Now showing items 31-40 of 1826
Quantum interference effects on the electronic transmission through quantum dot molecules
The fabrication and control of devices at nanometric scale emphasizesthe importance of quantum effects on the electronic motion in semiconductor heterostructures. The size of the systems through which the electrons move ...
SU(4) Kondo entanglement in double quantum dot devices
(American Physical Society, 2017-08-28)
We analyze, from a quantum information theory perspective, the possibility of realizing an SU(4) entangled Kondo regime in semiconductor double quantum dot devices. We focus our analysis on the ground-state properties and ...
Thermodynamics and Steady State of Quantum Motors and Pumps Far from Equilibrium
In this article, we briefly review the dynamical and thermodynamical aspects of different forms of quantum motors and quantum pumps. We then extend previous results to provide new theoretical tools for a systematic study ...
Superadiabatic spin-preserving control of a single-spin qubit in a double quantum dot with spin–orbit interaction
(IOP Publishing, 2019-10)
A protocol for controlling the localization of an electron with a fixed projection of spin between two quantum dots in a material with spin-orbit (SO) interaction is studied. Due to SO coupling, the manipulation of the ...
Electronic transitions in disk-shaped quantum dots induced by twisted light
(American Physical Society, 2009-04)
We theoretically investigate the absorption and emission of light carrying orbital angular momentum (twisted light) by quasi-two-dimensional (disk-shaped) quantum dots in the presence of a static magnetic field. We calculate ...
Luminescence Enhancement of Carboxyl-Coated CdTe Quantum Dots by Silver Nanoparticles
Metallic nanoparticles (NPs) have been used to improve the sensibility of biosensors and bioassays either by enhancing radiative emission or inducing quenching process on fluorescent probes. The aim of this research was ...
Restricted and unrestricted Hartree–Fock approaches applied to spherical quantum dots in a magnetic field
The Roothaan and Pople–Nesbet approaches for real atoms are adapted to quantum dots in the presence of a magnetic field. Single-particle Gaussian basis sets are constructed, for each dot radius, under the condition of ...
A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
(Sociedad Chilena de Química, 2009)
Effect of tunneling transfer on thermal redistribution of carriers in hybrid dot-well nanostructures
(American Institute of Physics - AIPCollege Park, 2013-01)
The thermally induced redistribution of carriers between quantum well (QW) and quantum dot (QD) layers in a hybrid dot-well system composed of InAs QDs and an InGaAs QW is studied by means of photoluminescence (PL) ...
Landau-Zener transitions in a semiconductor quantum dot
(Taylor & Francis Ltd, 2009-03)
We study the transitions between neighboring energy levels in a quasi-one-dimensional semiconductor quantum dot with two interacting electrons in it, when it is subject to a linearly time-dependent electric field. We analyze ...