Phonon routing in integrated optomechanical cavity-waveguide systems
Abstract
The mechanical properties of light have found widespread use in the manipulation of gas-phase atoms and ions, helping create new states of matter and realize complex quantum interactions. The field of cavity-optomechanics strives to scale this interaction to much larger, even human-sized mechanical objects. Going beyond the canonical Fabry-Perot cavity with a movable mirror, here we explore a new paradigm in which multiple cavity-optomechanical elements are wired together to form optomechanical circuits. Using a pair of optomechanical cavities coupled together via a phonon waveguide we demonstrate a tunable delay and filter for microwave-over-optical signal processing. In addition, we realize a tight-binding form of mechanical coupling between distant optomechanical cavities, leading to direct phonon exchange without dissipation in the waveguide. These measurements indicate the feasibility of phonon-routing based information processing in optomechanical crystal circuitry, and further, to the possibility of realizing topological phases of photons and phonons in optomechanical cavity lattices.
Cite
@article{arxiv.1508.05138,
title = {Phonon routing in integrated optomechanical cavity-waveguide systems},
author = {Kejie Fang and Matthew H. Matheny and Xingsheng Luan and Oskar Painter},
journal= {arXiv preprint arXiv:1508.05138},
year = {2015}
}
Comments
16 pages, 7 figures