Title data
Krügel, A. ; Axt, Vollrath Martin ; Kuhn, Tilmann ; Vagov, Alexei ; Peeters, F. M.:
Coherent nonlinear optical response of excitons and biexcitons in quantum dots coupled to phonons.
In: Physica Status Solidi B.
Vol. 243
(2006)
Issue 10
.
- pp. 2241-2246.
ISSN 1521-3951
DOI: https://doi.org/10.1002/pssb.200668034
Project information
Project financing: |
Deutsche Forschungsgemeinschaft The Flemish Science Foundation (FWO-Vl), the ESF network: Arrays of Quantum Dots and Josephson Junctions, and the EU-Network of Excellence: SANDiE |
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Abstract in another language
Four wave mixing signals from single dots and dot ensembles involving excitonic and biexcitonic transitions are discussed. The results have been obtained analytically from a four level dot model coupled to longitudinal acoustic phonons. Time integrated four wave mixing amplitudes for quantum dot ensembles exhibit polarization dependent quantum beats that have already been found in experimental data. In four wave mixing signals of single quantum dots we find that the ground state to exciton transition has two contributions. One is identical to the known solution of the two level quantum dot model and leads to symmetric spectra for longer delay times, while the other comprises phase information from the biexciton and results in asymmetric spectra.
Further data
Item Type: | Article in a journal |
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Refereed: | Yes |
Keywords: | quantum dot; generating functions; non-linear optics; ultrafast dynamics; pure dephasing; phonons; analytical solutions; phonon sidebands; excitons; four-wave mixing; polaron formation; Non-perturbative solution; decoherence; biexcitons; excitons; non-Markovian dynamics |
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 08:44 |
Last Modified: | 08 Mar 2022 12:59 |
URI: | https://eref.uni-bayreuth.de/id/eprint/40136 |