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Precession motion in levitated optomechanics

Precession motion in levitated optomechanics
Precession motion in levitated optomechanics
We investigate experimentally the dynamics of a non-spherical levitated nanoparticle in vacuum. In addition to translation and rotation motion, we observe the light torque-induced precession and nutation of the trapped particle. We provide a theoretical model, which we numerically simulate and from which we derive approximate expressions for the motional frequencies. Both, the simulation and approximate expressions, we find in good agreement with experiments. We measure a torque of 1.9±0.5×10−23 Nm at 1×10−1 mbar, with an estimated torque sensitivity of 3.6±1.1×10−31 Nm/√Hz at 1×10−7 mbar.
1079-7114
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
Toros, Marko
bd02c9f1-e498-474e-a98d-5b9882874915
Rashid, Muddassar
2d80257f-bf01-4710-8752-6b50165b747b
Setter, Ashley, James
00a0c476-7b25-41a7-9cda-b55d14cccf05
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
Toros, Marko
bd02c9f1-e498-474e-a98d-5b9882874915
Rashid, Muddassar
2d80257f-bf01-4710-8752-6b50165b747b
Setter, Ashley, James
00a0c476-7b25-41a7-9cda-b55d14cccf05

Ulbricht, Hendrik, Toros, Marko, Rashid, Muddassar and Setter, Ashley, James (2018) Precession motion in levitated optomechanics. Physical Review Letters, 121 (25). (doi:10.1103/PhysRevLett.121.253601).

Record type: Article

Abstract

We investigate experimentally the dynamics of a non-spherical levitated nanoparticle in vacuum. In addition to translation and rotation motion, we observe the light torque-induced precession and nutation of the trapped particle. We provide a theoretical model, which we numerically simulate and from which we derive approximate expressions for the motional frequencies. Both, the simulation and approximate expressions, we find in good agreement with experiments. We measure a torque of 1.9±0.5×10−23 Nm at 1×10−1 mbar, with an estimated torque sensitivity of 3.6±1.1×10−31 Nm/√Hz at 1×10−7 mbar.

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Precession Motion in Levitated Optomechanics - Accepted Manuscript
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More information

Accepted/In Press date: 12 November 2018
e-pub ahead of print date: 17 December 2018
Published date: 21 December 2018

Identifiers

Local EPrints ID: 426541
URI: https://eprints.soton.ac.uk/id/eprint/426541
ISSN: 1079-7114
PURE UUID: 90bd57ca-0f91-4f55-b450-b5de1afeadd6
ORCID for Ashley, James Setter: ORCID iD orcid.org/0000-0003-3723-3468

Catalogue record

Date deposited: 30 Nov 2018 17:30
Last modified: 14 Mar 2019 05:01

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