Reducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
We study the phonon-induced dephasing of the exciton state in a quantum dot excited by a sequence of ultra-short pulses. We show that the multiple-pulse control leads to a considerable improvement of the coherence of the optically excited state. For a fixed control time window, the optimized pulsed control often leads to a higher degree of coherence than the control by a smooth single Gaussian pulse. The reduction of dephasing is considerable already for 2-3 pulses.
Cite
@article{arxiv.cond-mat/0408322,
title = {Reducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control},
author = {V. M. Axt and P. Machnikowski and T. Kuhn},
journal= {arXiv preprint arXiv:cond-mat/0408322},
year = {2007}
}
Comments
Final version (moderate changes)