Real-Time Kalman Filter: Cooling of an Optically Levitated Nanoparticle



Setter, Ashley, Toroš, Marko, Ralph, Jason F ORCID: 0000-0002-4946-9948 and Ulbricht, Hendrik
(2018) Real-Time Kalman Filter: Cooling of an Optically Levitated Nanoparticle. Physical Review A (Atomic, Molecular and Optical Physics), 97 (3).

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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 (FPGA), is sufficient to perform closed-loop parametric feedback cooling of the centre of mass motion to sub-Kelvin temperatures. The translational centre of mass motion along the optical axis of the trapped nanoparticle has been cooled by three orders of magnitude, from a temperature of 300K to a temperature of 162 +/- 15mK.

Item Type: Article
Additional Information: 8 pages, 3 figures
Uncontrolled Keywords: quant-ph, cond-mat.mes-hall, physics.app-ph, physics.optics
Depositing User: Symplectic Admin
Date Deposited: 14 Mar 2018 09:29
Last Modified: 01 Jan 2022 08:10
DOI: 10.1103/PhysRevA.97.033822
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3018971