Rashid, M;
Toros, M;
Setter, A;
Ulbricht, H;
(2018)
Precession Motion in Levitated Optomechanics.
Physical Review Letters
, 121
(25)
, Article 253601. 10.1103/PhysRevLett.121.253601.
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Abstract
We investigate experimentally the dynamics of a nonspherical levitated nanoparticle in a 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 N m at 1 × 10−1 mbar, with an estimated torque sensitivity of 3.6 � 1.1 × 10−31 N m= Hz p at 1 × 10−7 mbar
| Type: | Article |
|---|---|
| Title: | Precession Motion in Levitated Optomechanics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.121.253601 |
| Publisher version: | http://doi.org/10.1103/PhysRevLett.121.253601 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10066195 |
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