Quantum Energy Diffusion in Polaritonic Wires
Kyle Kairys Emory University
Kyle Kairys (a,b), Gustavo J. R. Aroeira (a,b), Raphael Ribeiro (a,b)
(a) Department of Chemistry, Emory University
(b) Cherry Emmerson Center for Scientific Computation, Emory University
Long-range intermolecular energy transport has been observed in optical microcavities. In this work, coherent energy transfer dynamics was probed for exciton wave packets in organic microcavities. This investigation implemented a microscopically detailed computational photonic wire model that evaluates spacetime resolved wave packet evolution under strong light-matter interaction conditions. Simulations were performed for variable light-matter coupling strength, total system size, and molecular excited-state energy fluctuations. This allowed us to elucidate their impact on the intermolecular energy transport in a multimode polaritonic system.
We observed ultrafast ballistic, diffusive and subdiffusive (Anderson Localization) transport depending on the initial state and microscopic parameters. Our investigation has thus determined that, not only polariton transport, but also exciton wave packet propagation is controllable in optical microcavities and likely plays a previously overlooked role in enhancing intermolecular transport in polaritonic materials.
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