Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked Quantum Dot Pairs

Details Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked Quantum Dot Pairs Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked Quantum Dot Pairs

2007-05-09

arxiv.org/abs/0705.1205v2

Phys. Rev. Lett. 99, 197402 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures, (v2, revision based on reviewers comments, published)

Scientific paper

10.1103/PhysRevLett.99.197402

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.

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