Ultrafast Kapitza-Dirac effect. - Lin, Kang; Eckart, Sebastian; Liang, Hao; Hartung, Alexander; Jacob, Sina; Ji, Qinying; Schmidt, Lothar Ph. H.; Schöffler, Markus S.; Jahnke, Till; Kunitski, Maksim; Dörner, Reinhard (Science (pre-March 2025), 2024)