Semiconductor quantum dots ("solid-state atoms") are promising candidates for quantum computers and future electronic and optoelectronic devices. Quantum dots are zero-dimensional electronic systems and therefore have discrete energy levels, similar to atoms or molecules. The size distribution of quantum dots, however, results in a large inhomogeneous broadening of quantum dot spectra. Work on self-assembled InGaAs/GaAs quantum dots will be presented. Properties of atom-like single-dot states are investigated optically using high spatial and spectral resolution. Single-dot spectra can be used to probe coherence times of exciton states and relaxation processes, both of which are important for future applications.
|Publication status||Published - 2001|
|Event||16th course International School of Atomic and Molecular Spectroscopy - Erice, Italy|
Duration: 17 Jun 1999 → 1 Jul 1999
Conference number: 16
|Course||16th course International School of Atomic and Molecular Spectroscopy|
|Period||17/06/1999 → 01/07/1999|