%0 Journal Article
%T Polarizabilities of Impurity Doped Quantum Dots under Pulsed Field: Role of Additive White Noise
%A Surajit Saha
%A Manas Ghosh
%J Open Journal of Microphysics
%P 1-10
%@ 2162-2469
%D 2015
%I Scientific Research Publishing
%R 10.4236/ojm.2015.51001
%X We make a rigorous exploration of the profiles of a few diagonal and
off-diagonal components of linear (</span><i><span style=\"font-family:宋体;\">α</span></i><i><sub><span>xx</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">α</span></i><i><sub><span>yy</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">α</span></i><i><sub><span>xy</span></sub></i><span> and</span><i><span style=\"font-family:宋体;\">α</span></i><i><sub><span>yx</span></sub></i><span>), first nonlinear (</span><i><span style=\"font-family:宋体;\">β</span></i><i><sub><span>xxx</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">β</span></i><i><sub><span>yyy</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">β</span></i><i><sub><span>xyy</span></sub></i><span> and</span><i><span style=\"font-family:宋体;\">β</span></i><i><sub><span>yxx</span></sub></i><span>), and second nonlinear (</span><i><span style=\"font-family:宋体;\">γ</span><sub><span>xxxx</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">γ</span><sub><span>yyyy</span></sub></i><span>, </span><i><span style=\"font-family:宋体;\">γ</span><sub><span>xxyy</span></sub></i><span>and</span><i><span style=\"font-family:宋体;\">γ</span><sub><span>yyxx</span></sub></i><span>)
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 </span><i><span style=\"font-family:宋体;\">β</span></i><i> </i><span>components display greater complexity in their
profiles in comparison with the </span><i><span style=\"font-family:宋体;\">α</span></i> <span>and</span><span> </span><span style=\"font-family:宋体;\">γ</span> <span>counterparts. The presence of noise
prominently enhances the influence of dopant coordinate on the polarizability
profiles, particularly for </span><i><span style=\"font-family:宋体;\">α</span></i><i> </i><span>and </span><i><span style=\"font-family:宋体;\">γ</span> </i><span>components. However,
for </span><i><span style=\"font-family:宋体;\">β</span></i><i> </i><span>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.
%K Quantum Dot
%K Impurity
%K Polarizability
%K Pulsed Field
%K Dopant Location
%K Additive White Noise
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=55072