Tailoring second-order nonlinear optical effects in coupled quantum dot-metallic nanosphere structures using the Purcell effect

Altering Degenerate Four-Wave Mixing and Third-Harmonic Generation in a Coupled Quantum Dot–Metallic Nanoparticle Structure with the Use of the Purcell Effect

“…In Figure 1 we present the modification in the quantum dot's spontaneous decay rate for two different quantum dot's electric dipole directions, along the x-axis (γ x ) and along the z-axis (γ z ), as a function of distance d. The obtained behavior is typical, see, for example, refs. [4][5][6]9,10]. Both decay rates are enhanced for small distances between the quantum dot and the metal nanoparticle, but as this distance increases the decay rate corresponding to the electric dipole direction along the x-axis decreases monotonically and the value of the decay rate remains larger than the spontaneous decay rate in the absence of the metallic nanoparticle γ 0 .…”

“…The modification of the optical properties of semiconductor quantum dots near plasmonic nanostructures have attracted significant attention in recent years due to the several potential applications of the coupled nanostructures in optoelectronics, biophotonics and quantum technologies, including sensors, light harvesting, quantum information processing and quantum communication, imaging, photocatalysis, solar cells, and others [1]. One of the methods for modifying the nonlinear optical susceptibilities in quantum dots near plasmonic nanostructures uses the change of the spontaneous decay rates of quantum emitters due to the Purcell effect in a tailored nanophotonic environment [2][3][4][5][6]. This method was initially proposed by Bermel et al [7] for quantum dots in photonic crystals and was later explored for the modification of linear and nonlinear absorption and dispersion [2,4], second- [5] and third-harmonic generation [6], and nonlinear optical rectification [3,5] of quantum dots and molecules near simple and complex plasmonic nanostructures.…”

“…In this paper, following the approach of Refs. [2][3][4][5][6][7], we study the modification of the phenomena of degenerate four-wave mixing and third-harmonic generation in a quantum dot close to a relatively large gold nanosphere. In our study we use a metallic nanosphere with radius 60 nm, which behaves as a nanophotonic environment and alters (enhances or suppresses) the spontaneous decay rate of the nearby quantum dot.…”

Effective Control of the Optical Bistability of a Three-Level Quantum Emitter near a Nanostructured Plasmonic Metasurface

“…Various phenomena have been studied in such media, including the manipulation of spontaneous emission [13][14][15][16], Fano effects in energy absorption [17][18][19][20], slow light and optical transparency [21][22][23], enhancement of the refractive index [24], modification and enhancement of the Kerr nonlinearity [25][26][27][28], four-wave-mixing [29,30], inversionless gain [31][32][33][34][35][36], OB or optical multistability (OM) [37][38][39][40][41][42][43][44][45][46][47][48][49], and many others [50][51][52]. The contemporary fabrication methods [53][54][55][56] for realizing plasmonic nanostructures incorporating quantum emitters [57] enable the experimental verification of the above phenomena.…”

Binding Energy And Absorption of Donor Impurity In Spherical GaAs/AlxGa1-x As Quantum Dots With Konwent Potential

“…Therefore, QDs are materials with great optical response [26]. This case prompted researchers to investigate optical phenomena such as optical absorption [27,28], optical rectification [29][30][31], second and thirdorder harmonic generations [32][33][34] and refractive index changes [35][36][37]. Optical absorption coefficients (OACs) of QDs which including impurity have different confinement potentials have been previously studied by many authors [38][39][40][41][42][43][44][45][46][47][48][49][50].…”