Impurity controlled excitations in doped quantum dot exposed to periodic external perturbation

Datta, Nirmal Kr; Konar, Debashis; Ghosh, Manas

doi:10.1016/j.mee.2011.07.004

Cited by 3 publications

(3 citation statements)

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“…The use of such Gaussian impurity potential is quite wellknown [32][33][34]. The time-independent Schrödinger equation has been solved using variational method expressing the trial wave function ( , ) as a superposition of the product of harmonic oscillator eigenfunctions [17,18]. In the linear variational calculation, an appreciably large number of basis functions have been exploited after making the required convergence test.…”

Section: Methodsmentioning

confidence: 99%

“…The phenomenon also plays some important role in the population transfer among the exciton states in QD [16]. Of late, we have performed some inspections which deal with excitation in doped QDs that have been triggered by some external time-varying field [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Naturally the quantity ( ) = 1 − 0 ( ) serves as a measure of excitation. In consequence, the quantity ex ( ) = / serves as the time-dependent rate of excitation from which the time-average rate of excitation [⟨ ex ⟩ = (1/ ) ∫ 0 ex ( ) ] can be calculated, where is the total time of dynamic evolution[17,18].…”

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confidence: 99%

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Excitation Kinetics of Impurity Doped Quantum Dot Triggered by Gaussian White Noise

Pal¹,

Sinha

Ganguly³

et al. 2013

ISRN Condensed Matter Physics

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We investigate the excitation kinetics of a repulsive impurity doped quantum dot initiated by the application of Gaussian white noise. In view of a comprehensive research we have considered both additive and multiplicative noise (in Stratonovich sense). The noise strength and the dopant location have been found to fabricate the said kinetics in a delicate way. Moreover, the influences of additive and multiplicative nature of the noise on the excitation kinetics have been observed to be prominently different. The investigation reveals emergence of maximization and saturation in the excitation kinetics as a result of complex interplay between various parameters that affect the kinetics. The present investigation is believed to provide some useful perceptions of the functioning of mesoscopic systems where noise plays some profound role.

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