Vagov, A. and Croitoru, M. D. and Axt, V. M. and Kuhn, T. and Peeters, F. M. (2007) Nonmonotonic field dependence of damping and reappearance of Rabi oscillations in quantum dots. Physical review letters, 98 (22). p. 227403. ISSN 1079-7114
Full text not available from this repository.Abstract
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.