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

Journal article (2018)

Authors

Lorenzo Magrini University of Vienna
R.A. Norte Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering , Kavli institute of nanoscience Delft, QN/Groeblacher Lab - AS
R.F. Riedinger University of Vienna
I. Marinkovic QN/Groeblacher Lab - AS , Kavli institute of nanoscience Delft
David Grass University of Vienna
Uroš Delić University of Vienna
S. Groeblacher QN/Groeblacher Lab - AS , Kavli institute of nanoscience Delft
Sungkun Hong University of Vienna
Markus Aspelmeyer University of Vienna
Research Group
QN/Groeblacher Lab (AS) (TU Delft)
Copyright: © 2018 Lorenzo Magrini, R.A. Norte, R.F. Riedinger, I. Marinkovic, David Grass, Uroš Delić, S. Groeblacher, Sungkun Hong, Markus Aspelmeyer
DOI: https://doi.org/10.1364/OPTICA.5.001597
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Published Date

2018

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Groeblacher Lab

Abstract

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.