Probing quantum-mechanical level repulsion in disordered systems by means of time-resolved selectively-excited resonance fluorescence
Disordered Systems and Neural Networks
2007-05-23 v1
Abstract
We argue that the time-resolved spectrum of selectively-excited resonance fluorescence at low temperature provides a tool for probing the quantum-mechanical level repulsion in the Lifshits tail of the electronic density of states in a wide variety of disordered materials. The technique, based on detecting the fast growth of a fluorescence peak that is red-shifted relative to the excitation frequency, is demonstrated explicitly by simulations on linear Frenkel exciton chains.
Keywords
Cite
@article{arxiv.cond-mat/0701406,
title = {Probing quantum-mechanical level repulsion in disordered systems by means of time-resolved selectively-excited resonance fluorescence},
author = {A. V. Malyshev and V. A. Malyshev and J. Knoester},
journal= {arXiv preprint arXiv:cond-mat/0701406},
year = {2007}
}
Comments
4 pages, 4 figures, to appear in Phys. Rev. Lett