Penny, TW;
Pontin, A;
Barker, PF;
(2021)
Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison.
Physical Review A
, 104
(2)
, Article 023502. 10.1103/PhysRevA.104.023502.
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Abstract
Cooling the center-of-mass motion is an important tool for levitated optomechanical systems, but it is often not clear which method can practically reach lower temperatures for a particular experiment. We directly compare the parametric and velocity feedback damping methods, which are used extensively for cooling the motion of single trapped particles in a range of traps. By performing experiments on the same particle, and with the same detection system, we demonstrate that velocity damping cools the oscillator to a temperature an order of magnitude lower and is more resilient to imperfect experimental conditions. We show that these results are consistent with analytical limits as well as numerical simulations that include experimental noise.
| Type: | Article |
|---|---|
| Title: | Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.104.023502 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.104.023502 |
| 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 > Provost and Vice Provost Offices > UCL BEAMS 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133195 |
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