Nonequilibrium Prethermal States in a Two-Dimensional Photon Fluid
Murad Abuzarli, Nicolas Cherroret, Tom Bienaimé, Quentin Glorieux
Abstract
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.
Topics & Concepts
Non-equilibrium thermodynamicsPhysicsSuperfluidityCoherence (philosophical gambling strategy)CrossoverExponential functionFluid dynamicsAlgebraic numberQuantum mechanicsArtificial intelligenceMathematical analysisComputer scienceMathematicsQuantum many-body systemsAdvanced Thermodynamics and Statistical MechanicsQuantum, superfluid, helium dynamics