Physicists create long-sought topological quantum states

An interlocked ring pattern of virtual exotic particles called non-Abelian anyons — or nonabelions for short — has been created in a quantum computer for the first time. The particles’ paths form Borromean rings, three interlocking rings that can’t be pulled apart but don’t contain any linked pairs. The rings exist only as information inside a quantum computer. They could make the machines more robust to perturbations that create errors in their calculations.