Theoretical physicists have found evidence for a novel quantum state called a "metallic superfluid" in numerical calculations. If observed in experiments the superfluid would be a new member of the family of "super" states that already includes superconductors, superfluid liquids and gases, and supersolids. The new state could be seen in hydrogen or its isotopes under high pressure (Phys. Rev. Lett. 95 135301).
"What we've done here is create a quantum memory,"