The Electromagnetically Induced Transparency in Mechanical Effects of Light

TL;DR

This paper demonstrates electromagnetically induced transparency (EIT)-like effects in a nanomechanical mirror system, revealing how light-matter interactions can produce transparency and dispersion changes similar to atomic systems.

Contribution

It introduces the concept of EIT in a mechanical opto-mechanical system, showing the origin of transparency dips and dispersion changes analogous to atomic Lambda systems.

Findings

EIT-like transparency observed in the output field.

Dispersion shifts from anomalous to normal at EIT dips.

Opto-mechanical response mimics atomic Lambda systems.

Abstract

We consider the dynamical behavior of a nanomechanical mirror in a high-quality cavity under the action of a coupling laser and a probe laser. We demonstrate the existence of the analog of electromagnetically induced transparency (EIT) in the output field at the probe frequency. Our calculations show explicitly the origin of EIT-like dips as well as the characteristic changes in dispersion from anomalous to normal in the range where EIT dips occur. Remarkably the pump-probe response for the opto mechanical system shares all the features of the Lambda system as discovered by Harris and collaborators.