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Time-resolved spectroscopy of multi-excitonic decay in an InAs quantum dot

Charles Santori·Glenn S. Solomon·Matthew Pelton·Yoshihisa Yamamoto
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Abstract

The multi-excitonic decay process in a single InAs quantum dot is studied through high-resolution time-resolved spectroscopy. A cascaded emission sequence involving three spectral lines is seen that is described well over a wide range of pump powers by a simple model. The measured biexcitonic decay rate is about 1.5 times the single-exciton decay rate. This ratio suggests the presence of selection rules, as well as a significant effect of the Coulomb interaction on the biexcitonic wavefunction.

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Charles Santori, Glenn S. Solomon, Matthew Pelton, Yoshihisa Yamamoto. 2001-11-22. Time-resolved spectroscopy of multi-excitonic decay in an InAs quantum dot. https://doi.org/10.1103/physrevb.65.073310

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