Atomic collisions provide key insights into one of the most fundamental forces of nature – the Coulomb force. The study of atomic collisions is primarily used to understand the dynamics of charged particle interactions, but is vital to other areas of physics, such as plasma physics, astrophysics, and biophysics. Our research uses state-of-the-art high performance computing techniques to model various collision processes and provide guidance to our experimental colleagues. We are also studying how new matter wave forms, known as twisted electrons, interact with atoms and how these exciting and strange particles differ from their untwisted counterparts. 

The goal of ultrafast physics is to understand electronic motion on its natural timescale. This is typically achieved by studying the interaction of atoms and molecules with short, high-intensity laser pulses. We use sculpted laser pulses to study processes such as above threshold ionization, tunneling ionization, and high-order harmonic generation. Sculpted pulses have unique properties that can be used to access physical properties of atoms and molecules that are otherwise inaccessible, such as their rotational properties.  They can also be used to create atomic states useful in quantum computing applications. Our goals are to identify new techniques for the study of rotational properties of atoms and to find efficient methods of generating atomic states for use in quantum computers.