Dimensional Laparoscopic System in Disral Pancreatectomy and Splenectomy

Traditionally, laparoscopy has been based on 2-dimensional (2D) imaging, which has represented a considerable challenge for those approaching this technique. Thus, 3-dimensional (3D) visua...

Medical and Biotech [MESH] Definitions

A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material.

Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)

X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs.

The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.

Three-dimensional computed tomographic imaging with the added dimension of time, to follow motion during imaging.

Quick Search


DeepDyve research library

Searches Linking to this Article