Theoretical Analysis of Exciton Wave Packet Dynamics in Polaritonic Wires

Abstract

We present a comprehensive study of exciton wave packet evolution in disordered lossless polaritonic wires. Our simulations reveal signatures of ballistic, diffusive, and subdiffusive exciton dynamics under strong light-matter coupling and identify the typical timescales associated with the transitions between these qualitatively distinct transport phenomena. We determine optimal truncations of the molecular subsystem and radiation field required for generating reliable time-dependent data from computational simulations at affordable cost. The time evolution of the photonic part of the wave function reveals that many cavity modes contribute to the dynamics in a non-trivial fashion. Hence, a sizable number of photon modes is needed to describe exciton propagation with reasonable accuracy. We find and discuss an intriguingly common lack of dominance of the photon mode on resonance with the molecular system both in the presence and absence of disorder. We discuss the implications of our investigations to the development of theoretical models and analysis of experiments where coherent intermolecular energy transport and static disorder play an important role.

References in corpus (13)

• Extraordinary exciton conductance induced by strong coupling
• Cavity enhanced transport of excitons
• Molecular polaritonics: Chemical Dynamics under strong Light-Matter Coupling
• Unveiling the mixed nature of polaritonic transport: From enhanced diffusion to ballistic motion approaching the speed of light
• Ultrafast imaging of polariton propagation and interactions
• Tuning the coherent propagation of organic exciton-polaritons through dark state delocalization
• Microscopic Theory of Multimode Polariton Dispersion in Multilayered Materials
• Large Random Arrowhead Matrices: Multifractality, Semi-Localization, and Protected Transport in Disordered Quantum Spins Coupled to a Cavity
• Disorder-enhanced transport in a chain of lossy dipoles strongly coupled to cavity photons
• Tuning the Coherent Propagation of Organic Exciton-Polaritons through the Cavity Q-factor
• Vibrational polariton transport in disordered media
• Characterising path-, ray- and branch spaces of order trees, and end spaces of infinite graphs
• Probing and controlling terahertz-driven structural dynamics with surface sensitivity

Cited by in corpus (6)

• Enhanced Excitation Energy Transfer under Strong Light-Matter Coupling: Insights from Multi-Scale Molecular Dynamics Simulations
• Coherent transient exciton transport in disordered polaritonic wires
• Photochemical Initiation of Polariton Propagation
• Disentangling enhanced diffusion and ballistic motion of excitons coupled to Bloch surface waves with molecular dynamics simulations
• Mirror-induced effects in cavity polaritonics: Influence on edge states
• Polariton-induced Purcell effects via a reduced semiclassical electrodynamics approach