Year: 2025
Type: article
Abstract: We develop an analytical, microscopic theory to describe polaron-polariton dispersion, formed by hybridizing excitons, photons, and phonons, as well as their coherent dynamics inside optical cavities. Starting from a microscopic light-matter Hamiltonian, we derive a simple analytical model by employing a nonperturbative treatment of the phonon and photon couplings to excitons. Within our theoretical framework, phonons are treated as classical fields, which are then quantized via the Floquet formalism. We show that, to a good approximation, the entire polaron-polariton system can be described with a band picture despite the phonons breaking translational symmetry. Our theory also sheds light on the long-lived coherent ballistic motion of exciton-polaritons with high excitonic character that propagate with group velocities lower than expected from pure exciton-polariton bands, offering a microscopic explanation for these puzzling experimental observations.
Source: Nano Letters
Institution: Texas A&M University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: G1453181110, Track 4: Advanced CI Coordination Ecosystem: Monitoring and Measurement Services, G2322324795, G3562386289, Track 1: ACCESS Resource Allocations Marketplace and Platform Services (RAMPS), G4010157413, ACO: An Open CI Ecosystem to Advance Scientific Discovery (OpenCI), Track 3: COre National Ecosystem for CyberinfrasTructure (CONECT), G5367127336, G5464919783, Track 2: Customized Multi-tier Assistance, Training, and Computational Help (MATCH) for End User ACCESS to CI
OpenAlex ID: W4415353152