Utilizing COMSOL Wave Functions to Improve Microscopic Computations for Double-Quantum-Dot Spin Qubit Emad. S. Taiyh, Sabah M.M. Ameen Basrah Journal of Science, 2025 In microscopic computations for double-quantum dot spin qubits, the Heitler-London (HL) and Hund-Mulliken (HM) approximations are commonly used. Our study assesses the exchange interaction between triplet and singlet states within a coupled double quantum dots (DQDs) near a (Si/SiO2) interface, employing COMSOL Multiphysics wave functions. We utilize two different models for the DQDs potential based on the inter-dot distance (d). These computations are conducted within a specific area of interest, considering various potentials. Our results are compared to scenarios where Fock-Darwin (FD) states are used and the solution to a one-dimensional(1D) Schrödinger equation is precisely known. Our findings demonstrate the efficiency of the employed technique and provide valuable insights into the reliability and accuracy of the chosen computational strategy.
The impacts of ENSO and IOD on the MSL of the Arabian gulf and the Arabian Sea by using satellite altimetry data Atyaf Mohammed Abdul Mutalib, Sabah M. M. Ameen, Ali B. Mahmood Ilmu Kelautan Indonesian Journal of Marine Sciences, 2020 The main objective for the current research is to determine the linear trends of the mean sea level (MSL) resulting from the influence of the Southern Oscillation of El Niño (ENSO) and the Indian Ocean dipole (IOD), which have increased in recent times due to increased global warming using satellite altimetry of MSL data. Statistical time series technique has been used. The standard ordinary univariate and bivariate linear regression method as well as Pearson correlation were used. Linear trends for the positive phase of IOD were detected on mean sea level while no linear trends of ENSO were detected in the Arabian Gulf. On the other side, linear trends of the negative phases of IOD and ENSO were detected on mean sea level in the Arabian Sea over the period 1993-2013. It is most important for climate research to provide accurate predictions of sea level rise in the coming years and plan the activities to lessen the disasters before they happen.
Plasmonic Quantum Dot Nanocavity Laser: Hybrid Modes Jamal N. Jabir, S. M. M. Ameen, Amin Habbeb Al-Khursan Plasmonics, 2020 The hybrid modes in the plasmonic quantum dot (QD) laser are modeled using the Marctili method. The model is then used to study the mode characteristics. The modes are going to cutoff point at zero propagation constant, while it goes to surface plasmon polaritons (SPPs) mode at higher photon energy. This behavior was different from that of waveguide modes shown in the dielectric waveguide. At plasmon resonance, hybrid mode is exactly one mode: surface plasmon polariton mode (perfect electric conductor).
Plasmonic Quantum Dot Nanolaser: Effect of “Waveguide Fermi Energy” Jamal N. Jabir, S. M. M. Ameen, Amin Habbeb Al-Khursan Plasmonics, 2019 This study models quantum dot (QD) plasmonic nanolaser. A metal/semiconductor/metal (MSM) structure was considered to attain plasmonic nanocavity. The active region (semiconductor layers) contains the following: QD, wetting layer (WL), and barrier layers. Band alignment between layers was used to predict their parameters. Momentum matrix element for transverse magnetic (TM) mode in QD structure was formulated. Waveguide Fermi energy was introduced and formulated, for the first time, in this work to cover the waveguide contribution (Ag metal layer) in addition to the active region. The high net modal gain was obtained when the waveguide Fermi energy was considered which meant that the increment comes from the material gain, not from the confinement factor. The obtained results were reasoned the high gain due to the change in waveguide Fermi energy in the valence band, where the valence band QD states are fully occupied that are referring to an efficient hole contribution.
Modeling of dielectric function in plasmonic quantum dot nanolaser Jamal N. Jabir, S. M. M. Ameen, Amin Habbeb Al-Khursan Optical and Quantum Electronics, 2019 In this work we present a model of the dielectric function in plasmonic quantum dot (QD) nanolaser. A metal/semiconductor/metal structure was considered to attain plasmonic nanocavity with active region containing: QD, wetting layer and barrier. The dielectric function was calculated for both metal (Ag) and QD structure. The propagation constant of surface plasmon polariton (SPP) at the interface of Ag/InAs-QD structure was calculated and the dispersion relation of the plasmonic QD structure was evaluated. For frequencies far from plasma one, the gap between real and imaginary parts was large and a deviation from linear relation was obvious. The SPP field was strongly localized at the interface due to the effect of zero-dimensional QD structure which has application in the super-resolution and best sensitivity in optical imaging. Results of propagation length of SPP (\\(L_{spp}\\)) also support this. According to the \\(L_{spp}\\) results, the damping in the SPP energy was low in the Ag/InAs-QD compared to that in the Ag/air interface. The obtained results are in the range of experimental ones.
Utilizing COMSOL Wave Functions to Improve Microscopic Computations for Double-Quantum-Dot Spin Qubit ES Taiyh, SMM Ameen Basrah Journal of Science 43 (3), 784-803 , 2025 2025
Calculation of Exchange Energy in Double Quantum Dots Using COMSOL Wave Functions. E Taiyh, SMM Ameen Journal of Kufa-Physics 16 (2) , 2024 2024
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP W Shneen, SM Ameen Iraqi Journal of Natural Sciences and Nanotechnology 5, 88-102 , 2024 2024 Citations: 1
Controllable surface Plasmon polariton propagation length using a suitable quantum dot material WF Shneen, SMM Ameen Brazilian Journal of Physics 54 (2), 59 , 2024 2024 Citations: 3
Using Quantum Dot Structure and Suitable Material for Increasing Propagation Length of Surface Plasmon Polariton WF Shneen, SMM Ameen International Conference on Physics and Mechanics of New Materials and Their … , 2023 2023
Variable optical buffer using EIT in three level system based on semiconductor conical quantum dots AS MM JOURNAL OF KUFA-PHYSICS Учредители: University of Kufa 12 (1), 50-60 , 2023 2023 Citations: 1
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP A WFS, SMM Ameen 2022
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP WFS Al-janaby, SMM Ameen 2022
The Impacts of the Pacific Southern Oscillation and the Indian Ocean Dipole on the Mean Sea Level of the Arabian Gulf and the Arabian Sea. AM Abdul Muttalib, SMM Ameen, AB Mahmood Journal of King Abdulaziz University: Marine Sciences 30 (2) , 2020 2020 Citations: 7
The Impacts of ENSO and IOD on the MSL of The Arabian Gulf and The Arabian Sea by Using Satellite Altimetry Data ABM Atyaf M. Abdul Muttalib, Sabah M. M. Ameen Indonesian Journal of Marine Sciences 25 (4), 143-147 , 2020 2020 Citations: 4
Voltage-Controlled Slow Light via Resonant Tunneling Induced Transparency in Vertically aligned Conical Double Quantum Dot Molecules NS Yaqoob, SMM Ameen Basrah Journal of Science 37 (3), 335-355 , 2019 2019
A Plasmonic quantum dot nanolaser: effect of “waveguide Fermi energy” on material gain JN Jabir, SMM Ameen, AH Al-Khursan Journal of Kufa-Physics 11 (02), 102-114 , 2019 2019
Modeling of dielectric function in plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, AH Al-Khursan Optical and Quantum Electronics 51 (12), 396 , 2019 2019 Citations: 12
Giant Net Modal Gain of plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, A Habbeb Al-Khursan Journal of Physics: Conference Series 1294 (2), 022031 , 2019 2019 Citations: 1
Ultrahigh gain from plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, AH Al-Khursan Journal of Physics: Conference Series 1234 (1), 012019 , 2019 2019 Citations: 1
A Simple and General Analytical Expression for Calculating Crosstalk in Multiwaveguide Directional Couplers Using Finite Differences Method SMMAMM Ameen, MH Mansour Journal of Kufa-Physics 11 (02), 6-14 , 2019 2019
A simple and general analytical expression for calculation crosstalk in multilayer waveguide DC using FD method SMM Ameen, MH Mansour Accepted for publication in J. Kufa-Phy. , 2019 2019
MOST CITED SCHOLAR PUBLICATIONS
Kerr effect in Y-configuration double-quantum-dot system B Al-Nashy, SMM Amin, AH Al-Khursan Journal of the Optical Society of America B 31 (8), 1991-1996 , 2014 2014 Citations: 43
Kerr dispersion in a Y-configuration quantum dot system B Al-Nashy, SMM Ameen, AH Al-Khursan Journal of Optics 16 (10), 105205 , 2014 2014 Citations: 23
Modeling of dielectric function in plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, AH Al-Khursan Optical and Quantum Electronics 51 (12), 396 , 2019 2019 Citations: 12
The Impacts of the Pacific Southern Oscillation and the Indian Ocean Dipole on the Mean Sea Level of the Arabian Gulf and the Arabian Sea. AM Abdul Muttalib, SMM Ameen, AB Mahmood Journal of King Abdulaziz University: Marine Sciences 30 (2) , 2020 2020 Citations: 7
The Impacts of ENSO and IOD on the MSL of The Arabian Gulf and The Arabian Sea by Using Satellite Altimetry Data ABM Atyaf M. Abdul Muttalib, Sabah M. M. Ameen Indonesian Journal of Marine Sciences 25 (4), 143-147 , 2020 2020 Citations: 4
Controllable surface Plasmon polariton propagation length using a suitable quantum dot material WF Shneen, SMM Ameen Brazilian Journal of Physics 54 (2), 59 , 2024 2024 Citations: 3
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP W Shneen, SM Ameen Iraqi Journal of Natural Sciences and Nanotechnology 5, 88-102 , 2024 2024 Citations: 1
Variable optical buffer using EIT in three level system based on semiconductor conical quantum dots AS MM JOURNAL OF KUFA-PHYSICS Учредители: University of Kufa 12 (1), 50-60 , 2023 2023 Citations: 1
Giant Net Modal Gain of plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, A Habbeb Al-Khursan Journal of Physics: Conference Series 1294 (2), 022031 , 2019 2019 Citations: 1
Ultrahigh gain from plasmonic quantum dot nanolaser JN Jabir, SMM Ameen, AH Al-Khursan Journal of Physics: Conference Series 1234 (1), 012019 , 2019 2019 Citations: 1
Utilizing COMSOL Wave Functions to Improve Microscopic Computations for Double-Quantum-Dot Spin Qubit ES Taiyh, SMM Ameen Basrah Journal of Science 43 (3), 784-803 , 2025 2025
Calculation of Exchange Energy in Double Quantum Dots Using COMSOL Wave Functions. E Taiyh, SMM Ameen Journal of Kufa-Physics 16 (2) , 2024 2024
Using Quantum Dot Structure and Suitable Material for Increasing Propagation Length of Surface Plasmon Polariton WF Shneen, SMM Ameen International Conference on Physics and Mechanics of New Materials and Their … , 2023 2023
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP A WFS, SMM Ameen 2022
Long-range hybrid plasmonic waveguide of graded-index InGaAsP active layer based on InP WFS Al-janaby, SMM Ameen 2022
