Simplified description of an active medium in quantum plasmonics
Other Condensed Matter
2018-05-30 v2
Abstract
In order to simplify the theoretical description of spasers, a gain medium is commonly represented by a two-level system. A realistic model, however, should have four levels. By using the Lindblad equations we develop a description of such a system and show that depending on ratios of the Rabi frequency and the rate of relaxation of the polarization, a four-level system may be reduced to one of two effective two-level systems that reproduce the key properties of a four-level system.
Cite
@article{arxiv.1612.01231,
title = {Simplified description of an active medium in quantum plasmonics},
author = {Evgeny D. Chubchev and Eugeny S. Andrianov and Alexey P. Vinogradov and Alexander A. Lisyansky},
journal= {arXiv preprint arXiv:1612.01231},
year = {2018}
}