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arXiv 1410.7853cond-mat.quant-gas
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玻色-爱因斯坦凝聚体中的里德伯电子

Rydberg Electrons in a Bose-Einstein Condensate

Jia Wang, Marko Gacesa, Robin Côté

摘要:

研究了超冷里德伯原子与原子玻色-爱因斯坦凝聚体(BEC)的混合系统。里德伯电子与BEC原子之间的耦合导致声子的激发,声子的交换引起里德伯原子之间的汤川相互作用。由于小的电子质量,与这种准粒子介导的相互作用相关的有效电荷可以很大,而其范围等于BEC的愈合长度,这可以通过调整BEC原子的散射长度来调整。我们发现,对于小的愈合长度,BEC的畸变可以“成像”里德伯电子的波函数密度,而大的愈合长度诱导两个里德伯原子之间的吸引Yukawa势,可以形成一种新型的超长程分子.我们讨论这两种情况下的一个现实的系统。

英文摘要:

We investigate a hybrid system composed of ultracold Rydberg atoms immersed in an atomic Bose-Einstein condensate (BEC). The coupling between the Rydberg electrons and BEC atoms leads to the excitation of phonons, the exchange of which induces Yukawa interaction between Rydberg atoms. Due to the small electron mass, the effective charge associated with this quasi-particle-mediated interaction can be large, while its range is equal to the healing length of the BEC, which can be tuned by adjusting the scattering length of the BEC atoms. We find that for small healing lengths, the distortion of the BEC can "image" the wave function density of the Rydberg electron, while large healing lengths induce an attractive Yukawa potential between the two Rydberg atoms that can form a new type of ultra-long-range molecule. We discuss both cases for a realistic system.

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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