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arXiv 2009.08653quant-ph
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稠密偶极-偶极相互作用原子系综的光子集体发射

Collective emission of photons from dense, dipole-dipole interacting atomic ensembles

David Petrosyan, Klaus Mølmer

摘要:

我们研究了冷的、被囚禁的原子系综的集体辐射性质。我们认为高密度制度的平均原子间距离是可比的,或小于,由原子发出的共振光辐射的波长。我们发现,从激发原子系综的光子的发射率强烈增强拉长云。我们分析了原子系综的集体单激发本征态,发现吸收/发射光谱与非相互作用(低密度)或单原子光谱相比被加宽并向较低频率移动。我们还分析了发射的辐射的空间和时间的轮廓。最后,我们探讨了如何有效地激发集体超辐射态的原子系综从长寿命的存储状态,以实现量子计算和通信应用的物质-光接口。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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