A5066721919- Topological Materials and Phenomena
- Plasmonic and Surface Plasmon Research
- Gyrotron and Vacuum Electronics Research
- Quantum and electron transport phenomena
- Photonic and Optical Devices
- 2D Materials and Applications
- Metamaterials and Metasurfaces Applications
- Mechanical and Optical Resonators
- Advanced biosensing and bioanalysis techniques
- Photonic Crystals and Applications
- Pulsed Power Technology Applications
- Quantum Mechanics and Non-Hermitian Physics
- Nonlinear Photonic Systems
- Photorefractive and Nonlinear Optics
- Advanced Control and Stabilization in Aerospace Systems
- Perovskite Materials and Applications
- stochastic dynamics and bifurcation
- Sensor Technology and Measurement Systems
- Advanced Fiber Laser Technologies
- Strong Light-Matter Interactions
- Spectroscopy and Quantum Chemical Studies
- Electromagnetic Launch and Propulsion Technology
- Gold and Silver Nanoparticles Synthesis and Applications
- Geophysics and Sensor Technology
- Semiconductor Lasers and Optical Devices
Friedrich Schiller University Jena
2024
University of Bonn
2019-2022
Sozvezdie (Russia)
2003-2010
Here we present a roadmap on Photonic metasurfaces. This document consists of number perspective articles different applications, challenge areas or technologies underlying photonic Each will introduce the topic, state art as well give an insight into future direction subfield.
Quantized dynamics is essential for natural processes and technological applications alike. The work of Thouless on quantized particle transport in slowly varying potentials (Thouless pumping) has played a key role understanding that such quantization may be caused not only by discrete eigenvalues quantum system, but also invariants associated with the nontrivial topology Hamiltonian parameter space. Since its discovery, pumping been believed to restricted limit slow driving, fundamental...
The bulk-edge correspondence guarantees that the interface between two topologically distinct insulators supports at least one topological edge state is robust against static perturbations. Here, we address question of how dynamic perturbations affect robustness states. We illuminate limits protection for Floquet systems in special case a bulk. use independent quantum simulators based on coupled plasmonic and dielectric photonic waveguides to implement Su-Schriefer-Heeger model with...
We present a joint experimental and theoretical study of the driven Su-Schrieffer-Heeger model implemented by arrays evanescently coupled plasmonic waveguides. Floquet theory predicts that this system hosts for suitable driving frequencies topologically protected edge state has no counterpart in static systems, so-called anomalous topological $\ensuremath{\pi}$ mode. By using real- Fourier-space leakage radiation microscopy combination with bulk excitation, we unequivocally identify mode its...
Gallium phosphide (GaP) offers unique opportunities for nonlinear and quantum nanophotonics due to its wide optical transparency range, high second-order susceptibility, the possibility tailor response by a suitable choice of crystal orientation. However, availability single crystalline thin films GaP on low index substrates, as typically required dielectric metasurfaces, is limited. Here we designed experimentally realized monolithic metasurfaces enhanced tailored second harmonic generation...
Evanescently coupled waveguides are a powerful platform to study and visualize the wave dynamics in tight-binding systems. Here, we investigate propagation of surface plasmon polaritons arrays dielectric loaded polariton with constant gradient acting as an effective external potential. Using leakage radiation microscopy, observe real-space for single site excitation periodic breathing packet oscillatory motion case Gaussian multiple waveguides. The corresponding momentum-resolved spectra...
We demonstrate transport rectification in a Hermitian Hamiltonian quantum ratchet by dissipative, dynamic impurity. While the bulk of supports both directions, properly designed loss function local impurity acts as direction-dependent filter for moving states. analyze this scheme theoretically making use Floquet S-matrix theory. In addition, we provide direct experimental observation one-way transmittance periodically modulated plasmonic waveguide arrays containing with engineered...
The valley degree of freedom is one the most intriguing properties atomically thin transition metal dichalcogenides. Together with possibility to address this by valley-contrasting optical selection rules, it has potential enable a completely new class future electronic and optoelectronic devices. Resonant nanostructures emerge as promising tools for controlling at nanoscale. However, critical understanding gap remains in how their nearfields affect polarization valley-selective chiral...
Gallium phosphide (GaP) offers unique opportunities for nonlinear and quantum nanophotonics due to its wide optical transparency range, high second-order susceptibility, the possibility tailor response by a suitable choice of crystal orientation. However, availability single crystalline thin films GaP on low index substrates, as typically required dielectric metasurfaces, is limited . Here we design resonant monolithic metasurfaces optimized efficient second harmonic (SH) generation. We...
We investigate the polarization of valley-specific emission from monolayer MoS 2 coupled to a plasmonic nanoparticle. The chiral properties are lost for hybrid system which we analyze in terms excitation and emission.
Abstract The valley degree of freedom in atomically thin transition metal dichalcogenides, coupled with valley-contrasting optical selection rules, holds great potential for future electronic and optoelectronic devices. Resonant nanostructures emerge as promising tools controlling this at the nanoscale. However, their impact on circular polarization valley-selective emission remains poorly understood. In our study, we explore a hybrid system where valley-specific from molybdenum disulfide...
Photonic bound states in the continuum (BICs) have emerged as a versatile tool for enhancing light-matter interactions by strongly confining light fields. Chiral BICs are photonic resonances with high degree of circular polarisation, which hold great promise spin-selective applications quantum optics and nanophotonics. Here, we demonstrate novel application chiral BIC inducing strong coupling between circularly polarised photons spin-polarised (valley) excitons (bound electron-hole pairs)...
Thouless pumping is intrinsically an adiabatic effect, which breaks down at finite driving frequencies. We demonstrate both theoretically and experimentally that using time-periodic dissipation can be restored outside of the limit.
Showing a using by description of possibility use EH-sensors as magnetometric sensors for weak signal reception.
Described the method of impulse amplification at expense its modulation, with increase amplitude a modulating oscillation. Showing possibility gain or destruction by influence on this waves (in case surplusion modulations).
The paper is devoted to using of a hardbody resonators for far-acting realization by use electromagnetic solitons and soliton-solitons' breathers. It's soliton structures may be work outing antennas which the information transmission.
The paper is devoted to using of a electromagnetic solitons in the radiolocation. Soliton's properties (preservation soliton's form time propagation space) giving location quality and reliability improvement for radio- or optical (laser) frequency bands
It's paper about the method of ultrashort or short UHF impulses generation. This may having following parameters: main frequency near 10 GHz; long impulse - 300 ps 3 ns; period / Q = 2... 10; pulses power 50-150 kW.
Packs of short EHF pulses is the effect electromagnetic wave energy to object because high power and frequency repetition. To solve this problem, generator scheme called incitanter amplifier proposed in paper. Such consists with striping filter. forms sinusoidal signal which reforms chosen band frequencies. The also comprises functional blocks: frequency-phase manipulator, selective filter small signal, amplifying block.
We present a joint experimental and theoretical study of the driven Su-Schrieffer-Heeger model implemented by arrays evanescently coupled plasmonic waveguides. Floquet theory predicts that this system hosts for suitable driving frequencies topologically protected edge state has no counterpart in static systems, so-called anomalous topological $\pi$-mode. By using real- Fourier-space leakage radiation microscopy combination with edge- bulk excitation, we unequivocally identify $\pi$-mode its...