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

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

2001-08-28

arxiv.org/abs/cond-mat/0108466v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

one typo fixed

Scientific paper

10.1103/PhysRevB.65.073310

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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