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Phonon Effects on Population Inversion in Quantum Dots : Resonant, Detuned and Frequency-Swept Excitations

Title data

Reiter, Doris ; Lüker, Sebastian ; Gawarecki, Krzysztof ; Grodecka-Grad, Anna ; Machnikowski, Paweł ; Axt, Vollrath M. ; Kuhn, Tilmann:
Phonon Effects on Population Inversion in Quantum Dots : Resonant, Detuned and Frequency-Swept Excitations.
In: Acta Physica Polonica A. Vol. 122 (2012) Issue 6 . - pp. 1065-1068.
ISSN 1898-794X
DOI: https://doi.org/10.12693/APhysPolA.122.1065

Project information

Project financing: Alexander von Humboldt-Stiftung
Supported by the TEAM programme of the Foundation for Polish Science co-financed from the European Regional Development Fund.

Abstract in another language

The effect of acoustic phonons on different light-induced excitations of a semiconductor quantum dot is investigated. Resonant excitation of the quantum dot leads to the Rabi oscillations, which are damped due to the phonon interaction. When the excitation frequency is detuned, an occupation can only occur due to phonon absorption or emission processes. For frequency-swept excitations a population inversion is achieved through adiabatic rapid passage, but the inversion is also damped by phonons. For all three scenarios the influence of the phonons depends non-monotonically on the pulse area.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; nonlinear optics; ultrafast dynamics; phonons; excitons; phonon assisted inversion; damping of Rabi oscillations; frequency-swept excitation; adiabatic rapid passage
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: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 30 Oct 2017 15:05
Last Modified: 02 Nov 2017 10:33
URI: https://eref.uni-bayreuth.de/id/eprint/40234