Publication Date

8-7-2020

Document Type

Article

Department

Physics and Astronomy

Publication Title

Physical Review Letters

Volume

125

Issue

6

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.

Funding Number

1125844

Funding Sponsor

National Science Foundation

Comments

©2020 American Physical Society

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