A5066541843- Plasmonic and Surface Plasmon Research
- Strong Light-Matter Interactions
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Quantum and electron transport phenomena
- Mechanical and Optical Resonators
- Topological Materials and Phenomena
- Photonic and Optical Devices
- 2D Materials and Applications
- Thermal Radiation and Cooling Technologies
- Quantum Information and Cryptography
- Advanced Antenna and Metasurface Technologies
- Graphene research and applications
- Perovskite Materials and Applications
- Quantum optics and atomic interactions
- Semiconductor Quantum Structures and Devices
- Orbital Angular Momentum in Optics
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Nonlinear Photonic Systems
- Advanced Fiber Laser Technologies
- Quantum Dots Synthesis And Properties
- Quantum Electrodynamics and Casimir Effect
- Antenna Design and Analysis
- Magnetic properties of thin films
Queen's University
2023-2025
Astronomy and Space
2025
ITMO University
2015-2024
Moscow Institute of Physics and Technology
2023-2024
Novosibirsk State Technical University
2020-2024
Weizmann Institute of Science
2024
University of Technology Sydney
2024
Bar-Ilan University
2022-2023
Saint Petersburg Academic University
2011-2020
Physico-Technical Institute
2007-2020
Conventional surface plasmons have a wave vector exceeding that of light in vacuum, and therefore cannot be directly excited by is simply incident on the surface. However, we propose plasmon-polariton state can formed at boundary between metal dielectric Bragg mirror zero in-plane produced direct optical excitation. In analogy with electronic states crystal proposed Tamm, call these excitations Tamm plasmons, predict they may exist both TE TM polarizations are characterized parabolic...
We propose metamaterials for THz frequencies based on multilayer graphene structures. calculate the dielectric permittivity tensor of effective nonlocal medium with a periodic stack layers and demonstrate that tuning from elliptic to hyperbolic dispersion can be achieved an external gate voltage. reveal such structures giant Purcell effect used boosting emission in semiconductor devices. Tunability these enhanced further magnetic field which leads unconventional hybridization TE TM polarized waves.
Optical bound states in the continuum (BIC) are localized with energy lying above light line and having infinite lifetime. Any losses taking place real systems result transformation of into resonant finite In this Letter, we analyze properties BIC CMOS-compatible one-dimensional photonic structure based on silicon-on-insulator wafer at telecommunication wavelengths, where absorption silicon is negligible. We reveal that a high-index substrate could destroy both off-Γ in-plane symmetry...
Quantum emitters coupled to waveguides experience long-range interactions mediated by photons. This leads superradiant and subradiant states, photon bound various mechanisms for the preparation of entangled states emitters. article reviews experiments on a wide range systems their description theoretical methods insights from different fields physics.
Abstract Optical bound states in the continuum (BICs) provide a way to engineer very narrow resonances photonic crystals. The extended interaction time these systems is particularly promising for enhancement of nonlinear optical processes and development next generation active devices. However, achievable strength limited by purely character BICs. Here, we mix BIC crystal slab with excitons atomically thin semiconductor MoSe 2 form exciton-polaritons Rabi splitting 27 meV, exhibiting large...
We study exciton-polaritons in a two-dimensional Lieb lattice of micropillars. The energy spectrum the system features two flat bands formed from $S$ and $P_{x,y}$ photonic orbitals, into which we trigger bosonic condensation under high power excitation. symmetry orbital wave functions combined with spin-orbit coupling gives rise to emission patterns pseudospin texture band condensates. Our work shows potential polariton lattices for emulating Hamiltonians coupling, degrees freedom interactions.
We reveal the existence of a new type surface electromagnetic waves supported by hyperbolic metasurfaces, described conductivity tensor with an indefinite signature. demonstrate that spectrum metasurface consists two branches corresponding to hybrid TE-TM polarization varies from linear elliptic or circular depending on wave frequency and propagation direction. analyze effect losses derive analytical asymptotic expressions.
One of the basic functionalities photonic devices is ability to manipulate polarization state light. Polarization components are usually implemented using retardation effect in natural birefringent crystals and, thus, have a bulky design. Here, we demonstrated manipulation light by employing thin subwavelength slab metamaterial with an extremely anisotropic effective permittivity tensor. properties incident on regime hyperbolic, epsilon-near-zero, and conventional elliptic dispersions were...
We study theoretically the Coulomb interaction between excitons in transition metal dichalcogenide (TMD) monolayers. calculate direct and exchange for both ground excited states of excitons. The screening interaction, specific to monolayer structures, leads unique behavior exciton-exciton scattering states, characterized by nonmonotonic dependence as function transferred momentum. find that nontrivial enables description TMD exciton strength approximate formula which includes binding...
Being motivated by recent achievements in the rapidly developing fields of optical bound states continuum (BICs) and excitons monolayers transition metal dichalcogenides, we analyze strong coupling between BICs $\rm Ta_2O_5$ periodic photonic structures WSe_2$ monolayers. We demonstrate that giant radiative lifetime allow to engineer exciton-polariton enhancing it three orders magnitude compared a bare exciton. show maximal hybrid light-matter state can be achieved at any point...
We develop a general theoretical framework of integrated paired photon-plasmon generation through spontaneous wave mixing in nonlinear plasmonic and metamaterial nanostructures, rigorously accounting for material dispersion losses the quantum regime electromagnetic Green function. identify correlations layered metal-dielectric structures with 70% internal heralding efficiency reveal novel mechanism broadband enhancement due to topological transition hyperbolic metamaterials.
Abstract We reveal unusually strong polarization sensitivity of electric and magnetic dipole resonances high‐index dielectric nanoparticles placed on a metallic film. By employing dark‐field spectroscopy, we observe the polarization‐controlled transformation from high‐Q magnetic‐dipole scattering to broadband suppression associated with mode, show numerically that it is accompanied by enhancement respective fields nanoparticle. Our experimental data for silicon nanospheres are in an...
Optical bound state in the continuum (BIC) is characterized by infinitely high quality factor resulting drastic enhancement of light-matter interaction phenomena. We study optical response a one-dimensional photonic crystal slab with Kerr focusing nonlinearity vicinity BIC analytically and numerically. predict strong nonlinear including multistable behaviour, self-tuning to frequency incident wave, breaking symmetry protected BIC. show that all these phenomena can be observed silicon...
We demonstrate theoretically that the interaction of electrons in gapped Dirac materials (gapped graphene and transition-metal dichalchogenide monolayers) with a strong off-resonant electromagnetic field (dressing field) substantially renormalizes band gaps spin-orbit splitting. Moreover, renormalized electronic parameters drastically depend on polarization. Namely, linearly polarized dressing always decreases gap (and, particularly, can turn into zero), whereas circularly breaks equivalence...
Matter in nontrivial topological phase possesses unique properties, such as support of unidirectional edge modes on its interface. It is the existence which responsible for wonderful properties a insulator -- material insulating bulk but conducting surface, along with many recently proposed photonic and polaritonic analogues. We show that exciton-polariton fluid kagome lattice, supports nonlinear excitations form solitons built up from wavepackets solitons. Our theoretical numerical results...
During the last years, giant optical anisotropy has demonstrated its paramount importance for light manipulation. In spite of recent advances in field, achievement continuous tunability remains an outstanding challenge. Here, we present a solution to problem through chemical alteration halogen atoms single-crystal halide perovskites. As result, manage continually modify by 0.14. We also discover that perovskite can demonstrate up 0.6 visible range─the largest value among non-van der Waals...
Channeling of exciton polaritons in the plane semiconductor microcavities can be achieved by deposition metallic mesas on top structure. We show theoretically that regime strong coupling between cavity and Tamm surface plasmons is possible such structures. The effect favorable for spatial confinement formation hybrid one-dimensional plasmon-polariton modes.
Transverse spin angular momentum is an inherent feature of evanescent waves which may have applications in nanoscale optomechanics, spintronics, and quantum information technology due to the robust spin-directional coupling. Here we analyze a local density hybrid surface propagating along anisotropic hyperbolic metasurfaces. We reveal that, contrast bulk plane conventional plasmons at isotropic interfaces, can be engineered arbitrary angle with propagation direction. This property allows...
We study nonlinear propagation of electromagnetic waves in two closely spaced graphene layers and demonstrate that this double-layer waveguide can operate as an efficient optical coupler for both continuous plasmons subwavelength spatial plasmon solitons. analyze the nonlinearity-induced effects light localization symmetry breaking such a coupler, predict interlayer power-dependent coupling provides mechanism beam control manipulation at realistic input power levels.
The radiation dynamics of optical emitters can be manipulated by properly designed material structures providing high local density photonic states, a phenomenon often referred to as the Purcell effect. Plasmonic nanorod metamaterials with hyperbolic dispersion electromagnetic modes are believed deliver significant enhancement both broadband and non-resonant nature. Here, we have investigated finite-size cavities formed shown that main mechanism effect in these resonators originates from...
Abstract Surface electromagnetic waves are characterized by the intrinsic spin‐orbit interaction which results in fascinating spin‐momentum locking. Therefore, directional coupling of light to surface can be achieved through chiral nanoantennas. Here, we show that dielectric nanoantenna provides response with strong spectral dependence due interference electric and magnetic dipole momenta when placed vicinity metal‐air interface. Remarkably, behaviour proposed scheme does not require...
We numerically investigate a magnetic resonant wireless power transfer system based on high refractive index dielectric resonators. propose to operate at quadrupole mode of the resonators enlarge efficiency due minimization ohmic and radiation losses. Numerical estimation predicts 80% (WPT) operating 300 MHz. Moreover, is capable transferring with 70% when receiver rotates 90°. verify simulated results by experimental investigation WPT microwave ceramic (ε = 80 tanδ 10−4).
Achieving efficient localization of white light at the nanoscale is a major challenge due to diffraction limit, and emitters generating with broadband spectrum require complicated engineering. Here we suggest simple, yet highly efficient, white-light source based on hybrid Si/Au nanoparticle ultrabroadband (1.3–3.4 eV) spectral characteristics. We incorporate this novel into scanning-probe microscope observe photoluminescence that allows fast mapping local optical response advanced...