Entanglement before and after ultracold scattering

 Entanglement is a vital resource in quantum computation, quantum sensing, and quantum communication. It is generated when, for example, two systems interact, and scattering represents one of the most fundamental interactions to consider. But how much entanglement is generated during a collision, what is its correlation with scattering observables, and how is it reflected in the underlying S-matrix? This talk presents a formalism developed to answer these questions, as well as to examine the angular dependence of the entanglement generated by the scattering.

After addressing entanglement post-collision, the focus shifts to examining how the initial entanglement between the molecules before scattering influences the extent of control over scattering cross sections. Contrary to intuition, greater initial entanglement does not necessarily lead to better control.