We conduct a theoretical study of the bistable optical response nanoparticle heterodimer comprised closely spaced semiconductor quantum dot and metal nanoparticle. The nature results from interplay between dot's nonlinearity its self-action (feedback) originating presence feedback is governed by complex valued coupling parameter G = GR + iGI. calculate bistability phase diagram within system's space: spanned GR, GI, Δ, latter being detuning driving frequency transition dot. Additionally,...

Tho-photon Rabi oscillations hold potential for quantum computing and information processing, because during a cycle pair of entangled photons may be created. We theoretically investigate the onset this phenomenon in heterodimer comprising semiconductor dot strongly coupled to metal nanoparticle. Two-photon system occur due coherent two-photon process involving ground-to-biexciton transition dot. The presence nanoparticle nearby results self-action via nanoparticle, polatization state latter...

Tho-photon absorption holds potential for many practical applications. We theoretically investigate the onset of this phenomenon in a semiconductor quantum dot -- metallic nanoshell composite subjected to resonant CW excitation. Two-photon system may occur two ways: incoherent due consecutive ground-to-one-exciton-to-biexciton transition and coherent two-photon process, involving direct ground-to-biexciton dot. The presence nearby gives rise principal effects: (i) renormalization applied...

In this paper, we present experimental evidence on the change of phonon spectrum and vibrational properties a bulk material through hybridization mechanisms. The in finite is strongly affected by presence free surfaces, which addition contribution from an essentially two-dimensional crystal. can hence be altered mechanism between confined modes nanostructures introduced surface underlying modes. We measured heat capacities bare surface-structured silicon substrates originating same wafer....

By controlling interference of Mie resonance modes various nanostructures, we can achieve a large number nontrivial effects in nanophotonics.In this work, propose cylindrical structure which the spectral overlap Mie-type be controlled by drilling hole parallel to axis, thus changing unidirectional scattering.We further demonstrate that scattering patterns tailored rotating almost arbitrary scattered wave direction.

This paper provides theoretical understanding of the interplay between scattering phonons by boundaries and point-defects in SiGe thin films. It also a tool for design SiGe-based high-efficiency thermoelectric devices. The contributions alloy composition, grain size, film thickness to phonon rate are described model thermal conductivity based on single-mode relaxation time approximation. exact Boltzmann equation including spatial dependence distribution function is solved yield an expression...

We theoretically investigate the nonlinear optical response of a heterodimer comprising semiconductor quantum dot strongly coupled to metal nanoparticle. The is considered as three-level ladder system with ground, one-exciton, and bi-exction states. As compared case two-level model, adding third (bi-exciton) state produces fascinating effects in hybrid system. Specifically, we demonstrate that may exhibit picosecond sub-picosecond self-oscillations quasi-chaotic behaviour under...

A numerical analysis by means of transfer matrix method has been performed on finite one-dimensional photonic crystals consisting two-layer repeated cells and two non-identical defect for the normal incident transverse electric (TE) wave. The study reveals a remarkable new feature showing that variation pass-band transmittance can be induced varying refractive index one layer at practically same peak frequency, which offers potential application single frequency sensing. result further...

A study is performed on a photonic-state mixing-pattern in an insulator-metal-insulator cylindrical silver nanoshell and its rich variations induced by changes the geometry dielectric media of system, representing combined influences plasmon coupling strength cavity effects. This terms photonic local density states (LDOS) calculated using Green tensor method, order to elucidate those The energy profiles LDOS inside core are shown exhibit consistently growing number redshifted due enhanced...

We have examined the rational solitons in Generalized Coupled Mode model for a deep nonlinear Bragg grating. These are degenerate forms of ordinary and appear at transition lines parameter plane. A simple formulation is presented investigation bifurcations induced by detuning carrier wave frequency. The analysis yields among others appearance in-gap dark antidark unknown shallow exact expressions corresponding also derived process, which characterized algebraic functions. It further...

A study is conducted regarding the effects of particle size [Formula: see text] and interparticle separation on electromagnetic (plasmon) coupling in a dimer two identical metal nanospheres. The states are modeled as hybridized bonding antibonding isolated plasmon states, with associated energies given terms energy ([Formula: text], overlap integral constituent plasmonic fields. resonance absorption certain dielectric medium calculated according to Mie theory for incident light parallel...

A study is carried out to investigate the possible enhancement of photonic crystal (PC) microcavity performance induced by geometrical and permittivity variations in relation localization associated evanescent Bloch wave. The focused on PCs hexagonally packed dielectric rods. numerical scheme formulated basis Green's function method with multipole expansion approximation employed exhibit explicitly exponential growth curves spontaneous emission rate ($F$) quality factor ($Q$) cavity respect...

Dalam mendesain suatu gedung apartemen yang ekonomis dan efisien, analisis life cycle cost dibutuhkan untuk mendapatkan desain paling efisien selama umur pakai bangunan. Berdasarkan penelitian sebelumnya, telah didapatkan bahwa biaya energi merupakan komponen terbesar dalam gedung.
 Data pada ini berasal dari manajemen pengelola beberapa supplier produk peralatan di teliti. Analisis dilakukan dengan menjumlahkan awal (C), perawatan (M), operasional (O), penggantian (R) tiap peralatan....

A study on refractive index sensing using a silver nanotube is carried out to investigate the relative advantages of gaseous and liquid samples outside tube (outer sensing) inside core (inner sensing). The geometrical material parameters are varied explore favorable performances covering range indices between 1.1 1.5. It shown that at three points considered consistently improved with decreased shell thickness radius in both modes. While performance also monotonously drastically enhanced...

A study of nonlinear Bragg grating has been carried out using a modified scheme approximation originally proposed by Iizuka and de Sterke. complete classification the solitonic solutions in system was given. We further demonstrated this work existence in-gap dark antidark soliton, addition to out-gap reported previously. also found at boundaries bifurcation diagram, large-amplitude soliton broad soliton.

In this paper, we demonstrate that phonons and photons of different momenta can be confined interact with each other within the same nanostructure. The interaction between in silicon resonator arrays is observed by means Raman scattering. spectra from large dielectric resonators exhibited enhancement accompanied a downshift broadening. analysis intensity line shape using finite-difference time-domain simulations spatial correlation model demonstrated an highly defective regions prompted...

Access to scatterers that offer a specific multipolar response is of utmost importance design metasurfaces and metamaterials—and, more general, control light at the nanoscale. While isolated have been extensively considered, it interesting see clearly whether higher order resonances can be induced by exploiting interaction multiple scatterers. Here, we study appearance deterministic in two coupled high permittivity dielectric changing their spacing. To disentangle effects from those...

Explicit constructions of $a_n^{(1)}$ affine Toda field theory breather solutions are presented. Breathers arise either from two solitons the same species or which anti-species each other. In first case, breathers carry topological charges. These charges lie in tensor product representation fundamental representations associated with constituent solitons. second have zero charge. The masses are, as expected, less than sum

We study the effects of a defect created by metallic coating central rod in square lattice dielectric rods for TM polarization lights. A calculation using Plane Wave Expansion Method (PWE) supercell model shows that photonic band structure and field distribution area varies with changing layer thickness. The optimal energy localization is explored varying thickness metal layer. Enhancement confinement described narrower spatial profile thicker coating. more quantitative description, given...

Silicon nitride is a promising waveguide platform for harnessing Kerr nonlinearity due to the low propagation loss, wide transparency range, and negligible two-photon absorption effect in telecom wavelength range. However, values of nonlinear coefficient various loss silicon structures are not well defined. In this work, we perform numerical experimental investigations coefficients multi-layered (Si3N4) waveguides. Three distinct geometries were considered, namely asymmetric double stripe...

Silicon nitride is a promising waveguide platform for harnessing Kerr nonlinearity due to the low propagation loss, wide transparency range, and negligible two-photon absorption effect in telecom wavelength range. However, values of nonlinear coefficient various loss silicon structures are not well defined. In this work, we perform numerical experimental investigations coefficients multi-layered (Si3N4) waveguides. Three distinct geometries were considered, namely asymmetric double stripe...

Silicon nitride is a promising waveguide platform for harnessing Kerr nonlinearity due to the low propagation loss, wide transparency range, and negligible two-photon absorption effect in telecom wavelength range. However, values of nonlinear coefficient various loss silicon structures are not well defined. In this work, we perform numerical experimental investigations coefficients multi-layered (Si3N4) waveguides. Three distinct geometries were considered, namely asymmetric double stripe...

A derivation of approximate analytical expressions for band edges ω ± the first gap a multilayer periodic structure is presented both TE and TM waves at arbitrary angles incidence. It found that give an excellent agreement with numerical results as verified by edge variation respect to filling fraction [Formula: see text] refractive index contrast Δn. The are further employed derive semi optimization relative width ν. result again shown be in good result.

The development of a transflective display is important for reducing the energy consumption an outdoor display-device. Currently, it desirable to have transflector which can be switched between its reflective and transparent states. present work provides novel yet simple route such based on one-dimensional (1D) meta-lattice systems. system studied shown capable exciting tunable narrow resonance in reflectance spectra through generation scattered-field-induced polarizing-field system....

Abstract Stimulated Brillouin Scattering (SBS) is a phenomenon of energy transfer from an optical pump beam to longer wavelengths light through its interaction with the medium via acoustic phonons. Previous studies have reported calculation SBS gain based on force approach, where not only affected by classical paradigm intrinsic material’s nonlinear effects in form electrostriction but also due radiation pressure. In this work, perturbation approach applied analyzing and mechanical response...