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Explore the simulation of light-driven hot carrier dynamics and transport phenomena using the LightMatter.jl package in this 28-minute conference talk from JuliaCon Global 2025. Discover how light-matter interactions drive fundamental processes in photosynthesis, vision, photovoltaics, and photocatalysis, and learn why understanding these non-equilibrium electronic and phononic transport phenomena is crucial for developing optical sensors, nanolithography, and quantum technologies. Examine the LightMatter.jl framework, which enables simulation of time-dependent electronic energy distribution evolution due to laser excitation in metals, utilizing Julia's metaprogramming capabilities to construct custom coupled ordinary differential equations that can be propagated using DiffEq.jl. Learn about the package's current capabilities including energy-resolved Boltzmann equations, the Two-Temperature Model, the Athermal Electron Model, and time-dependent Schrödinger equation solutions for given Hamiltonians in the dipole approximation. Understand how the modular design allows users to easily implement and test custom components such as lifetimes, parameters, and matrix elements while accessing all other package features, making it possible to design simulations that capture the specific physics of interest at the required theoretical level.
