Electronic structure of quantum dots

SM Reimann, M Manninen - Reviews of modern physics, 2002 - APS
The properties of quasi-two-dimensional semiconductor quantum dots are reviewed.
Experimental techniques for measuring the electronic shell structure and the effect of …

Regulated and entangled photons from a single quantum dot

O Benson, C Santori, M Pelton, Y Yamamoto - Physical review letters, 2000 - APS
We propose a new method of generating nonclassical optical field states. The method uses
a semiconductor device, which consists of a single quantum dot as active medium …

Optical emission from a charge-tunable quantum ring

RJ Warburton, C Schäflein, D Haft, F Bickel, A Lorke… - Nature, 2000 - nature.com
Quantum dots or rings are artificial nanometre-sized clusters that confine electrons in all
three directions. They can be fabricated in a semiconductor system by embedding an island …

Spectroscopy of nanoscopic semiconductor rings

A Lorke, RJ Luyken, AO Govorov, JP Kotthaus… - Physical review …, 2000 - APS
Making use of self-assembly techniques, we realize nanoscopic semiconductor quantum
rings in which the electronic states are in the true quantum limit. We employ two …

Voltage-controlled optics of a quantum dot

A Högele, S Seidl, M Kroner, K Karrai, RJ Warburton… - Physical review …, 2004 - APS
We show how the optical properties of a single semiconductor quantum dot can be
controlled with a small dc voltage applied to a gate electrode. We find that the transmission …

Coulomb interactions in small charge-tunable quantum dots: A simple model

RJ Warburton, BT Miller, CS Dürr, C Bödefeld, K Karrai… - Physical Review B, 1998 - APS
We present perturbation theory results for the Coulomb interactions between electrons, and
between electrons and holes, in small quantum dots. The results are used to model both …

Charged excitons in self-assembled semiconductor quantum dots

RJ Warburton, CS Dürr, K Karrai, JP Kotthaus… - Physical review …, 1997 - APS
Interband excitations of an ensemble of InAs self-assembled quantum dots have been
directly observed in transmission experiments. The dots are embedded in a field-effect …

Electron pair in a Gaussian confining potential

J Adamowski, M Sobkowicz, B Szafran, S Bednarek - Physical Review B, 2000 - APS
Two electrons confined in quantum dots (QD's) are studied under an assumption of a
Gaussian confining potential and its parabolic approximation. We have calculated the …