Titlebar

Bibliografische Daten exportieren
Literatur vom gleichen Autor
plus auf ERef Bayreuth
plus bei Google Scholar

 

Dynamic vibronic coupling in InGaAs quantum dots [Invited]

Titelangaben

Brash, A. J. ; Martins, L. M. P. ; Barth, Andreas M. ; Liu, Feng ; Quilter, J. H. ; Glässl, Martin ; Axt, Vollrath M. ; Ramsay, A. J. ; Skolnick, M. S. ; Fox, A. M.:
Dynamic vibronic coupling in InGaAs quantum dots [Invited].
In: Journal of the Optical Society of America B. Bd. 33 (2016) Heft 7 . - S. C115-C122.
ISSN 1520-8540
DOI: https://doi.org/10.1364/JOSAB.33.00C115

Angaben zu Projekten

Projektfinanzierung: Deutsche Forschungsgemeinschaft
Engineering and Physical Sciences Research Council (EPSRC) (EP/J007544/1)

Abstract

The electron--phonon coupling in self-assembled InGaAs quantum dots is relatively weak at low light intensities, which means that the zero-phonon line in emission is strong compared to the phonon sideband. However, the coupling to acoustic phonons can be dynamically enhanced in the presence of an intense optical pulse tuned within the phonon sideband. Recent experiments have shown that this dynamic vibronic coupling can enable population inversion to be achieved when pumping with a blueshifted laser and for rapid de-excitation of an inverted state with red detuning. In this paper we confirm the incoherent nature of the phonon-assisted pumping process and explore the temperature dependence of the mechanism. We also show that a combination of blueshifted and redshifted pulses can create and destroy an exciton within a timescale of ∼20 ps as determined by the pulse duration and ultimately limited by the phonon thermalization time.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: quantum dot; path-integrals; nonlinear optics; ultrafast dynamics; pure dephasing; phonons; decoherence; exciton inversion; non-Markovian dynamics; memory effects; phonon-induced memory; multi-phonon processes; exciton preparation; phonon-assisted off-resonant preparation; numerically complete real-time path integrals; quantum dissipative dynamics; exciton control; Spectroscopy; semiconductors; Ultrafast processes in condensed matter; including semiconductors
Institutionen der Universität: Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Theoretische Physik III > Lehrstuhl Theoretische Physik III - Univ.-Prof. Dr. Martin Axt
Fakultäten
Fakultäten > Fakultät für Mathematik, Physik und Informatik
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Theoretische Physik III
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Eingestellt am: 03 Nov 2017 10:57
Letzte Änderung: 03 Nov 2017 11:17
URI: https://eref.uni-bayreuth.de/id/eprint/40285