Nanophotonic cavity optomechanics with propagating phonons in microwave Ku band

TL;DR

This paper demonstrates sideband-resolved coupling between photonic nanocavities and propagating mechanical waves in the microwave Ku-band, enabling coherent photon-phonon interactions for microwave and quantum photonics applications.

Contribution

It introduces a scalable nanophotonic platform that achieves strong, coherent optomechanical coupling with propagating phonons in the microwave Ku-band.

Findings

Demonstrated optomechanically induced transparency and absorption.

Achieved phase-coherent interactions across multiple cavities.

Showed phonon pulses can interact multiple times within an echo chamber.

Abstract

Sideband-resolved coupling between multiple photonic nanocavities and propagating mechanical waves in microwave Ku-band is demonstrated. Coherent and strong photon-phonon interaction is manifested with optomechanically induced transparency and absorption, and phase-coherent interaction in multiple cavities. Inside an echo chamber it is shown that a phonon pulse can interact with an embedded nanocavity for multiple times. Our device provides a scalable platform to optomechanically couple phonons and photons for microwave photonics and quantum photonics.