Attosecond coherent electron motion in Auger-Meitner decay

Li, Siqi; Driver, Taran; Rosenberger, Philipp; Champenois, Elio G.; Duris, Joseph; Al-Haddad, Andre; Averbukh, Vitali; Barnard, Jonathan T.; Berrah, Nora; Bostedt, Christoph; Bucksbaum, Philip H.; Coffee, Ryan N.; 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 A.; Zhang, Zhen; Kling, Matthias F.; Marinelli, Agostino; Cryan, James P.

doi:10.1126/science.abj2096

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Attosecond coherent electron motion in Auger-Meitner decay

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Abstract

In quantum systems, coherent superpositions of electronic states evolve on ultrafast time scales (few femtoseconds to attoseconds; 1 attosecond = 0.001 femtoseconds = 10 -18 seconds), leading to a time-dependent charge density. Here we performed time-resolved measurements using attosecond soft x-ray pulses produced by a free-electron laser, to track the evolution of a coherent core-hole excitation in nitric oxide. Using an additional circularly polarized infrared laser pulse, we created a clock to time-resolve the electron dynamics and demonstrated 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.

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Li, Siqi, Driver, Taran, Rosenberger, Philipp, Champenois, Elio G., Duris, Joseph, Al-Haddad, Andre, Averbukh, Vitali, Barnard, Jonathan T., Berrah, Nora, Bostedt, Christoph, Bucksbaum, Philip H., Coffee, Ryan N., 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 A., Zhang, Zhen, Kling, Matthias F., Marinelli, Agostino, Cryan, James P.. 2022-01-06. Attosecond coherent electron motion in Auger-Meitner decay. https://doi.org/10.1126/science.abj2096

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