Year: 2026
Type: preprint
Abstract: Magnetically trapped type-I superconductors are promising candidates for precision experiments at the quantum-to-classical borderline, with applications in quantum sensing of forces and accelerations and fundamental tests of quantum physics. Here, we show how the rotational motion of micron-sized superconductors is strongly affected by (i) the diamagnetic torques due to the gradient of the trapping field and by (ii) the gyromagnetic coupling due to Einstein-de Haas and Barnett effects. We show that this allows the three-dimensional alignment of asperhical superconductors in the trap center, as required for future sensing applications and quantum experiments, and determine the resulting librational trapping frequencies. Finally, we propose an experiment to probe gyromagnetic coupling in levitated superconductors and we discuss how it can be used to control the particle rotation.
Source: arXiv (Cornell University)
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G3992659, G5602316953, Exploring nonclassical states of center-of-mass mechanical motion with superconducting magneto- and levitomechanics, G7778125224, G7799207878, Entanglement of an array of massive, magnetically levitated superconducting microparticles on a chip, G8204089044, Kontrolle makromechanischer Quantensysteme
OpenAlex ID: W7203719943
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