Abstract
We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule. A non-perturbative quantum kinetic theory based on correlation expansion is used in order to describe both diagonal and off-diagonal electron-phonon couplings representing real and virtual processes with relevant acoustic phonons. We show that the relaxation is dominated by phonon-assisted electron tunneling between constituent quantum dots and occurs on a picosecond time scale. The dependence of the time evolution of the quantum dot occupation probabilities on the energy mismatch between the quantum dots is studied in detail.
| Original language | English |
|---|---|
| Journal | Physica Status Solidi. C: Current Topics in Solid State Physics |
| Volume | 8 |
| Issue number | 1 |
| Pages (from-to) | 1125-1128 |
| Number of pages | 3 |
| ISSN | 1862-6351 |
| DOIs | |
| Publication status | Published - Apr 2011 |