Phonon-Assisted Excitation Transfer in Quantum Dot Molecules
E. Rozbicki and P. Machnikowski
Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Received: 9 06 2007;
We derive a quantum-kinetic description of phonon-assisted Förster transfer between two coupled quantum dots (a quantum dot molecule). We show that the exciton state decays to the ground state of the quantum dot molecule via a combination of the Rabi rotation and exponential decay. For moderately spaced dots this process takes place on a picosecond timescale.
DOI: 10.12693/APhysPolA.112.197
PACS numbers: 63.20.Kr, 73.63.Kv