标题： 高极化原子之间的能量传输 显示英文标题

标题： Energy Transport Among Highly-Polarized Atoms

摘要： 一个几V/cm的静态电场会移动磁光陷阱中超冷里德伯原子的能量水平。 对于给定的主量子数，大多数能量水平在零场时几乎简并，并随着场的增加而展开形成一个簇。 我们激发里德伯原子到簇中心附近的能量水平，其中间距几乎是谐波的，并允许它们通过共振偶极-偶极相互作用交换能量。 我们测量能量从簇中心扩散出去的时间演化，这表明系统在长时间相互作用下无法热化。 一个仅包含系统几个基本特征的计算模型与这一结果定性一致。 显示英文摘要

摘要： A static electric field of a few V/cm shifts the energy levels of ultracold Rydberg atoms in a magneto-optical trap. For a given principle quantum number, most of the energy levels are nearly degenerate at zero field and fan out with increasing field to form a manifold. We excite Rydberg atoms to energy levels near the center of the manifold, where the spacing is nearly harmonic, and allow them to exchange energy via resonant dipole-dipole interactions. We measure the time evolution as energy spreads away from the center of the manifold, which reveals that the system fails to thermalize for long interaction times. A computational model that includes only a few essential features of the system qualitatively agrees with this result.