Ultrafast Condensed Matter Physics at Attoseconds

Abstract

Our understanding of how photons couple to different degrees of freedom in solids forms the bedrock of ultrafast physics and materials sciences. In this Perspective, the emergent ultrafast dynamics in condensed matters at the attosecond timescale have been intensively discussed. In particular, the focus is put on recent developments of attosecond dynamics of charge, exciton, and magnetism. New concepts and indispensable role of interactions among multiple degrees of freedom in solids are highlighted. The applications of attosecond electronic metrology and future prospects toward attosecond dynamics in condensed matters are further discussed. These pioneering studies promise the future development of advanced attosecond science and technology such as attosecond lasers, laser medical engineering, and ultrafast electronic devices.