Near-field coupling of a levitated nanoparticle to a photonic crystal cavity

Journal Article (Journal Article)

Quantum control of levitated dielectric particles is an emerging subject in quantum optomechanics. A major challenge is to efficiently measure and manipulate the particle’s motion at the Heisenberg uncertainty limit. Here we present a nanophotonic interface suited to address this problem. By optically trapping a 150 nm silica particle and placing it in the near field of a photonic crystal cavity, we achieve tunable single-photon optomechanical coupling of up to g0∕2π 9kHz, three orders of magnitude larger than previously reported for levitated cavity optomechanical systems. Efficient collection and guiding of light through the nanophotonic structure results in a per-photon displacement sensitivity that is increased by two orders of magnitude compared to conventional far-field detection. The demonstrated performance shows a promising route for room temperature quantum optomechanics.

Full Text

Duke Authors

Cited Authors

  • Magrini, L; Norte, RA; Riedinger, R; Marinković, I; Grass, D; Delić, U; Gröblacher, S; Hong, S; Aspelmeyer, M

Published Date

  • December 20, 2018

Published In

Volume / Issue

  • 5 / 12

Start / End Page

  • 1597 - 1602

International Standard Serial Number (ISSN)

  • 2334-2536

Digital Object Identifier (DOI)

  • 10.1364/OPTICA.5.001597

Citation Source

  • Scopus