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arXiv · 2501.16266

Protecting Intercavity Polaritons in Strongly Coupled Cavities

Rodrigo Sánchez-Martínez·Yesenia A. García-Jomaso·David Ley-Domínguez·César L. Ordóñez-Romero·Hugo A. Lara-García·Giuseppe Pirruccio·Arturo Camacho-Guardian
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Abstract

We theoretically designed and experimentally demonstrated a mechanism to protect a spatially segregated mixed light-matter state, known as intercavity exciton-polariton in strongly coupled optical cavities. This excitation, shared across the coupled cavity array, exhibits remarkable robustness over a wide momentum range, without compromising photon-exciton mixing or the spatial separation of its photonic and excitonic components, which also enables a tunable heavy mass. Additionally, we unveil a direct connection between the transparency window, characteristic of slow-light experiments, and the protection of the intercavity polariton nature. Both phenomena originate from the strategic design of an energy-level landscape featuring a $\Lambda$-scheme, opening new avenues for exploring and utilizing these unique optical excitations in advanced photonic applications.

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Rodrigo Sánchez-Martínez, Yesenia A. García-Jomaso, David Ley-Domínguez, César L. Ordóñez-Romero, Hugo A. Lara-García, Giuseppe Pirruccio, Arturo Camacho-Guardian. 2025-01-27. Protecting Intercavity Polaritons in Strongly Coupled Cavities. https://arxiv.org/abs/2501.16266

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