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Nonmonotonic Field Dependence of Damping and Reappearance of Rabi Oscillations in Quantum Dots

Title data

Vagov, Alexei ; Croitoru, Mikhail D. ; Axt, Vollrath M. ; Kuhn, Tilmann ; Peeters, F. M.:
Nonmonotonic Field Dependence of Damping and Reappearance of Rabi Oscillations in Quantum Dots.
In: Physical Review Letters. Vol. 98 (2007) Issue 22 . - No. 227403, 4 Seiten.
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.98.227403

Project information

Project financing: Belgian Science Policy, ESF-AQDJJ network, EU Network of Excellence SANDiE and Marie-Curie excellence Grant No. NEXT-CT-2005-023778

Abstract in another language

The dynamics of strongly confined laser driven semiconductor quantum dots coupled to phonons is studied theoretically by calculating the time evolution of the reduced density matrix using a numerical path integral method. We explore the cases of long pulses, strong dot-phonon and dot-laser coupling, and high temperatures, which, up to now, have been inaccessible. We find that the phonon-induced damping of Rabi rotations is a nonmonotonic function of the laser field that is increasing at low fields and decreasing at high fields. This results in a reappearance of Rabi rotations at high fields. This phenomenon is of a general nature which occurs for all temperatures and carrier-phonon coupling strengths.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; path-integrals; non-linear optics; ultrafast dynamics; pure dephasing; phonons; decoherence; excitons; non-Markovian dynamics; memory effects; phonon-induced memory; multi-phonon processes; damping of Rabi oscillations
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: 25 Oct 2017 08:31
Last Modified: 25 Oct 2017 08:31
URI: https://eref.uni-bayreuth.de/id/eprint/40168