title: Use of electron correlation to make attosecond measurements without attosecond pulses.
abstract: We describe how correlations between electrons can be used to trace the dynamics of correlated two-electron ionization with attosecond precision, without using attosecond pulses. The approach is illustrated using the example of Auger or Coster-Kronig decay triggered by photoionization with an extreme ultraviolet pulse. It requires correlated measurements of angle-resolved energy spectra of both the photo- and Auger electrons in the presence of a laser pulse. To reconstruct the dynamics, we use not only classical time and energy correlation, but also entanglement between the two electrons.
authors.affiliation: Photonics Institute, Vienna University of Technology, Gusshausstrasse 27/387, A-1040 Vienna, Austria.
authors.forename: Olga
authors.initials: O
authors.lastname: Smirnova
authors.forename: Vladislav S
authors.initials: VS
authors.lastname: Yakovlev
authors.forename: Misha
authors.initials: M
authors.lastname: Ivanov