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13 papers · 2 filters
Spin-3/2 physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings
D. Csontos, P. Brusheim, U. Zuelicke +1
We present a detailed theoretical study of the electronic spectrum and Zeeman splitting in hole quantum wires. The spin-3/2 character of the topmost bulk-valence-band states result…
Density-matrix theory of the optical dynamics and transport in quantum cascade structures: The role of coherence
C. Weber, A. Wacker, A. Knorr
The impact of coherence on the nonlinear optical response and stationary transport is studied in quantum cascade laser structures. Nonequilibrium effects such as pump-probe signals…
Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field
Jonas Nyvold Pedersen, Dan Bohr, Andreas Wacker +3
We study the competition between interference due to multiple single-particle paths and Coulomb interaction in a simple model of an Anderson-like impurity with local-magnetic-field…
On the renormalization of contact interactions for the configuration-interaction method in two dimensions
M. Rontani, G. Eriksson, S. Åberg +1
The configuration interaction (CI) method for calculating the exact eigenstates of a quantum-mechanical few-body system is problematic when applied to particles interacting through…
Polarization Properties of Single Quantum Dots in Nanowires
M. H. M. van Weert, N. Akopian, F. Kelkensberg +9
We study the absorption and emission polarization of single semiconductor quantum dots in semiconductor nanowires. We show that the polarization of light absorbed or emitted by a n…
Reduced and projected two-particle entanglement at finite temperatures
P. Samuelsson, I. Neder, M. Buttiker
We present a theory for two-particle entanglement production and detection in mesoscopic conductors at finite temperature. In contrast to the zero temperature limit, the entangleme…