Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked InAs-GaAs Quantum Dot Pairs
Abstract
We present photoluminescence studies of the molecular neutral biexciton-exciton spectra of individual vertically stacked InAs/GaAs quantum dot pairs. We tune either the hole or the electron levels of the two dots into tunneling resonances. The spectra are described well within a few-level, few-particle molecular model. Their properties can be modified broadly by an electric field and by structural design, which makes them highly attractive for controlling nonlinear optical properties.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 2007
- DOI:
- 10.1103/PhysRevLett.99.197402
- arXiv:
- arXiv:0705.1205
- Bibcode:
- 2007PhRvL..99s7402S
- Keywords:
-
- 78.67.Hc;
- 73.21.La;
- 78.55.Cr;
- Quantum dots;
- III-V semiconductors;
- Condensed Matter - Other
- E-Print:
- 4 pages, 5 figures, (v2, revision based on reviewers comments, published)