Left handness in a four-level atomic system
Quantum Physics
2026-05-04 v1
Abstract
A scheme is proposed for realizing simultaneous negative permittivity and negative permeability based on quantum coherence in a four-level dense atomic system here.Under some parametric conditions the system shows that simultaneous negative permittivity and negative permeability(i.e.Left handness) can be achieved in a wider frequency band because of quantum coherence.And the novelty properties of gain and dispersion near the resonance frequency may have some potential applications.
Cite
@article{arxiv.2605.00077,
title = {Left handness in a four-level atomic system},
author = {Shuncai Zhao and Zhengdong Liu},
journal= {arXiv preprint arXiv:2605.00077},
year = {2026}
}
Comments
4 pages, 5 figures