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Back action of nonequilibrium phonons on the optically induced dynamics in semiconductor quantum dots

Title data

Krügel, A. ; Axt, Vollrath M. ; Kuhn, Tilmann:
Back action of nonequilibrium phonons on the optically induced dynamics in semiconductor quantum dots.
In: Physical Review B. Vol. 73 (2006) Issue 3 . - No. 035302, 9 Seiten.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.73.035302

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The dynamics in a GaAs-type quantum dot induced by excitation with Gaussian laser pulses of arbitrary duration are calculated in the density matrix formalism using the correlation expansion. In particular the back-action of nonequilibrium phonons, i.e., the coherent phonon amplitude and the nonequilibrium phonon occupation, on the electronic two-level system are studied. We find that especially for long pulses and low temperatures nonequilibrium phonons play an important role and cannot be neglected.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; correlation expansion; non-linear optics; ultrafast dynamics; pure dephasing; phonons; excitons; Non-perturbative solution; dampind of Rabi oscillation; decoherence; non-Markovian dynamics; memory effects; nonequilibrium phonons; coherent phonons
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 24 Oct 2017 09:14
Last Modified: 24 Oct 2017 09:14
URI: https://eref.uni-bayreuth.de/id/eprint/40146