A5017791701- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum Mechanics and Non-Hermitian Physics
- 2D Materials and Applications
- Advanced Antenna and Metasurface Technologies
- Advanced Fiber Laser Technologies
- Nonlinear Optical Materials Studies
- Mechanical and Optical Resonators
- Orbital Angular Momentum in Optics
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Nonlinear Photonic Systems
- Optical Coatings and Gratings
- Neural Networks and Reservoir Computing
- Near-Field Optical Microscopy
- Energy Harvesting in Wireless Networks
- Strong Light-Matter Interactions
- Topological Materials and Phenomena
- Antenna Design and Analysis
- Silicon Nanostructures and Photoluminescence
- Terahertz technology and applications
- Wireless Power Transfer Systems
Florida International University
2021-2025
City University of New York
2018-2022
The Graduate Center, CUNY
2018-2022
CUNY Advanced Science Research Center
2018-2022
ITMO University
2011-2020
The University of Texas at Austin
2016-2020
City College of New York
2019
Aalto University
2014-2016
Australian National University
2016
Moscow Power Engineering Institute
2013
We study in detail a novel type of optical nanoantennas made high-permittivity low-loss dielectric particles. In addition to the electric resonances, particles exhibit very strong magnetic resonances at nanoscale, that can be employed Yagi-Uda geometry for creating highly efficient nanoantennas. By comparing plasmonic and nanoantennas, we demonstrate all-dielectric may better radiation efficiency also allowing more compact design.
Frequency conversion processes, such as second- and third-harmonic generation, are commonly realized in nonlinear optics, offering opportunities for applications photonics, chemistry, material science biosensing. Given the inherently weak response of natural materials, optically large samples complex phase-matching techniques typically required to realize significant responses. To produce similar effects much smaller volumes, current research has been devoted quest synthesizing novel...
All-dielectric nanophotonics is an exciting and rapidly developing area of nano-optics that utilizes the resonant behavior high-index low-loss dielectric nanoparticles to enhance light-matter interaction at nanoscale.When experimental implementation a specific all-dielectric nanostructure desired, two crucial factors have be considered: choice material fabrication method.The degree which various effects can enhanced relies on response chosen as well accuracy.Here, we provide overview...
Nanophotonics has garnered intensive attention due to its unique capabilities in molding the flow of light subwavelength regime. Metasurfaces (MSs) and photonic integrated circuits (PICs) enable realization mass-producible, cost-effective, highly efficient flat optical components for imaging, sensing, communications. In order nanophotonics with multi-purpose functionalities, chalcogenide phase-change materials (PCMs) have been introduced as a promising platform tunable reconfigurable...
The scattering of electromagnetic waves lies at the heart most experimental techniques over nearly entire spectrum, ranging from radio to optics and x rays. Hence, deep insight into basics theory an understanding peculiar features are necessary for correct interpretation data underlying physics. Recently, a broad spectrum exceptional phenomena attainable in suitably engineered structures has been predicted demonstrated. Examples include bound states continuum, points parity–time...
Recent advances in twistronics of low-dimensional materials, such as bilayer graphene and transition-metal dichalcogenides, have enabled a plethora unusual phenomena associated with moir\'e physics. However, several these effects require demanding manipulation superlattices at the atomic scale, careful control rotation angle between two closely spaced lattices. Here, we study hyperbolic plasmons pairs metasurfaces (HMTSs), unveiling analogous mesoscopic scale. HMTSs are known to support...
Phase-change materials (PCMs) offer a compelling platform for active metaoptics, owing to their large index contrast and fast yet stable phase transition attributes. Despite recent advances in phase-change metasurfaces, fully integrable solution that combines pronounced tuning measures, i.e., efficiency, dynamic range, speed, power consumption, is still elusive. Here, we demonstrate an situ electrically driven tunable metasurface by harnessing the full potential of PCM alloy, Ge2Sb2Te5...
Abstract The Purcell effect is defined as a modification of the spontaneous emission rate quantum emitter at presence resonant cavity. However, change an caused by environment has classical counterpart. Any small antenna tuned to resonance can be described oscillator with radiative losses and on its radiation modeled measured in terms resistance, similar emitter. We exploit this analogue behavior develop general approach for calculating factors different systems various frequency ranges...
We propose a novel approach for efficient tuning of optical properties high refractive index subwavelength nanoparticle with magnetic Mie-type resonance by means femtosecond laser irradiation. This concept is based on ultrafast photoinjection dense (>1020 cm–3) electron–hole plasma within such nanoparticle, drastically changing its transient dielectric permittivity. allows manipulation both electric and responses, resulting in dramatic changes scattering diagram cross section. experimentally...
Optical skyrmions have recently been constructed by tailoring vectorial near-field distributions through the interference of multiple surface plasmon polaritons, offering promising features for advanced information processing, transport and storage. Here, we provide experimental demonstration electromagnetic based on magnetic localized spoof plasmons (LSP) showing large topological robustness against continuous deformations, without stringent external conditions. By directly measuring...
Superconducting microwave cavities featuring ultrahigh Q-factors, which measure the efficiency of energy storage in relation to loss a system, are revolutionizing quantum computing by providing long coherence times exceeding 1 ms, crucial for development scalable multi-qubit systems with low error rates. In this work, we provide an in-depth analysis recent advances Q-factor cavities, integration Josephson junction-based qubits, and bosonic-encoded qubits 3D cavities. We examine sources state...
We introduce the novel concept of superdirective nanoantennas based on excitation higher-order magnetic multipole moments in subwavelength dielectric nanoparticles.
Two-dimensional transition metal dichalcogenides (TMDCs) have recently become attractive semiconductor materials for several optoelectronic applications, such as photodetection, light harvesting, phototransistors, light-emitting diodes and lasers.They are particularly appealing because their bandgap lies in the visible near-IR range, they possess strong excitonic resonances, high oscillator strengths, valley-selective response.Coupling these to optical nanocavities enhances quantum yield of...
Abstract Resonant dielectric nanoparticles made of materials with large positive permittivity, such as Si, GaP, GaAs, have become a powerful platform for modern light science, enabling various fascinating applications in nanophotonics and quantum optics. In addition to localization at the nanoscale, nanostructures provide electric magnetic resonant responses throughout visible infrared spectrum, low dissipative losses optical heating, doping effect, absence quenching, which are interesting...
Abstract Photoconductive antennas are promising sources of terahertz radiation that is widely used for spectroscopy, characterization, and imaging biological objects, deep space studies, scanning surfaces, detection potentially hazardous substances. These compact allow generation both ultrabroadband pulses tunable continuous wave signals at room temperatures, with no need high‐power optical sources. However, such have relatively low energy conversion efficiency femtosecond laser or two close...
Abstract Tailoring of electromagnetic spontaneous emission predicted by E. M. Purcell more than 50 years ago has undoubtedly proven to be one the most important effects in rich areas quantum optics and nanophotonics. Although during past decades research this field been focused on electric dipole emission, recent progress nanofabrication study magnetic emitters, such as rare‐earth ions, stimulated investigation side emission. Here, we review state‐of‐the‐art advances enhancement emitters...