Electromagnetically induced transparency and slow light in two-mode optomechanics

TL;DR

This paper theoretically explores electromagnetically induced transparency and slow light phenomena in a two-mode optomechanical system, demonstrating controllable delay and amplification of probe signals via mechanical mediation and interference effects.

Contribution

It introduces a novel theoretical model of electromagnetically induced transparency in a two-mode cavity optomechanical system with mechanical coupling, highlighting controllable slow light and amplification effects.

Findings

A transparency window appears with a delay of up to 4 microseconds.

Probe beam delay can be controlled by pump power.

Amplification occurs when one cavity is driven on blue sideband and the other on red sideband.

Abstract

We theoretically demonstrate the mechanically mediated electromagnetically induced transparency in a two-mode cavity optomechanical system, where two cavity modes are coupled to a common mechanical resonator. When the two cavity modes are driven on their respective red sidebands by two pump beams, a transparency window appears in the probe transmission spectrum due to destructive interference. Under this situation the transmitted probe beam can be delayed as much as 4 us, which can be easily controlled by the power of the pump beams. In addition, we also investigate the amplification of the transmitted probe beam owing to constructive interference when one cavity is driven on its blue sideband while another one is driven on its red sideband.