We develop ultrafast microscopy platforms to directly visualize how excitons, charges, spins, and polaritons move across nanoscale materials and interfaces. By imaging these dynamics in real (or reciprocal) space and real time, we aim to uncover not only the pathways of energy and information flow, but also the microscopic mechanisms that govern energy/charge transfer, charge separation, spin-selective transport, and coherent propagation. This approach allows us to reveal processes that are often hidden in conventional ensemble-averaged spectroscopy. 

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We use weak-to-strong light–matter coupling as a tunable physical parameter to reshape energy landscapes, suppress scattering, extend transport, and control coherent energy flow in molecular and quantum materials.

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