Experimental demonstration of attosecond pump–probe spectroscopy with an X-ray free-electron laser

Zhaoheng Guo, Taran Driver, Sandra Beauvarlet, David Cesar, Joseph Duris, Paris Franz, Oliver Alexander, Dorian Bohler, Christoph Bostedt, Vitali Averbukh, Xinxin Cheng, Louis F. DiMauro, Gilles Doumy, Ruaridh Forbes, Oliver Geßner, James M. Glownia, Erik Isele, Andrei Kamalov, Kirk A. Larsen, Siqi Li, Xiang Li, Ming‐Fu Lin, Gregory A. McCracken, Razib Obaid, Jordan T. O’Neal, River Robles, Daniel Rolles, Marco Ruberti, Artem Rudenko, Daniel Slaughter, Nicholas Sudar, Emily Thierstein, Daniel R. Tuthill, Kiyoshi Ueda, Enliang Wang, Anna L. Wang, Jun Wang, Th. Weber, Thomas Wolf, Linda Young, Zhen Zhang, P. H. Bucksbaum, J. P. Marangos, Matthias F. Kling, Zhirong Huang, Peter Walter, Ludger Inhester, N. Berrah, James Cryan, Agostino Marinelli