Work

Multimode radiation pressure actuation of a mechanical resonator using a spatial mode sorter

Year: 2026

Type: preprint

Abstract: Multimode optomechanical scattering is ubiquitous in free-space imaging protocols, but its radiation pressure counterpart is challenging to detect with extended objects. Here we demonstrate radiation pressure actuation of a nanomechanical membrane using dynamically structured light from a spatial mode demultiplexer (SPADE). Using single- and two-mode illumination, we directly image the position-dependent intermodal coupling between Hermite-Gauss (HG) modes as mediated by the membrane's motion. As an application, we use multimode radiation pressure feedback to simultaneously cool two nearly degenerate membrane modes. Our results are applicable to diverse mechanical systems and serve as a stepping stone to SPADE-based quantum optomechanics.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.38127

Authors: Choi, Morgan E., Allepuz-Requena, Daniel, Torres-Barajas, Diego, Sadafi, Neshat, Wilson, Dalziel J.

Institution: University of Arizona

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Gordon and Betty Moore Foundation, Multidisciplinary University Research Initiative, Office of Naval Research

Awards: G2443537725, NSF Engineering Research Center for Quantum Networks (CQN), G8343797021, CAREER: Torsional Quantum Optomechanics

OpenAlex ID: W7214935191

Cites: 3

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Related to: 10