AI 中文总结
该研究用傅里叶成像测量冷87Rb原子云超辐射发射的空间模式，观察到特定发射结构，通过空间滤波分离通道并发现强度规律，与模型比较吻合良好，证明集体跳跃算符可测可操控。
AI 中文摘要
我们使用傅里叶成像测量了冷87Rb原子云超辐射发射相关的空间模式。观察到高度定向的环形发射结构，对应于与系综最超辐射模式相关的单个集体跳跃算符。通过空间滤波分离该通道，发现强度随原子数超线性缩放的典型超辐射爆发。将结果与描述各衰减通道竞争的两个模型比较，吻合良好。表明Carmichael等人提出的集体跳跃算符可被测量和操控。
英文摘要
We measure the spatial pattern associated with the superradiant emission from a cloud of cold 87Rb atoms using Fourier imaging. We observe a highly directional, ring-shaped emission structure, which corresponds to a single collective jump operator associated to the most superradiant mode of the ensemble. Using spatial filtering, we isolate this channel and find the typical superradiant burst with superlinear scaling of the intensity with atom number. We compare our results to two models that describe the competition between the various decay channels, finding good agreement. Our work shows that the collective jump operators introduced by Carmichael et al. [Optics Communications 179, 417 (2000)] can be measured and manipulated.
