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Emission control of entangled electrons in photoionisation of a hydrogen molecule

  • Farshad Shobeiry,
  • Patrick Fross,
  • Hemkumar Srinivas,
  • Thomas Pfeifer,
  • Robert Moshammer,
  • Anne Harth

摘要

For photo-dissociation of a single hydrogen molecule ( \(H_2\) H 2 ) with combined XUV and IR laser pulses, we demonstrate optical control of the emission direction of the photoelectron with respect to the outgoing neutral fragment (the H-atom). Depending on the relative delay between the two laser fields, adjustable with sub-femtosecond time resolution, the photoelectron is emitted into the same hemisphere as the H-atom or opposite. This emission asymmetry is a result of entanglement of the two-electron final-state involving the spatially separated bound and emitted electron.