Related Experiment Video
Updated: Jun 15, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Emission control of entangled electrons in photoionisation of a hydrogen molecule
Farshad Shobeiry1, Patrick Fross2, Hemkumar Srinivas2
1Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117, Heidelberg, Germany. shobeiry@mpi-hd.mpg.de.
Abstract:
For photo-dissociation of a single hydrogen molecule ( ) 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.
Related Concept Videos
Emission Spectra
The Bohr Model
Deactivation Processes: Jablonski Diagram
Chemical Ionization (CI) Mass Spectrometry
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Photoelectric Effect

