Abstract
We image single quantum dot excitations using high-resolution slit-confocal microscopy in order to elucidate the nature of the excited states of single CdTe quantum dots. The results show subsets of single dots distinguished by unique excitation spectra and spatially separated by hundreds of nanometers. We conclude that the dots are superimposed on an extended two-dimensional platelet. Model simulations, which yield common resonances for two quantum dots superimposed on a microscopic wire, support this interpretation.
- Received 9 August 2007
DOI:https://doi.org/10.1103/PhysRevB.76.245320
©2007 American Physical Society