Excitation kinetics of impurity doped quantum dot driven by Gaussian white noise: Interplay with external field

Influence of Gaussian white noise on the frequency-dependent first nonlinear polarizability of doped quantum dot

“…48 Recently, we have made some thorough investigations of the role of noise on the excitation kinetics of doped QDs. [51][52][53] In the present manuscript, we explore the role of Gaussian white noise-applied to the system additively and multiplicatively (in Stratonovich sense)-on the frequencydependent first nonlinear polarizabilities of doped QD. 54 The frequency-dependent nonlinear optical response properties of these systems merit importance in view of designing devices with potential technological applications.…”

Linear and nonlinear optical absorption coefficients of two-electron spherical quantum dot with parabolic potential

“…As the dot radius decreases, the electron density increases, and so the strength of absorption coefficients increases, because the absorption coefficients is directly proportional to the electron density, see Eqs. (9) and (10). On the other hand, the redshift of the absorptions is related to the expression ω − ℏ ( ) E fi .…”

“…Confined quantum systems have been one of the most important subjects of investigation. Therefore, due to their fundamental properties and their wide range of technological applications [1], a great deal of theoretical works on these structures has been reported extensively by using different methods like a finite element method [2,3], perturbation [4], density functional [5,6], configuration interaction [7,8], variational [9,10], exact solution [11], quantum genetic algorithm and Hartree-Fock Roothaan method [12] and other methods [13,14]. Understanding of the electronic and optical properties in such structures is important because these properties are strongly affected by the presence of impurity.…”

Linear and nonlinear absorption coefficients of spherical two-electron quantum dot

“…QDs are known as artificial atoms because of having shell structures and discrete energy levels, and QDs play an important role in optoelectronic and microelectronic devices. Therefore, many authors have studied the binding energies, the effects of electric and magnetic field and other physical properties of oneelectron QD with various size and shapes [1][2][3][4][5][6]. In one-electron QDs, linear and nonlinear absorption coefficients have attracted the attention of researchers both experimentally and theoretically [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], because QDs have the potential for the device applications such as farinfrared photodetectors, laser amplifiers(wavelength 10m), optical memories, light emitting diodes and high-speed electrooptical modulators [26][27][28].…”