Article Dans Une Revue Phys.Rev.Lett. Année : 2022

Nonequilibrium Prethermal States in a Two-Dimensional Photon Fluid

Résumé

We report on the observation of a prethermal state in a nonequilibrium, two-dimensional fluid of light. Direct measurements of the first order coherence function of the fluid reveal the dynamical emergence of algebraic correlations, a quasi-steady-state with properties close to those of thermal superfluids. By a controlled increase of the fluctuations, we observe a crossover from algebraic to short-range (exponential) correlations. We interpret this phenomenon as a nonequilibrium precursor of the Kosterlitz-Thouless transition.

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hal-03621458 , version 1 (17-10-2024)

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Murad Abuzarli, Nicolas Cherroret, Tom Bienaimé, Quentin Glorieux. Nonequilibrium Prethermal States in a Two-Dimensional Photon Fluid. Phys.Rev.Lett., 2022, 129 (10), pp.100602. ⟨10.1103/PhysRevLett.129.100602⟩. ⟨hal-03621458⟩
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