Observation of gyroscopic coupling in a non-spinning levitated ferromagnet

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Bibliographische Detailangaben
Hauptverfasser:	Ahrens, F., Vinante, A.
Format:	Preprint
Veröffentlicht:	2025
Schlagworte:	Quantum Physics
Online-Zugang:	Acceder al recurso
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author	Ahrens, F. Vinante, A.
author_facet	Ahrens, F. Vinante, A.
contents	A non-spinning permanent ferromagnet is predicted to behave as a gyroscope at sufficiently low frequencies, which can be seen as a manifestation of the Einstein-de Haas effect. This yet unexplored regime has been recently proposed for ultrasensitive precession-based magnetometry and for atomic-like quantum stabilization of a levitated nanomagnet in a static field. Here, we observe signatures of gyroscopic effects in the rotational dynamics of a non-spinning permanent ferromagnet levitated in a superconducting trap. Specifically, we detect spin-rotation coupling between different librational modes, in good agreement with theoretical predictions. From our measurements, we can infer both the intrinsic angular momentum of the levitated magnet and its gyromagnetic $g$-factor.
format	Preprint
id	arxiv_https___arxiv_org_abs_2504_13744
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Observation of gyroscopic coupling in a non-spinning levitated ferromagnet Ahrens, F. Vinante, A. Quantum Physics A non-spinning permanent ferromagnet is predicted to behave as a gyroscope at sufficiently low frequencies, which can be seen as a manifestation of the Einstein-de Haas effect. This yet unexplored regime has been recently proposed for ultrasensitive precession-based magnetometry and for atomic-like quantum stabilization of a levitated nanomagnet in a static field. Here, we observe signatures of gyroscopic effects in the rotational dynamics of a non-spinning permanent ferromagnet levitated in a superconducting trap. Specifically, we detect spin-rotation coupling between different librational modes, in good agreement with theoretical predictions. From our measurements, we can infer both the intrinsic angular momentum of the levitated magnet and its gyromagnetic $g$-factor.
title	Observation of gyroscopic coupling in a non-spinning levitated ferromagnet
topic	Quantum Physics
url	https://arxiv.org/abs/2504.13744

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