Intercavity phonons and dynamics in coupled polariton cavities

Iliana Carmona-Moreno; Grover Andrade-Sánchez; Hugo A Lara-García; Giuseppe Pirruccio; Arturo Camacho-Guardian

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arXiv · 2603.23479

Intercavity phonons and dynamics in coupled polariton cavities

Iliana Carmona-Moreno·Grover Andrade-Sánchez·Hugo A Lara-García·Giuseppe Pirruccio·Arturo Camacho-Guardian

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Abstract

Intercavity polaritons, hybrid quasiparticles with spatially separated photonic and excitonic components, provide a platform to engineer structured light-matter states. We show that resonant driving of the middle polariton branch leads to a qualitatively distinct dynamical regime in which coherent Rabi oscillations are suppressed, and the system evolves monotonically toward its steady state. Including interactions, we demonstrate that this regime supports Bogoliubov excitations with a phonon-like dispersion at low momenta. These collective modes inherit interactions from the excitonic fraction, while preserving the intrinsically intercavity nature of the quasiparticles.

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Iliana Carmona-Moreno, Grover Andrade-Sánchez, Hugo A Lara-García, Giuseppe Pirruccio, Arturo Camacho-Guardian. 2026-03-24. Intercavity phonons and dynamics in coupled polariton cavities. https://arxiv.org/abs/2603.23479

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