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arXiv 1402.4167physics.atom-phcond-mat.quant-gasquant-ph
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冷原子系综中偶极-偶极相互作用引起的光散射抑制的观测

Observation of suppression of light scattering induced by dipole-dipole interactions in a cold atomic ensemble

J. Pellegrino, R. Bourgain, S. Jennewein, Y. R. P. Sortais, S. D. Jenkins, J. Ruostekoski, A. Browaeys

摘要:

本文研究了在偶极-偶极相互作用下,用近共振弱激光照射冷铷原子云时集体散射的出现。原子样品的大小与光的波长相当。当原子数从1逐渐增加到450时,我们观察到谱线变宽,出现小的红移,与此一致的是,相对于无相互作用原子的情况,散射光受到强烈的抑制。包括内部原子级结构的数值模拟与数据一致。

英文摘要:

We study the emergence of collective scattering in the presence of dipole-dipole interactions when we illuminate a cold cloud of rubidium atoms with a near-resonant and weak intensity laser. The size of the atomic sample is comparable to the wavelength of light. When we gradually increase the atom number from 1 to 450, we observe a broadening of the line, a small red shift and, consistently with these, a strong suppression of the scattered light with respect to the noninteracting atom case. Numerical simulations, which include the internal atomic level structure, agree with the data.

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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