We investigate the quantum linear and nonlinear effects in a novel five-level quantum
system placed near a plasmonic nanostructure. Such a quantum scheme contains a double …

This work proposes a double quantum dot (DQD) system, with a wetting layer (WL) is
included, to study the negative refractive index (NRI) under the application of the electric …

In this letter, we proposed a brand-new version for investigating the optical bistability (OB)
and optical multistability (OM) through electron tunneling impact in a defect one-dimensional …

We investigate the behavior of a linearly polarized pulse interacting with a multilevel rotary
chiral medium. Due to the strong chirality induced by electromagnetic fields together with the …

Tunable surface plasmons on the interface of a multilevel atomic medium with a cross
coupling of the electric and magnetic components of a plasmonic field are investigated. The …

We propose a scheme to investigate the spatial modulation of the refractive index in a dense
atomic ensemble under the action of the Laguerre–Gaussian (LG) beams. Theoretical …

In this paper, we have proposed a new model based on the electron tunneling effect for
controlling the optical bistability (OB) and optical multistability (OM) in a defect slab structure …

We investigate the electromagnetic chirality and negative refraction in a concentric
nanoshell of a chiral metal sphere and a chiral atomic shell. The medium of the atomic shell …

In this paper we demonstrate that for a five-level atomic system in a dense gas interacting
with two low-intensity fields by adjusting the ratio of the two magnetic amplitudes associated …

Manipulation of the refractive index has been of growing interest lately. We consider
parameters and possibilities of enhancing the absolute-value limit of the linear index in …