The latest idea for finding dark matter? Using floating superconductors to sniff out 'dark gravitons.'
March 25, 2026
Original Paper
Dark graviton sensing with magnetically levitated superconductors
arXiv · 2603.22647
The Takeaway
By levitating a superconducting ball with magnets, scientists have designed an ultra-sensitive antenna that could react to the tiny gravitational pushes of hypothetical dark matter particles. This setup could become one of the most sensitive laboratory probes for the invisible stuff that makes up most of the universe's mass.
From the abstract
Levitated sensors have emerged as a new frontier to detect ultra-light dark matter such as axion-like particles and dark photons. In this work we study how a magnetically levitated superconductor responds to a spin-2 dark matter field, the dark graviton, in the dHz to kHz frequency range. To do so, we compute the forces that the dark graviton exerts on the superconductor, separately for matter and light couplings. The matter coupling produces a strain-like tidal acceleration between the supercon