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arXiv · 2007.04434

Optical and electrical feedback cooling of a silica nanoparticle levitated in a Paul trap

Lorenzo Dania·Dmitry S. Bykov·Matthias Knoll·Pau Mestres·Tracy E. Northup
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Abstract

All three motional modes of a charged dielectric nanoparticle in a Paul trap are cooled by direct feedback to temperatures of a few mK. We test two methods, one based on electrical forces and the other on optical forces; for both methods, we find similar cooling efficiencies. Cooling is characterized for both feedback forces as a function of feedback parameters, background pressure, and the particle's position.

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Lorenzo Dania, Dmitry S. Bykov, Matthias Knoll, Pau Mestres, Tracy E. Northup. 2020-07-05. Optical and electrical feedback cooling of a silica nanoparticle levitated in a Paul trap. https://doi.org/10.1103/physrevresearch.3.013018

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