Electromagnetically induced transparency and tunable fano resonances in hybrid optomechanics

TL;DR

This paper investigates electromagnetically induced transparency and tunable Fano resonances in a hybrid optomechanical system comprising a two-level atom and a moving mirror, revealing controllable optical phenomena with experimental feasibility.

Contribution

It demonstrates the conditions for single and double EIT windows and shows how to tune Fano resonances in a hybrid atom-optomechanical system, combining analytic and numerical analysis.

Findings

Single EIT window with optomechanical or Jaynes-Cummings coupling.

Double EIT windows when both couplings are present.

Tunable Fano resonances controllable via system parameters.

Abstract

We explain the phenomena of electromagnetically induced transparency (EIT) of a weak probe field and tunable Fano resonances in hybrid optomechanics. The system of study consists of a two-level atom coupled to a single-mode field of an optomechanical resonator with a moving mirror. We show that a single EIT window exists in the presence of optomechanical coupling or Jaynes-Cummings coupling, whereas two distinct double EIT windows occur when both the couplings are simultaneously present. Furthermore, based on our analytic and numerical work, we prove the existence of tunable fano resonances in the system. The controlling parameters of the system, which switch from a single EIT window to double EIT windows and are needed to tune the fano resonances, can be realized in present-day laboratory experiments.