Nonequilibrium Prethermal States in a Two-Dimensional Photon Fluid

被引：9
|
作者：
Abuzarli, Murad [1 ]
Cherroret, Nicolas [1 ]
Bienaime, Tom [1 ,2 ,3 ,4 ]
Glorieux, Quentin [1 ]
机构：
[1] Sorbonne Univ, ENS PSL Univ, Coll France, CNRS,Lab Kastler Brossel, 4 Pl Jussieu, F-75005 Paris, France
[2] Univ Strasbourg, CESQ, F-67000 Strasbourg, France
[3] Univ Strasbourg, ISIS UMR 7006, F-67000 Strasbourg, France
[4] CNRS, F-67000 Strasbourg, France
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 10期
基金：
欧盟地平线“2020”;
关键词：
UNIVERSAL DYNAMICS; CONDENSATION; RELAXATION;
D O I：
10.1103/PhysRevLett.129.100602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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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页数：6
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