Minowa, Y;
Kato, K;
Ueno, S;
Penny, TW;
Pontin, A;
Ashida, M;
Barker, PF;
(2022)
Imaging-based feedback cooling of a levitated nanoparticle.
Review of Scientific Instruments
, 93
(7)
, Article 075109. 10.1063/5.0095614.
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Abstract
Imaging-based detection of the motion of levitated nanoparticles complements a widely used interferometric detection method, providing a precise and robust way to estimate the position of the particle. Here, we demonstrate a camera-based feedback cooling scheme for a charged nanoparticle levitated in a linear Paul trap. The nanoparticle levitated in vacuum was imaged using a complementary metal-oxide semiconductor (CMOS) camera system. The images were processed in real-time with a microcontroller integrated with a CMOS image sensor. The phase-delayed position signal was fed back to one of the trap electrodes, resulting in cooling by velocity damping. Our study provides a simple and versatile approach applicable for the control of low-frequency mechanical oscillators.
| Type: | Article |
|---|---|
| Title: | Imaging-based feedback cooling of a levitated nanoparticle |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0095614 |
| Publisher version: | https://doi.org/10.1063/5.0095614 |
| 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 > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10152246 |
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