Canadian Journal of Physics

Plasmonic electromagnetic-induced transparency from double quantum dot–metal nanoparticle structure

Asaad H. Hameed, Amin Habbeb AL-Khursan

Published Jun 13, 2025• 1 citation

Abstract

This work studies the energy absorption rates in the case of plasmonic electromagnetically induced transparency (PEIT) from the double quantum dot (DQD)–metal nanoparticle (MNP) system. The orthogonalized plane wave between the wetting layer (WL) and QD transitions is considered. PEIT is not attained under a single applied field. It is obtained under a probe, pump, and two tunneling components. Two asymmetric PEIT windows can result from the transitions between the sixth energy states of the DQD structure. A huge Qtotal value (10−5 W) under 0.2 W/cm2 is obtained. Compared with other works, this result is higher by four orders, and the power applied is less by six orders than that used in earlier works. Our results exceed those obtained with double MNP-QD, QD-six MNP, and MNP-ten QDs. Such a vast result is ascribed to the manipulation flexibility in the DQD system, which is not found in all other structures. This possibility increases quantum correlation and the nonlinear optical properties of the DQD and the DQD–MNP system. The QD ( QQD) and MNP ( QMNP) absorption energy rates are also studied. Applying two tunneling components restores the system to peak at resonance due to the coupled work of the two dots as a DQD system. Strong plasmon–exciton coupling occurs when the probe power becomes considerable. Thus, the probe must not be so small.

DOI: 10.1139/cjp-2024-0196

Related papers

Controlling the Pump-Probe Optical Response in Asymmetric Tunneling-Controlled Double Quantum Dot Molecule—Metal Nanoparticle Hybrids

Spyridon G. Kosionis, Emmanuel Paspalakis

In the present work, we investigate the modified nonlinear pump-probe optical properties due to the excitonic–plasmonic interaction of a double semiconductor quantum dot (SQD) molecule coupled to a metal nanoparticle (MNP). More specifically, we study the absorption and the dispersion spectra of a weak electromagnetic field in a hybrid structure with two counterparts, a molecule of two coupled SQDs, and a spherical MNP driven by a field of high intensity. We solve the relevant density matrix equations, calculate the first-order optical susceptibility of the probe field in the strong pumping regime, and investigate the way in which the distance between the two counterparts modifies the optical response, for a variety of values of the physical constants of the system, including the pump-field detuning, the tunnelling rate, and the energy separation gap associated with the excited states of the coupled SQDs.

Applied SciencesDec 9, 202111 citations

Tunneling induced transparency and slow light in an asymmetric double quantum dot molecule—Metal nanoparticle hybrid

Spyridon G. Kosionis, Emmanuel Paspalakis

We investigate the optical properties appearing in a nanostructure that is composed of an asymmetric double semiconductor quantum dot (SQD) molecule and a metal nanoparticle (MNP). The profile of the total linear absorption spectrum is proportional to the SQD contribution, while the MNP contribution is important. The profile of the doublet of resonances detected on the total linear absorption spectrum creates a transparency window. The doublet is asymmetric for small SQD-MNP distances and has a narrow peak and a wide peak. The width of the transparency window is increased, either with the enhancement of the rate at which the electron tunneling effect takes place within the double SQD molecule or with the decrease of the distance that separates the SQD molecule from the center of the MNP. The steep slope detected on the linear dispersion spectrum for frequencies laying within the transparency window owes its presence to the tunneling induced transparency and leads to slow light production. The corresponding value of the slow down factor is maximized for low values of the electron tunneling rate as well as for low center-to-center distances between the components of the hybrid nanostructure.

Journal of Applied PhysicsDec 28, 202311 citations

Electromagnetically induced grating in semiconductor quantum dot and metal nanoparticle hybrid system by considering nonlocality effects

Tayebeh Naseri

The optical polarization from a hybrid system including a closely spaced spherical SQD (modeled as a three-level V-type system) and a metal nanoparticle which are considered classically and are connected by the dipole–dipole interaction mechanism is investigated. The interaction between the SQD and the MNP shows an interesting optical response. In the weak probe field regime and MNP nonlocality correction, the absorption spectrum of the hybrid system exhibits an EIT window with two absorption peaks and the plasmon-assisted quantum interference plays an important role in the position and amplitude of these peaks, which are intensely altered by including the nonlocal effects. The probe diffraction grating is created based on the excitons-induced transparency by applying a standing-wave coupling field. The results of this study are useful in numerous areas of all-optical communications.

Journal of theoretical and applied physicsApr 17, 20209 citations

Plasmonic electromagnetically induced transparency in metallic nanoparticle–quantum dot hybrid systems

Ali Hatef, Seyed M. Sadeghi, Mahi R. Singh

We study the variation of the energy absorption rate in a hybrid semiconductor quantum dot-metallic nanoparticle system doped in a photonic crystal. The quantum dot is taken as a three-level V-configuration system and is driven by two applied fields (probe and control). We consider that one of the excitonic resonance frequencies is near to the plasmonic resonance frequency of the metallic nanoparticle, and is driven by the probe field. The other excitonic resonance frequency is far from both the plasmonic resonance frequency and the photonic bandgap edge, and is driven by the control field. In the absence of the photonic crystal we found that the system supports three excitonic-induced transparencies in the energy absorption spectrum of the metallic nanoparticle. We show that the photonic crystal allows us to manipulate the frequencies of such excitonic-induced transparencies and the amplitude of the energy absorption rate.

NanotechnologyJan 17, 201294 citations

Peak susceptibility in the quantum dot-metal nanoparticle hybrid system under an electromagnetically induced grating

Haneen Akram, Suha Hadi, Amin Habbeb AL-Khursan

The peak susceptibility of the electromagnetically induced grating (EIG) in the double quantum dot-metal nanoparticle (DQD-MNP) system, which has been very limitedly studied, is investigated in this work. The behavior of peak EIG susceptibility versus interparticle distance and metal nanoparticle MNP radius , which summarizes the susceptibility spectra along these parameters, is investigated for the first time. The results show that the peak DQD susceptibility is shifted to appear at a longer value of the separating DQD-MNP distance when the MNP radius is larger. The shift in where the highest peak appears is in the same range as the increment in the MNP radius . This behavior demonstrates how the MNP field alters the DQD susceptibility. The MNP peak susceptibility is too small. Changing is less effective than . The results show that increasing the probe field shifts the peak to a wider MNP radius. Switching from a parallel probe field to a perpendicular field also gives a similar increase. This behavior occurs when the MNP and DQD fields interfere. The results specify the radius and distance at which the structure gives a high response, which are essential for applications requiring high yield. The main effect of the MNP is an increase in the peak height and a shift of the highest peak to a longer DQD-MNP distance . While it is well known that susceptibility decreases with increasing distance, this study shows how the peak susceptibility varies with the separating distance R . This phenomenon has not been studied previously. The behavior of peak susceptibility versus and summarizes the spectra of susceptibility along these parameters, showing the importance of such figures. The results show that the effective Rabi field, not the applied Rabi field, is affecting the DQD-MNP behavior; it depends on the cubic ratio of . The peak susceptibility depends on this ratio and is arranged accordingly.

Physics OpenSep 29, 20260 citations

Susceptibility in a Coupled Double Quantum Dot-Metal Nanoparticle System under Standing Wave Field

Haneen Akram, Muwaffaq Abdullah, Elmustapha Feddi +2 more

The main purpose of this work is studying the linear Susceptibility in the hybrid nanostructure that composed of a dual quantum dot (DQD) and metal nanoparticle (MNP) hybrid system under a standing-wave field. In our model, we used density matrix equations by taking into our account the interaction between excitons and surface plasmons. The proposed DQD is composed of two QDs. Each QD contains an InAs QD with a disk shape. The interaction between the QD and the wetting layer (WL) is taken into consideration. The application of the standing wave field on DQD-MNP hybrid system was modeled and examined. The susceptibility of thehybridDQD-MNPsystem reduced by the pump field under a standing-wave field. The high susceptibility obtained with a wide MNP radius. An interesting result was shown in the inversion of the grating period with the tunneling component in the conduction band. The smaller size of DQD gave us high susceptibility due to the quantization effect.

University of Thi-Qar Journal of ScienceJun 1, 20243 citations