Nanomechanical Inverse Electromagnetically Induced Transparency and Confinement of Light in Normal modes

TL;DR

This paper reports the observation of inverse electromagnetically induced transparency in an optomechanical system, where light is fully absorbed and confined within the cavity, with energy shared between optical and mechanical modes.

Contribution

It introduces the phenomenon of inverse electromagnetically induced transparency in a nanomechanical optomechanical system, demonstrating complete probe field absorption and light confinement in normal modes.

Findings

Complete absorption of probe fields in the system.

Light confinement inside the cavity with energy shared between photons and phonons.

Energy extraction possible via external perturbations or cavity Q-factor changes.

Abstract

We demonstrate the existence of the phenomenon of the inverse electromagnetically induced transparency (IEIT) in an opto mechanical system consisting of a nanomechanical mirror placed in an optical cavity. We show that two weak counter-propagating identical classical probe fields can be completely absorbed by the system in the presence of a strong coupling field so that the output probe fields are zero. The light is completely confined inside the cavity and the energy of the incoming probe fields is shared between the cavity field and creation of a coherent phonon and resides primarily in one of the polariton modes. The energy can be extracted by a perturbation of the external fields or by suddenly changing the $Q$ of the cavity.