Journal
PHYSICAL REVIEW LETTERS
Volume 129, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.100602
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Funding
- Agence Nationale de la Recherche [ANR-19-CE30-0028-01, ANR-21-CE47-0009]
- European Union Horizon 2020 Research and Innovation Program [820392]
- Region Ile-de-France
- Institut Universitaire de France (IUF)
- Agence Nationale de la Recherche (ANR) [ANR-19-CE30-0028, ANR-21-CE47-0009] Funding Source: Agence Nationale de la Recherche (ANR)
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We report on the observation of a prethermal state in a nonequilibrium, two-dimensional fluid of light. By directly measuring the first order coherence function of the fluid, we observe the emergence of algebraic correlations, which resemble the properties of thermal superfluids. Increasing the fluctuations leads to a transition from algebraic to short-range correlations. This phenomenon is interpreted as a nonequilibrium precursor of the Kosterlitz-Thouless transition.
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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