Nonreciprocal transport based on cavity Floquet modes in optomechanics
Abstract
Directional transport is obtained in various multimode systems by driving multiple, nonreciprocally-interfering interactions between individual bosonic modes. However, systems sustaining the required number of modes become physically complex. In our microwave-optomechanical experiment, we show how to configure nonreciprocal transport between frequency components of a single superconducting cavity coupled to two drumhead oscillators. The frequency components are promoted to Floquet modes and generate the missing dimension to realize an isolator and a directional amplifier. A second cavity left free by this arrangement is used to cool the mechanical oscillators and bring the transduction noise close to the quantum limit. We furthermore uncover a new type of instability specific to nonreciprocal coupling. Our approach is generic and can greatly simplify quantum signal processing and the design of topological lattices from low-dimensional systems.
Keywords
Cite
@article{arxiv.1912.10541,
title = {Nonreciprocal transport based on cavity Floquet modes in optomechanics},
author = {Laure Mercier de Lépinay and Caspar F. Ockeloen-Korppi and Daniel Malz and Mika A. Sillanpää},
journal= {arXiv preprint arXiv:1912.10541},
year = {2020}
}
Comments
7 pages, 4 figures