Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, SP, Brazil.
Departamento de Física, Instituto Tecnológico de Aeronaútica, 12.228-900 São José dos Campos, SP, Brazil.
Proc Natl Acad Sci U S A. 2017 Nov 28;114(48):12691-12695. doi: 10.1073/pnas.1713693114. Epub 2017 Nov 13.
We report the results of the direct comparison of a freely expanding turbulent Bose-Einstein condensate and a propagating optical speckle pattern. We found remarkably similar statistical properties underlying the spatial propagation of both phenomena. The calculated second-order correlation together with the typical correlation length of each system is used to compare and substantiate our observations. We believe that the close analogy existing between an expanding turbulent quantum gas and a traveling optical speckle might burgeon into an exciting research field investigating disordered quantum matter.
我们报告了自由膨胀的玻色-爱因斯坦凝聚体和传播的光学散斑图案的直接比较结果。我们发现这两种现象在空间传播过程中存在着惊人相似的统计特性。所计算的二阶相关函数以及每个系统的典型相关长度用于比较和证实我们的观察结果。我们相信，膨胀的湍流量子气体和传播的光学散斑之间存在的紧密相似性可能会发展成为一个令人兴奋的研究领域，探索无序量子物质。
