论文标题
从致密的偶极 - 偶极相互作用的光子集体发射原子集合
Collective emission of photons from dense, dipole-dipole interacting atomic ensembles
论文作者
论文摘要
我们研究了原子的寒冷，被困的集合的集体辐射特性。我们认为，高密度状态的平均原子间距离与原子发出的谐振光辐射的波长相当或小。我们发现，对于伸长的云而言，来自激发原子集合的光子的发射速率得到了强烈增强。我们分析了原子集合的集体单激素特征状态，并发现与非相互作用（低密度）或单个原子光谱相比，吸收/发射光谱被扩展并转移到较低的频率。我们还分析了发射辐射的空间和时间分布。最后，我们探讨了如何从长期寿命的存储状态中有效地激发原子集合的集体超级速度状态，以便实现量子计算和通信应用程序的物质接口。
We study the collective radiation properties of cold, trapped ensembles of atoms. We consider the high density regime with the mean interatomic distance being comparable to, or smaller than, the wavelength of the resonant optical radiation emitted by the atoms. We find that the emission rate of a photon from an excited atomic ensemble is strongly enhanced for an elongated cloud. We analyze collective single-excitation eigenstates of the atomic ensemble and find that the absorption/emission spectrum is broadened and shifted to lower frequencies as compared to the non-interacting (low density) or single atom spectrum. We also analyze the spatial and temporal profile of the emitted radiation. Finally, we explore how to efficiently excite the collective super-radiant states of the atomic ensemble from a long-lived storage state in order to implement matter-light interfaces for quantum computation and communication applications.
