(Adv. Mater. 27/2023)

The Age of Quantum Materials This quantum materials special issue, guest edited by Nicholas R. Glavin, Pulickel M. Ajayan, and Swastik Kar addresses types of quantum materials, quantum phenomena in materials, and quantum devices, and looks forward to the coming quantum age. The cover image represents the intersection between quantum phenomena and materials science. The lattice structure depicts quantum entanglement between the atoms in the lattice to form a tetrahedron, signifying the famous materials science tetrahedron, depicting the link between property, performance, processing, and structure.