Real-time Kalman filter: cooling of an optically levitated nanoparticle

Setter, A., Toroš, M. , Ralph, J. F. and Ulbricht, H. (2018) Real-time Kalman filter: cooling of an optically levitated nanoparticle. Physical Review A: Atomic, Molecular and Optical Physics, 97(3), 033822. (doi: 10.1103/PhysRevA.97.033822)

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Abstract

We demonstrate that a Kalman filter applied to estimate the position of an optically levitated nanoparticle, and operated in real-time within a field programmable gate array, is sufficient to perform closed-loop parametric feedback cooling of the center-of-mass motion to sub-Kelvin temperatures. The translational center-of-mass motion along the optical axis of the trapped nanoparticle has been cooled by 3 orders of magnitude, from a temperature of 300 K to a temperature of 162 ± 15 mK.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Toros, Dr Marko
Authors: Setter, A., Toroš, M., Ralph, J. F., and Ulbricht, H.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review A: Atomic, Molecular and Optical Physics
Publisher:American Physical Society
ISSN:1050-2947
ISSN (Online):1094-1622
Published Online:15 March 2018
Data DOI:10.5258/SOTON/D0355

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