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Controlled energy-selected electron capture and release in double quantum dots
(American Physical Society, 2013-12)
Highly accurate quantum electron dynamics calculations demonstrate that energy can be efficiently transferred between quantum dots. Specifically, in a double quantum dot an incoming electron is captured by one dot and the ...
Conductance of a quantum dot in the Kondo regime connected to dirty wires
(American Physical Society, 2012-12)
We study the transport behavior induced by a small bias voltage through a quantum dot connected to one-channel disordered wires by means of a quantum Monte Carlo method. We model the quantum dot by the Hubbard-Anderson ...
Near-threshold properties of the electronic density of layered quantum dots
(American Physical Society, 2012-04)
We present a way to manipulate an electron trapped in a layered quantum dot based on near-threshold properties of one-body potentials. First, we show that potentials with a simple global parameter allow the manipulation ...
Quantum control of a model qubit based on a multi-layered quantum dot
(American Institute of Physics, 2013-04)
In this work we present a model qubit whose basis states are eigenstates of a multilayered quantum dot. We show that the proper design of the quantum dot results in qubit states that have excellent dynamical properties ...
Excitonic states in spherical layered quantum dots
(Elsevier Science, 2020-02)
The properties of excitons formed in spherical quantum dots are studied using the k⋅p method within the Hartree approximation. The spherical quantum dots considered have a central core and several concentric layers of ...
Spin-orbit effects in nanowire-based wurtzite semiconductor quantum dots
(American Physical Society, 2013-07-03)
We study the effect of the Dresselhaus spin-orbit interaction on the electronic states and spin relaxation rates of cylindrical quantum dots defined on quantum wires having wurtzite lattice structure. The linear and cubic ...
Confinement of Dirac electrons in graphene magnetic quantum dots
(IOP Publishing, 2018-08-13)
We characterize the confinement of massless Dirac electrons under axially symmetric magnetic fields in graphene, including zero energy modes and higher energy levels. In particular, we analyze in detail the Aharonov-Casher ...
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
(MDPI, 2019-08-23)
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 ...