Controlling transition matrix elements and relaxation in a two-electron double quantum dot

2009 ◽  
Vol 79 (15) ◽  
Author(s):  
Carlos F. Destefani ◽  
Chris McDonald ◽  
Suren Sukiasyan ◽  
Thomas Brabec
Keyword(s):  
Quantum Dot ◽  
Transition Matrix ◽  
Double Quantum ◽  
Matrix Elements ◽  
Double Quantum Dot ◽  
Transition Matrix Elements

Intersublevel Absorption in Stacked n-Type Doped Self-Assembled Quantum Dots

2005 ◽  
Vol 494 ◽  
pp. 37-42
Author(s):  
Dj. Veljković ◽  
M. Tadić ◽  
F.M. Peeters
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Transition Matrix ◽  
Polarized Light ◽  
Matrix Elements ◽  
Quantum Dot Molecules ◽  
Transition Matrix Elements ◽  
Order Of Magnitude ◽  
Spacer Thickness ◽  
Self Assembled

The intersublevel absorption in n-doped InAs/GaAs self-assembled quantum-dot molecules composed of three quantum dots is theoretically considered. The transition matrix elements and the transition energies are found to vary considerably with the spacer thickness. For s polarized light, decreasing the thickness of the spacer between the dots brings about crossings between the transition matrix elements, but the overall absorption is not affected by the variation of the spacer thickness. For p-polarized light and thick spacers, there are no available transitions in the single quantum dot, but a few of them emerge as a result of the electron state splitting in the stacks of coupled quantum dots, which leads to a considerable increase of the transition matrix elements, exceeding by an order of magnitude values of the matrix elements for s-polarized light.

OPTICAL TRANSITIONS IN A PARABOLIC GaAs/Ga1-xAlxAs SUPERLATTICES

2001 ◽  
Vol 08 (03n04) ◽  
pp. 321-325
Author(s):  
ŞAKIR ERKOÇ ◽  
HATICE KÖKTEN
Keyword(s):  
Transition Matrix ◽  
Optical Transition ◽  
Matrix Elements ◽  
Electron States ◽  
Parabolic Potential ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Transition Matrix Elements ◽  
Scf Calculations

We have performed self-consistent field (SCF) calculations of the electronic structure of GaAs/Ga 1-x Al x As superlattices with parabolic potential profile within the effective mass theory. We have calculated the optical transition matrix elements involving transitions from the hole states to the electron states, and we have also computed the oscillator strength matrix elements for the transitions among the electron states.

scholarly journals Large Voltage-Tunable Spin Valve Based on a Double Quantum Dot

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Patrycja Tulewicz ◽  
Kacper Wrześniewski ◽  
Szabolcs Csonka ◽  
Ireneusz Weymann
Keyword(s):  
Quantum Dot ◽  
Spin Valve ◽  
Double Quantum ◽  
Double Quantum Dot

Fano Effect in T-Shaped Double Quantum Dot Structure with Decoherence Effect

2008 ◽  
Vol 49 (3) ◽  
pp. 771-776 ◽  
Author(s):  
Gao Wen-Zhu ◽  
Gong Wei-Jiang ◽  
Zheng Yi-Song ◽  
Liu Yu ◽  
Lü Tian-Quan
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Fano Effect ◽  
Double Quantum Dot ◽  
Decoherence Effect

Electron transport in T-shaped double quantum dot structure

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Mohammed A. A. Abbas ◽  
Lafy F. Al-Badry ◽  
Amin H. Al-Khursan
Keyword(s):  
Electron Transport ◽  
Quantum Dot ◽  
Double Quantum ◽  
Double Quantum Dot

Double quantum dot-like transport in controllably doped graphene nanoribbon

2021 ◽  
Vol 118 (8) ◽  
pp. 083105
Author(s):  
Zhongwang Wang ◽  
Yahua Yuan ◽  
Xiaochi Liu ◽  
Manoharan Muruganathan ◽  
Hiroshi Mizuta ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Graphene Nanoribbon ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Doped Graphene

Geometric phase of an open double-quantum-dot system detected by a quantum point contact

2020 ◽  
Vol 29 (3) ◽  
pp. 030302
Author(s):  
Qian Du ◽  
Kang Lan ◽  
Yan-Hui Zhang ◽  
Lu-Jing Jiang
Keyword(s):  
Quantum Dot ◽  
Geometric Phase ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Quantum Point

scholarly journals Entanglement of two interacting electrons in a double quantum dot

2002 ◽  
Vol 294 (2) ◽  
pp. 108-112 ◽  
Author(s):  
Ping Zhang ◽  
Xiang-Gui Li ◽  
Xian-Geng Zhao
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Interacting Electrons
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