Organic charged polaritons in the ultrastrong coupling regime Article Swipe
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· 2022
· Open Access
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· DOI: https://doi.org/10.1103/physrevresearch.4.023016
· OA: W3198242393
We embedded an all-hydrocarbon-based carbocation in a metallic microcavity\nthat was tuned to resonance with an electronic transition of the carbocation.\nThe measured Rabi splitting was 41% of the excitation energy, putting the\nsystem well into the ultrastrong coupling regime. Importantly, due to the\nintrinsic charge on the carbocation, the polaritons that form carry a\nsignificant charge fraction $0.55 e_0$ and a large charge-to-mass ratio ($\\sim\n2400 e_0 / m_0$). Moreover, the ground state of the ultrastrongly coupled\nsystem is calculated to carry about one percent of one elementary charge,\nimplying a potentially enhanced charge transport across the molecules. These\nunique properties of our system, together with its convenient preparation,\nprovide a practical platform to study charged polaritons in the ultrastrong\ncoupling regime.\n
