Description
Magnetically levitated superconductors provide a promising platform for detecting ultra-light dark matter through precision force measurements. In this talk, I will discuss our study of spin-2 dark matter—the dark graviton—and its effects on such systems via both matter and electromagnetic couplings. The former induces a tidal, strain-like force similar to a continuous gravitational wave, while the latter generates an effective current that produces an oscillating magnetic field. We model the system as a driven harmonic oscillator and derive the expected signals across the dHz–kHz frequency range. While the sensitivity to matter coupling is not competitive with existing bounds, the electromagnetic coupling offers a compelling opportunity. In particular, levitated superconductors could become leading probes of dark graviton interactions with photons at low frequencies, provided noise sources are well controlled.