Adjusting the left-handedness in a cold $^{87}$Rb atom via multiple parameter modulation

TL;DR

This paper demonstrates how to control the left-handedness in cold 7rb atom systems by adjusting parameters like density, coupling strength, and incoherent pumping, enabling flexible experimental setups.

Contribution

It introduces a method to tune left-handedness in cold 7rb atoms through multiple parameter modulation, enhancing experimental feasibility.

Findings

Higher atom density and stronger coupling enhance left-handedness.

Incoherent pumping fields induce negative magnetic response.

Parameter adjustments provide flexible control over the system.

Abstract

We demonstrate the adjusting left-handedness in the cold \(^{87}\)Rb atom by its number density, the strong coupling field and two incoherent pumping fields. The results show that more dense \(^{87}\)Rb atoms and more stronger coupling field can influence the left-handedness more greatly, while the increasing two incoherent pumping fields construct the negative magnetic response but depress the negative electric response. The left-handedness adjusted by multiple parameter in the cold \(^{87}\)Rb atomic system provides the flexibility and feasibility for the coming experiment.