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arXiv · 1809.08876

Strong coupling of ionising transitions

Erika Cortese·Iacopo Carusotto·Raffaele Colombelli·Simone De Liberato
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Abstract

We demonstrate that a ionising transition can be strongly coupled to a photonic resonance. The strong coupling manifests itself with the appearance of a narrow optically active resonance below the ionisation threshold. Such a resonance is due to electrons transitioning into a novel bound state created by the collective coupling of the electron gas with the vacuum field of the photonic resonator. Applying our theory to the case of bound-to-continuum transitions in microcavity-embedded doped quantum wells, we show how those strong-coupling features can be exploited as a novel knob to tune both optical and electronic properties of semiconductor heterostructures.

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Erika Cortese, Iacopo Carusotto, Raffaele Colombelli, Simone De Liberato. 2018-09-24. Strong coupling of ionising transitions. https://doi.org/10.1364/optica.6.000354

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