A5063883538- Advanced Fiber Laser Technologies
- Topological Materials and Phenomena
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Mechanical and Optical Resonators
- Nonlinear Photonic Systems
- Quantum many-body systems
- Strong Light-Matter Interactions
- Diamond and Carbon-based Materials Research
- Photorefractive and Nonlinear Optics
- Graphene research and applications
- Cold Atom Physics and Bose-Einstein Condensates
- Nonlinear Waves and Solitons
- Advanced Fiber Optic Sensors
- Iron and Steelmaking Processes
- Theoretical and Computational Physics
- Advanced Chemical Physics Studies
- Photonic and Optical Devices
- Liquid Crystal Research Advancements
- Spectroscopy and Quantum Chemical Studies
- Electric Power System Optimization
- Powder Metallurgy Techniques and Materials
- Nuclear Physics and Applications
- Topological and Geometric Data Analysis
- Optical Wireless Communication Technologies
King Abdullah University of Science and Technology
2021-2024
Aerospace Information Research Institute
2024
Chinese Academy of Sciences
2024
Southern University of Science and Technology
2024
Shanghai Jiao Tong University
2015-2023
Institute of Spectroscopy
2023
Changzhi University
2023
Beijing University of Posts and Telecommunications
2015-2023
Beihang University
2020-2022
Ministry of Industry and Information Technology
2022
Abstract Topological phases of matter are conventionally characterized by the bulk‐boundary correspondence in Hermitian systems. The topological invariant bulk d dimensions corresponds to number ( − 1)‐dimensional boundary states. By extension, higher‐order insulators reveal a bulk‐edge‐corner correspondence, such that n th order feature )‐dimensional advent non‐Hermitian systems sheds new light on emergence skin effect (NHSE) with an extensive modes under open conditions. Still, NHSE...
The modern theory of quantized polarization has recently extended from 1D dipole moment to multipole moment, leading the development conventional topological insulators (TIs) higher-order TIs, i.e., bulk as primary index, fractional corner charge secondary index. authors here extend this by theoretically discovering a end TI (HOETI) in real projective lattice and experimentally verifying prediction using topolectric circuits. A HOETI realizes dipole-symmetry-protected phase...
Laser absorption spectroscopy combined with spectral analysis has been extensively investigated in detection and measurements of gas samples because their broad applicability for measuring more than one hundred species, such as O2, CO2, H2O, HCl, NH3, NOx, hydrocarbons. Recently, real-time based on laser have attracted considerable interest from various fields owing to performance robustness, fast response speed, high sensitivity, good precision. Here, we review the commonly used infrared...
The existence of thresholdless vortex solitons trapped at the core disclination lattices that realize higher-order topological insulators is reported. study demonstrates interplay between nonlinearity and topology in these systems, as state lattice bifurcates from its linear counterpart, while position propagation constant within bandgap localization can be controlled by power. It shown are characterized strong field confinement due to their nature, leading enhanced stability....
Bloch oscillations refer to the periodic oscillation of a wave packet in lattice under constant force. Typically, has fundamental period that corresponds traversing first Brillouin zone once. Here, we demonstrate, both theoretically and experimentally, optical where must traverse twice complete full cycle, resulting is 2 times longer than usual oscillations. The unusual arise due band crossing valley-Hall topological edge states at boundary for zigzag domain walls between two staggered...
Abstract Since graphene was first reported as a saturable absorber to achieve ultrafast pulses in fiber lasers, many other two-dimensional (2D) materials, such topological insulators, transition metal dichalcogenides, black phosphorus, and MXenes, have been widely investigated lasers due their broadband operation, recovery time, controllable modulation depth. Recently, solution-processing methods for the fabrication of 2D materials attracted considerable interest advantages low cost, easy...
Abstract Recent advancements in quantum polarization theory have propelled the exploration of topological insulators (TIs) into realm higher-order systems, leading to study celebrated two-dimensional (2D) quadrupole and three-dimensional (3D) octupole TIs. Traditionally, these phases been associated with toroidal topology conventional Brillouin zone (BZ). This paper reports on discovery a novel insulating phase protected by 3D momentum-space nonsymmorphic group emerging within framework real...
We address the properties of wavepacket localization-delocalization transition (LDT) in fractional dimensions with a quasi-periodic lattice. The LDT point, which is generally determined by competition between two sub-lattices comprising lattice, turns out to be inversely proportional Lévy index. Surprisingly, we find that, presence weak structural disorder, anti-Anderson localization occurs, i.e., introduced disorder results an increasing size linear modes. Inclusion focusing nonlinearity...
The dynamics of nanosecond square pulses have been experimentally investigated in an all-normal-dispersion Yb-doped figure-eight passively mode-locked fiber laser under the condition dissipative soliton resonance (DSR). Experimentally, by carefully adjusting polarization controllers with fixed pump power, DSR could be split into their harmonic (HML) counterparts. Further study showed that HML had characteristics identical to those single pulses, pulse energies and widths all increasing...
Metal nanomaterials have attracted increasing attention due to their outstanding nonlinear optical and photonic properties, making them as potential saturable absorber (SA) candidates for realizing ultrafast devices. In this article, we demonstrate the generation of mode-locked dual-wavelength pulse trains in an Ag nanoplates (AgNPTs)-based Yb-doped all-fiber laser first time best our knowledge. The AgNPTs are synthesized by seed-mediated growth then integrated into a fiber ferrule...
<title>Abstract</title> Topological polaritons characterized by light-matter interactions have become a pivotal platform in exploring new topological phases of matter. Recent theoretical advances unveiled novel mechanism for tuning modifying the surrounding photonic environment (light-matter interactions) without altering lattice structure. Here, embedding dimerized chain microwave helical resonators (electric dipole emitters) metallic cavity waveguide, we report experimental observation...
Circuits can provide a versatile platform for exploring new physics, particularly in probing the topological phases within complex geometries. Fractals, celebrated their intricate, self-similar duality, and noninteger dimensions, those embedded manifolds, remain uncharted this context. In our research, we implement Sierpi\ifmmode \acute{n}\else \'{n}\fi{}ski fractal insulators reconfigurable circuits while expanding scope to include cylindrical toroidal structures. Our approach is grounded...
Weyl fermions are massless chiral quasiparticles existing in materials known as semimetals. Topological surface states, associated with the unusual electronic structure semimetals, have been recently demonstrated linear systems. Ultracold atomic gases, featuring laser-assisted tunneling three-dimensional optical lattices, can be used for emulation of including nonlinear effects induced by collisional nonlinearity Bose-Einstein condensates. We demonstrate that this setting gives rise to...
Recent advancements in quantum polarization theory have propelled the exploration of topological insulators (TIs) into realm higher-order systems, leading to study celebrated two-dimensional (2D) quadrupole and three-dimensional (3D) octupole TIs. Traditionally, these phases been associated with toroidal topology conventional Brillouin zone (BZ). This Letter reports on discovery a novel insulating phase emerging within framework 3D real projective space ($\mathbb{RP}^3$). We theoretically...
Abstract A simple optical lens plays an important role for exploring the microscopic world in science and technology by refracting light with tailored spatially varying refractive indices. Recent advancements nanotechnology enable novel lenses, such as, superlens hyperlens, sub-wavelength resolution capabilities specially designed materials’ indices meta-materials transformation optics. However, these artificially nano- or micro-engineered lenses usually suffer high losses from metals are...
The Bloch band theory and Brillouin zone (BZ) that characterize wave behaviors in periodic mediums are two cornerstones of contemporary physics ranging from condensed matter to topological physics. Recent theoretical breakthrough revealed that, under the projective symmetry algebra enforced by artificial gauge fields, usual two-dimensional (2D) BZ (orientable two-torus) can be fundamentally modified a non-orientable Klein bottle with radically distinct topology novel phases. However,...
We consider the topological characteristics of spin-orbital coupling particles loaded in one-dimensional (1D) optical superlattices subject to Zeeman field. The phase shift superlattice provides a virtual dimension which allows us simulate two-dimensional phases with physically 1D system. system possesses variety quantum transitions over large parametric space and two important phases, namely, anomalous Hall (QAH) spin (QSH) are found coexist system, but they reside different bandgaps. This...