Pair-tunneling states in semiconductor quantum dots: Ground-state behavior in a magnetic field

1998 ◽  
Vol 57 (19) ◽  
pp. 12281-12284 ◽  
Author(s):  
Ernestine Lee ◽  
Aaron Puzder ◽  
M. Y. Chou ◽  
T. Uzer ◽  
David Farrelly
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Ground State ◽  
Semiconductor Quantum Dots ◽  
State Behavior ◽  
Pair Tunneling

scholarly journals Спиновая динамика отрицательно заряженных экситонов в квантовых точках InP/(In,Ga)P в магнитном поле

2020 ◽  
Vol 62 (11) ◽  
pp. 1816
Author(s):  
С.В. Некрасов ◽  
Ю.Г. Кусраев ◽  
И.А. Акимов ◽  
L. Langer ◽  
M. Kotur ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Circular Polarization ◽  
Ground State ◽  
Heavy Hole ◽  
Spin Dynamics ◽  
Nuclear Spins ◽  
Time Resolved ◽  
Exciton Ground State ◽  
Charged Exciton

The dynamics of the photoluminescence negative circular polarization of the InP/(In,Ga)P quantum dots ensemble was studied. We find that in the time-resolved dependences of the polarization there are no oscillations in Voigt magnetic field. Also, with increasing field the polarization declines to zero. Such behavior is attributed to the peculiarities of the negatively charged exciton spin dynamics, particularly, to the fact that in the negatively charged exciton ground state the spin dynamics is governed by the heavy hole. We show that magnetic field depolarization of the photoluminescence occurs once the field of dynamically polarized nuclear spins acting on electron spins is surpassed.

scholarly journals Formation of non-classical optical states in spaser systems under control of an external magnetic field

2019 ◽  
Vol 220 ◽  
pp. 03017
Author(s):  
Mikhail Gubin ◽  
Alexei Prokhorov
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
External Magnetic Field ◽  
Metal Nanoparticles ◽  
Quantum Dynamics ◽  
Semiconductor Quantum Dots ◽  
Exciton Interaction ◽  
Photon States

The work is focused on the investigation of features of quantum dynamics for photons in spaser systems consisting of metal nanoparticles (NP) and semiconductor quantum dots (QDs). The non-classical photon states generation in a three-particle spaser system with nonlinear plasmon-exciton interaction is predicted.

Theory of Addition Spectra in Double Quantum Dots: Single-Particle Tunneling vs Coulomb Interactions

1999 ◽  
Vol 571 ◽  
Author(s):  
M. Rontani ◽  
F. Rossi ◽  
F. Manghi ◽  
E. Molinari
Keyword(s):  
Quantum Dots ◽  
Ground State ◽  
Semiconductor Quantum Dots ◽  
Double Quantum ◽  
Coulomb Correlation ◽  
Coulomb Interactions ◽  
Double Quantum Dots ◽  
Quantum Transitions ◽  
New Phase ◽  
State Configuration

ABSTRACTWe study coupled semiconductor quantum dots theoretically using a generalized Hubbard approach, where intra- and inter-dot Coulomb correlation, as well as tunneling effects are described on the basis of realistic electron wavefunctions. We find that the ground-state configuration of vertically coupled double dots undergoes non-trivial quantum transitions as the inter-dot distance d changes; at intermediate values of d we predict a new phase that should be observable in the addition spectra and in the magnetization changes.

Effects of Confinement on Shallow Impurities in GaAs-Ga 1−xA1xAs Quantum Dots

1992 ◽  
Vol 281 ◽  
Author(s):  
Francisco A. P. Osörio ◽  
Oscar HipöLito ◽  
Francois M. Peeters
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Quantum Dot ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Perpendicular Magnetic Field ◽  
Confinement Potential ◽  
Shallow Impurity ◽  
Shallow Impurities

ABSTRACTThe ground state energy of a shallow impurity placed in the center of a circular quantum dot is studied. The effects of the strength of the confinement potential and a perpendicular magnetic field are investigated theoretically.

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