A new study published in Nature reports the discovery of over a dozen previously unseen quantum states in twisted molybdenum ditelluride, expanding the “quantum zoo” of exotic matter. Among them are states that could be used to create what is known, theoretically at the moment, as a topological quantum computer. Topological quantum computers will have unique quantum properties that should make them less prone to the errors that hinder quantum computers, which are currently built with superconducting materials. But superconducting materials are disrupted by magnets, which have until now been used in attempts to create the topological states needed for this (still unrealized) next generation of quantum computers. Lead author from Howard Family Professor of Nanoscience at Columbia, Xiaoyang Zhu’s zoo solves that problem: The states he and his team discovered can all be created without an external magnet, thanks to the special properties of a material called twisted molybdenum ditelluride. These states, including magnet-free fractional quantum Hall effects, could support non-Abelian anyons—key building blocks for more stable, topological quantum computers. The discoveries were made using a pump-probe spectroscopy technique that detects subtle shifts in quantum states with high sensitivity, revealing fractional charges and dynamic quantum behavior.