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Creators/Authors contains: "Uitenbroek, Dennis G"

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  1. ; ; ; (, Physical Review Letters)
    We perform the first search for ultralight dark matter using a magnetically levitated particle. A submillimeter permanent magnet is levitated in a superconducting trap with a measured force sensitivity of 0.2     fN / Hz . We find no evidence of a signal and derive limits on dark matter coupled to the difference between baryon and lepton number, B − L , in the mass range ( 1.10360 − 1.10485 ) × 10 − 13     eV / c 2 . Our most stringent limit on the coupling strength is g B − L ≲ 2.98 × 10 − 21 . We propose the POLONAISE (Probing Oscillations using Levitated Objects for Novel Accelerometry In Searches of Exotic physics) experiment, which features short-, medium-, and long-term upgrades that will give us leading sensitivity in a wide mass range, demonstrating the promise of this novel quantum sensing technology in the hunt for dark matter. Published by the American Physical Society2025 
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    Free, publicly-accessible full text available June 1, 2026