https://doi.org/10.1140/epjd/e2003-00020-2
Coherent and incoherent phonon processes in artificial atoms
1
Institute of Physics, Wrocław University of
Technology, Wybrzeże Wyspiańskiego 27, 50–370 Wrocław, Poland
2
Institute of Mathematics, University of Opole, Oleska 48, 45–051
Opole, Poland
3
Institut für Theoretische Physik, Universität Innsbruck,
Technikerstrasse 25, 6020 Innsbruck, Austria
Corresponding author: a machnik@if.pwr.wroc.pl
Received:
30
August
2002
Revised:
25
November
2002
Published online:
28
January
2003
Carrier–phonon interaction in semiconductor quantum dots leads to three classes of phenomena: coherent effects (spectrum reconstruction) due to the nearly-dispersionless LO phonons, incoherent effects (transitions) induced by acoustical phonons and dressing phenomena, related to non-adiabatic, sub-picosecond excitation. Polaron spectra, relaxation times and dressing-related decoherence rates are calculated, in accordance with experiment.
PACS: 68.65.Hb – Quantum dots / 63.20.Kr – Phonon-electron and phonon-phonon interactions / 03.65.Yz – Decoherence; open systems; quantum statistical methods
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
