The Excitation Ladder of Cavity Polaritons
arXiv:2004.10845 · doi:10.1103/PhysRevLett.125.067403
Abstract
Multidimensional coherent spectroscopy directly unravels multiply excited states that overlap in a linear spectrum. We report multidimensional coherent optical photocurrent spectroscopy in a semiconductor polariton diode and explore the excitation ladder of cavity polaritons. We measure doubly and triply avoided crossings for pairs and triplets of exciton-polaritons, demonstrating the strong coupling between light and dressed doublet and triplet semiconductor excitations. These results demonstrate that multiply excited excitonic states strongly coupled to a microcavity can be described as two coupled quantum-anharmonic ladders.
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- Phase-cycling and double-quantum two-dimensional electronic spectroscopy using a common-path birefringent interferometer
- Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime
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