Imaging based feedback cooling of a levitated nanoparticle
| Autor: | Y. Minowa, K. Kato, S. Ueno, T. W. Penny, A. Pontin, M. Ashida, P. F. Barker |
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| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.48550/arxiv.2204.05506 |
| Popis: | 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. Comment: code available: https://github.com/minowayosuke/high_fps_camera_feedback |
| Databáze: | OpenAIRE |
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