Multiple electromagnetically induced transparency, slow and fast light in hybrid optomechanics

TL;DR

This paper theoretically explores multiple electromagnetically induced transparency windows in a hybrid optomechanical system with a three-level atom, revealing tunable slow and fast light effects with potential applications in quantum and classical communication.

Contribution

It introduces the concept of multiple EIT windows in a hybrid system with tunable parameters, advancing control over light propagation for various technological applications.

Findings

Three distinct EIT windows observed in the probe absorption spectrum.

Tunable switching between multiple, double, and single EIT windows.

Demonstration of slow and fast light regimes with enhanced superluminal effects.

Abstract

We theoretically investigate the phenomenon of electromagnetically induced transparency (EIT) of a weak probe field in hybrid optomechanics with a single three-level ($\Lambda$-type) atomic system. We report that, in the presence of optomechanical coupling and two transition coupling parameters of three-level atom (TLA), there occurs three distinct multiple EIT windows in the probe absorption spectrum. Moreover, the switching of multiple windows into double and single EIT windows can be obtained by suitably tuning the system parameters. Furthermore, the probe transmission spectrum have been studied. Based on our analytical and numerical work, we explain the occurrence of slow and fast light (superluminal) regimes, and enhancement of superluminal behaviour in the probe field transmission. This work demonstrates great potential in multi-channel waveguide, fiber optics and classical communication networks, multi-channel quantum information processing, real quality imaging, cloaking devices and delay lines & optical buffers for telecommunication.