Linear cooling of a levitated micromagnetic cylinder by vibration
Year: 2024
Type: article
Abstract: We report feedback cooling of translational and librational degrees of freedom of a levitated m icromagnet cylinder, utilizing a piezoelectric actuator to apply linear feedback to high-Q mechanical modes. The normal modes are measured with a superconducting pick-up coil coupled to a dc SQUID, and phase information is fed back to the piezoelectric actuator to feedback cool a center-of-mass mode to ∼ 7 K , and a librational mode to 830 ± 200 mK . Q-factors of 1.0 × 10 7 are evaluated for the center-of-mass mode. We find that it is plausible to achieve ground state cooling of the center-of-mass mode by introducing vibration isolation, optimizing the geometry of the pick-up coil to focus on the specific mode of interest and utilizing a state-of-the-art SQUID for detection. Published by the American Physical Society 2024
Source: Physical Review Research
Institution: University of Southampton
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Awards: G2522740477, Nonclassicality of the Harmonic-Oscillator Coherent State Persisting up to the Macroscopic Domain (NoHarmMacro), G3114824966, G4494116143, Integrated levitated optomechanical gravimeter, Amplification of electromagnetic waves by a rotating body, EPSRC Core Equipment at Southampton 2020
OpenAlex ID: W4402983689