Regular Article

Control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system

Department of Physics, Quaid-i-Azam University 45320 Islamabad Pakistan

^a e-mail: kamran@phys.qau.edu.pk

Received: 9 July 2019
Received in final form: 13 September 2019
Published online: 24 December 2019

Abstract

We study the control of electromagnetically induced transparency and Fano resonances in a hybrid optomechanical system based on Bose-Einstein condensate trapped inside a high finesse Fabry Pérot cavity coupled with two charged nanomechanical resonators. The system is driven by a pump field and probed by a probe field. The nanomechanical resonators are connected to an external bias voltage V₁(−V₂) and generated electrostatic Coulomb coupling g_c. In this study, we show that the electromagnetically induced transparency can be controlled by the s-wave scattering frequency ω_sw as well as by the coupling frequencies of the system. Further, studying the effect of Bogoliubov mode, the transparency window splits from double to triple windows. At strong atom-atom interaction, we explain the asymmetric windows’ and explain their physical understanding.