Dark graviton sensing with magnetically levitated superconductors

by Valentina Danieli (CEICO, Prague)

Thursday Nov 5, 2026, 12:00 PM → 2:00 PM Europe/Madrid

C7b/058 - Seminar (IFAE Main Building C7b)

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. Our projections show that future detectors could surpass existing bounds on matter couplings in the audio band and explore previously unconstrained photon couplings at low frequencies. With significant experimental advances and careful control of technical and readout noise, magnetically levitated superconductors could therefore become leading laboratory probes of dark graviton interactions.