标题： 超冷原子在光学无序势场中的三维定位 显示英文标题

标题： Three-dimensional localization of ultracold atoms in an optical disordered potential

摘要： 我们报告了对悬挂在重力作用下并释放到具有短相关长度的三维光学无序势场中的超冷原子的三维定位研究。 我们观察到由稳定局域部分和扩散部分组成的密度分布。 我们的观察结果与安德森局域的自洽理论相容，考虑了实验的具体特征，特别是放置在无序势场中的原子的广泛能量分布。 我们观察到的局域化不能解释为能量低于经典渗流阈值的粒子的捕获。 显示英文摘要

摘要： We report a study of three-dimensional (3D) localization of ultracold atoms suspended against gravity, and released in a 3D optical disordered potential with short correlation lengths in all directions. We observe density profiles composed of a steady localized part and a diffusive part. Our observations are compatible with the self-consistent theory of Anderson localization, taking into account the specific features of the experiment, and in particular the broad energy distribution of the atoms placed in the disordered potential. The localization we observe cannot be interpreted as trapping of particles with energy below the classical percolation threshold.