R. Hafenbrak
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View article: Polarization anisotropic luminescence of tunable single lateral quantum dot molecules
Polarization anisotropic luminescence of tunable single lateral quantum dot molecules Open
We investigate the photoluminescence polarization anisotropy of self-assembled individual lateral InGaAs/GaAs quantum dot molecules. In contrast to similarly grown single quantum dots, the dot molecules exhibit a remarkable degree of linea…
View article: Effects of variable anisotropic-strain on the emission of neutral excitons confined in epitaxial quantum dots
Effects of variable anisotropic-strain on the emission of neutral excitons confined in epitaxial quantum dots Open
We study the effect of elastic anisotropic biaxial strain on the light emitted by neutral excitons confined in different kinds of semiconductor quantum dots (QDs). We find that the light polarization rotates by up to 80 degree and the exci…
View article: MOVPE grown InGaAs quantum dots of high optical quality as seed layer for low-density InP quantum dots
MOVPE grown InGaAs quantum dots of high optical quality as seed layer for low-density InP quantum dots Open
To achieve a low densitiy of optically active InP-quantum dots we used InGaAs islands embedded in GaAs as a seed layer. First, the structural InGaAs quantum dot properties and the influence of the annealing technique was investigated by at…
View article: Triggered polarization-entangled photon pairs from a single quantum dot up to 30 K
Triggered polarization-entangled photon pairs from a single quantum dot up to 30 K Open
The radiative biexciton–exciton decay in a semiconductor quantum dot (QD) has the potential of being a source of triggered polarization-entangled photon pairs. However, in most cases the anisotropy-induced exciton fine structure splitting …