학술논문
Attosecond Coherent Electron Motion in Auger-Meitner Decay
Document Type
Working Paper
Author
Li, Siqi; Driver, Taran; Rosenberger, Philipp; Champenois, Elio G.; Duris, Joseph; Al-Haddad, Andre; Averbukh, Vitali; Barnard, Jonathan C. T.; Berrah, Nora; Bostedt, Christoph; Bucksbaum, Philip H.; Coffee, Ryan; DiMauro, Louis F.; Fang, Li; Garratt, Douglas; Gatton, Averell; Guo, Zhaoheng; Hartmann, Gregor; Haxton, Daniel; Helml, Wolfram; Huang, Zhirong; LaForge, Aaron C.; Kamalov, Andrei; Knurr, Jonas; Lin, Ming-Fu; Lutman, Alberto A.; MacArthur, James P.; Marangos, Jon P.; Nantel, Megan; Natan, Adi; Obaid, Razib; O'Neal, Jordan T.; Shivaram, Niranjan H.; Schori, Aviad; Walter, Peter; Wang, Anna Li; Wolf, Thomas J. A.; Zhang, Zhen; Kling, Matthias F.; Marinelli, Agostino; Cryan, James P.
Source
Subject
Language
Abstract
In quantum systems, coherent superpositions of electronic states evolve on ultrafast timescales (few femtosecond to attosecond, 1 as = 0.001 fs = 10^{-18} s), leading to a time dependent charge density. Here we exploit the first attosecond soft x-ray pulses produced by an x-ray free-electron laser to induce a coherent core-hole excitation in nitric oxide. Using an additional circularly polarized infrared laser pulse we create a clock to time-resolve the electron dynamics, and demonstrate control of the coherent electron motion by tuning the photon energy of the x-ray pulse. Core-excited states offer a fundamental test bed for studying coherent electron dynamics in highly excited and strongly correlated matter.