Imaging based feedback cooling of a levitated nanoparticle
- URL: http://arxiv.org/abs/2204.05506v2
- Date: Tue, 6 Dec 2022 03:38:46 GMT
- Title: Imaging based feedback cooling of a levitated nanoparticle
- Authors: Yosuke Minowa, Keisuke Kato, Shoki Ueno, Thomas W. Penny, Antonio
Pontin, Masaaki Ashida, Peter F. Barker
- Abstract summary: Imaging-based detection of the motion of the levitated nanoparticles complements a widely-used interferometric detection method.
Here, we show the camera-based feedback cooling of a charged nanoparticles levitated in a linear Paul trap.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Imaging-based detection of the motion of the levitated nanoparticles
complements a widely-used interferometric detection method, providing a precise
and robust way to estimate the position of the particle. Here, we show the
camera-based feedback cooling of a charged nanoparticle levitated in a linear
Paul trap. A charged nanoparticle levitated in a vacuum was observed by CMOS
camera systems. The nanoparticle images were processed in realtime 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 the velocity
damping cooling. Our study provides a simple and versatile approach applicable
for control of low-frequency mechanical oscillators.
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