Inside the chamber of the Quantinuum H2 quantum processor. Credit: Quantinuum Our physical, 3D world consists of just two types of particles: bosons, which include light and the famous Higgs boson; and fermions—the protons, neutrons, and electrons that comprise all the "stuff," present company included. Theoretical physicists like Ashvin Vishwanath, Harvard's George Vasmer Leverett Professor of Physics, don't like to limit themselves to just our world, though. In a 2D setting, for instance, all ...