Doran Raccah

The MesoScience Lab develops new computational tools to study excited‐state processes in molecular materials on the nanometer‐to‐micron length scale.  We work in two broad spaces 

1. Stochastic Quantum Dynamics:

   We implement formally exact, size‐invariant (O(1) scaling) algorithms—such as adaptive Hierarchy of Pure States (adHOPS)—to simulate exciton transport and non‐Markovian effects in molecular semiconductors.  By correlating these simulations with state‐of‐the‐art spectroscopic measurements, we reveal how electronic couplings and vibrational motion govern exciton delocalization and migration over hundreds of nanometers.  

2. Bioenergetics & Photosynthetic Modeling:

   We build multiscale, integrative models of photosystem II and related light‐harvesting assemblies to dissect regulatory mechanisms in natural photosynthesis.  By incorporating structural biology, spectroscopy, and biochemical data, we identify design principles for rewiring photosynthetic networks—aiming to develop physical principles for enhancing crop yields or algal biofactory production.