ArticleNature communications2019
Dispersion relation of the collective excitations in a resonantly driven polariton fluid.
Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Collective excitations of a bound-in-the-continuum condensate.Nature communications · 2023Article
- Room-temperature polariton quantum fluids in halide perovskites.Nature communications · 2022Article
- Quantum fluids of light in all-optical scatterer lattices.Nature communications · 2021Article
- Polariton fluids for analogue gravity physics.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2020Article
- Observation of quantum depletion in a non-equilibrium exciton-polariton condensate.Nature communications · 2020Article
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9 authors.
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Abstract
Exciton-polaritons in semiconductor microcavities constitute the archetypal realization of a quantum fluid of light. Under coherent optical drive, remarkable effects such as superfluidity, dark solitons or the nucleation of vortices have been observed, and can be all understood as specific manifestations of the condensate collective excitations. In this work, we perform a Brillouin scattering experiment to measure their dispersion relation [Formula: see text] directly. The results, such as a speed of sound which is apparently twice too low, cannot be explained upon considering the polariton condensate alone. In a combined theoretical and experimental analysis, we demonstrate that the presence of an excitonic reservoir alongside the polariton condensate has a dramatic influence on the characteristics of the quantum fluid, and explains our measurement quantitatively. This work clarifies the role of such a reservoir in polariton quantum hydrodynamics. It also provides an unambiguous tool to determine the condensate-to-reservoir fraction in the quantum fluid, and sets an accurate framework to approach ideas for polariton-based quantum-optical applications.
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