Effect of spontaneously generated coherence on left-handedness in a degeneracy atomic system
Abstract
A theoretical investigation is carried out into the effect of spontaneously generated coherence(SGC) on the left-handedness in a four-level Y-type atomic system with two highest nearly degenerate lying levels. It is found, with the spontaneously generated coherence intensity enhancing, the atomic system gradually displays left-handedness with simultaneous negative permittivity and permeability. And the refractive index enhances with the increasing intensity of SGC.However, the absorption is suppressed by the SGC effect when the SGC has a large intensity.When the probe field is near-resonant coupled to the atomic system, the appearance of SGC doesn't always change the permeability from positive to negative and allow for left-handed behavior,unless the SGC reaches a large intensity.
Keywords
Cite
@article{arxiv.2403.00848,
title = {Effect of spontaneously generated coherence on left-handedness in a degeneracy atomic system},
author = {Shun-Cai Zhao},
journal= {arXiv preprint arXiv:2403.00848},
year = {2024}
}
Comments
9 pages, 6 figures