Ultra-Strong Light-Matter Coupling Regime with Polariton Dots

Abstract

The regime of ultrastrong light-matter interaction has been investigated theoretically and experimentally, using zero-dimensional electromagnetic resonators coupled with an electronic transition between two confined states of a semiconductor quantum well. We have measured a splitting between the coupled modes that amounts to 48% of the energy transition, the highest ratio ever observed in a light-matter coupled system. Our analysis, based on a microscopic quantum theory, shows that the nonlinear polariton splitting, a signature of this regime, is a dynamical effect arising from the self-interaction of the collective electronic polarization with its own emitted field.

References in corpus (2)

• Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
• Optical properties of metal-dielectric-metal microcavities in the THz frequency range

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