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

• Authors: D. Reiter , S. Lüker , K. Gawarecki , A. Grodecka-Grad , P. Machnikowski , V. Axt , T. Kuhn
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

78.67.Hc; 78.47.D-; 42.50.Md

Discipline

• 78.67.Hc: Quantum dots
• 42.50.Md: Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency
• 78.47.D-: Time resolved spectroscopy (>1 psec)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 6
• Pages: 1065-1068

Dates

published

2012-12

Contributors

author

D. Reiter

• Institut für Festkörpertheorie, Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

author

S. Lüker

• Institut für Festkörpertheorie, Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

author

K. Gawarecki

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

A. Grodecka-Grad

• QUANTOP, Danish National Research Foundation Center for Quantum Optics, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark

author

P. Machnikowski

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

V. Axt

• Theoretische Physik III, Universität Bayreuth, 95440 Bayreuth, Germany

author

T. Kuhn

• Institut für Festkörpertheorie, Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

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Identifiers

DOI

10.12693/APhysPolA.122.1065