Polarizabilities of Impurity Doped Quantum Dots under Pulsed Field: Role of Additive White Noise - Open Journal of Microphysics

OJM > Vol.5 No.1, February 2015

Polarizabilities of Impurity Doped Quantum Dots under Pulsed Field: Role of Additive White Noise ()

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DOI: 10.4236/ojm.2015.51001 4,540 Downloads 5,615 Views

Author(s)

Surajit Saha¹, Manas Ghosh^2*

Affiliation(s)

¹Department of Chemistry, Bishnupur Ramananda College, Bishnupur, India.
²Department of Chemistry, Physical Chemistry Section, Visva Bharati University, Santiniketan, India.

ABSTRACT

We make a rigorous exploration of the profiles of a few diagonal and off-diagonal components of linear (α_xx, α_yy, α_xy andα_yx), first nonlinear (β_xxx, β_yyy, β_xyy andβ_yxx), and second nonlinear (γ_xxxx, γ_yyyy, γ_xxyyandγ_yyxx) polarizabilities of quantum dots under the influence of external pulsed field. Simultaneous presence of additive white noise has also been considered. The quantum dot contains dopant described by a Gaussian potential. The numbers of pulse and the dopant location have been found to fabricate the said profiles jointly. The β components display greater complexity in their profiles in comparison with the α and γ counterparts. The presence of noise prominently enhances the influence of dopant coordinate on the polarizability profiles, particularly for α and γ components. However, for β components, the said influence becomes quite evident both in the presence and absence of additive noise. The study reveals some means of achieving stable, enhanced, and often maximized output of noise-driven linear and nonlinear polarizabilities.

KEYWORDS

Quantum Dot, Impurity, Polarizability, Pulsed Field, Dopant Location, Additive White Noise

Share and Cite:

Saha, S. and Ghosh, M. (2015) Polarizabilities of Impurity Doped Quantum Dots under Pulsed Field: Role of Additive White Noise. Open Journal of Microphysics, 5, 1-10. doi: 10.4236/ojm.2015.51001.

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