Optical Interferometric Readout of a Magnetically Levitated Superconducting Microsphere
J. J. Hansen, S. Minniberger, D. Ilk, P. Asenbaum, G. Higgins, R. G. Povey, P. Schmidt, J. Hofer, R. Claessen, M. Aspelmeyer, M. Trupke
https://arxiv.org/abs/2508.11731