Photoluminescence spectroscopy of the molecular biexciton in vertically stacked InAs-GaAs quantum dot pairs |
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Authors: | Scheibner M Ponomarev I V Stinaff E A Doty M F Bracker A S Hellberg C S Reinecke T L Gammon D |
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Affiliation: | Naval Research Laboratory, Washington, DC 20375, USA. scheibner@bloch.nrl.navy.mil |
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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. |
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