73 citations · 313 across the 8 of their papers we have counts for
8 papers
Polarization dynamics in quantum dots: The role of dark excitons
E. Tsitsishvili, H. Kalt
We study an impact of the fine structure of the heavy--hole ground state exciton confined in semiconductor quantum dots on the photoluminescence polarization dynamics solving the r…
A spintronic source of circularly polarized single photons
Pablo Asshoff, Andreas Merz, Heinz Kalt +1
We present a spintronic single photon source which emits circularly polarized light, where the helicity is determined by an applied magnetic field. Photons are emitted from an InGa…
Exciton spin relaxation in single semiconductor quantum dots
E. Tsitsishvili, R. v. Baltz, H. Kalt
We study the relaxation of the exciton spin (longitudinal relaxation time ) in single asymmetrical quantum dots due to an interplay of the short--range exchange interaction…
Hot exciton transport in ZnSe quantum wells
Hui Zhao, Sebastian Moehl, Sven Wachter +1
The in-plane transport of excitons in ZnSe quantum wells is investigated directly by microphotoluminescence in combination with a solid immersion lens. Due to the strong Froehlich…
Coherence Length of Excitons in a Semiconductor Quantum Well
Hui Zhao, Sebastian Moehl, Heinz Kalt
We report on the first experimental determination of the coherence length of excitons in semiconductors using the combination of spatially resolved photoluminescence with phonon si…
Effect of quantum confinement on exciton-phonon interactions
Hui Zhao, Sven Wachter, Heinz Kalt
We investigate the homogeneous linewidth of localized type-I excitons in type-II GaAs/AlAs superlattices. These localizing centers represent the intermediate case between quasi-two…