Nonequilibrium Precondensation of Classical Waves in Two Dimensions Propagating through Atomic Vapors
| Autor: | Antonio Picozzi, Josselin Garnier, Neven Šantić, Robin Kaiser, Adrien Fusaro, Sabeur Salem |
|---|---|
| Přispěvatelé: | Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB), Laboratoire Ondes et Désordre (LOD), Centre National de la Recherche Scientifique (CNRS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Centre de Mathématiques Appliquées - Ecole Polytechnique ( CMAP ), École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de Physique de Nice ( UMR 7010 CNRS-UNS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut Non Linéaire de Nice ( INLN ), Centre de Mathématiques Appliquées - Ecole Polytechnique (CMAP), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique de Nice (UMR 7010 CNRS-UNS), Institut Non Linéaire de Nice (INLN)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Quantum fluid
Gaussian General Physics and Astronomy Non-equilibrium thermodynamics 01 natural sciences 010305 fluids & plasmas symbols.namesake [ MATH.MATH-AP ] Mathematics [math]/Analysis of PDEs [math.AP] [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST] Nonlinear medium 0103 physical sciences [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP] [ MATH.MATH-ST ] Mathematics [math]/Statistics [math.ST] 010306 general physics Nonlinear Schrödinger equation ComputingMilieux_MISCELLANEOUS nonlinear Schrődinger equation non-equilibrium precondensation Physics [PHYS]Physics [physics] Condensation [MATH.MATH-PR]Mathematics [math]/Probability [math.PR] Thermalisation Quantum electrodynamics symbols Relaxation (physics) [ MATH.MATH-PR ] Mathematics [math]/Probability [math.PR] |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2018, 120 (5), ⟨10.1103/PhysRevLett.120.055301⟩ Physical Review Letters, American Physical Society, 2018, 120 (5), 〈10.1103/PhysRevLett.120.055301〉 ResearcherID |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.120.055301⟩ |
| Popis: | The nonlinear Schrodinger equation, used to describe the dynamics of quantum fluids, is known to be valid not only for massive particles but also for the propagation of light in a nonlinear medium, predicting condensation of classical waves. Here we report on the initial evolution of random waves with Gaussian statistics using atomic vapors as an efficient two dimensional nonlinear medium. Experimental and theoretical analysis of near field images reveal a phenomenon of nonequilibrium precondensation, characterized by a fast relaxation towards a precondensate fraction of up to 75%. Such precondensation is in contrast to complete thermalization to the Rayleigh-Jeans equilibrium distribution, requiring prohibitive long interaction lengths. |
| Databáze: | OpenAIRE |
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