Imaging-based feedback cooling of a levitated nanoparticle
Year: 2022
Authors: Minowa Y., Kato K., Ueno S., Penny T.W., Pontin A., Ashida M., Barker P.F.
Autors Affiliation: Osaka Univ, Grad Sch Engn Sci, 1-3 Machikaneyama Cho, Toyonaka, Osaka 5608531, Japan; UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England.
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.
Journal/Review: REVIEW OF SCIENTIFIC INSTRUMENTS
Volume: 93 (7) Pages from: 75109-1 to: 75109-5
More Information: Y.M. acknowledges funding from the JSPS KAKENHI under Grant No. JP18KK0387 and JST PRESTO under Grant No. JPMJPR1909. P.F.B. acknowledges support from the UK’s EPSRC under Grant Nos. EP/N031105/1 and EP/S000267/1 and the H2020-EU.1.2.1 TEQ Project under Grant Agreement ID 766900.KeyWords: Cameras; CMOS integrated circuits; Cooling; Feedback; Metal nanoparticles; MOS devices; Oscillistors; Oxide semiconductorsDOI: 10.1063/5.0095614ImpactFactor: 1.600Citations: 1data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-24References taken from IsiWeb of Knowledge: (subscribers only)
