Ionic Impurity in a Bose-Einstein Condensate at Submicrokelvin Temperatures.

Ionic Impurity in a Bose-Einstein Condensate at Submicrokelvin Temperatures.
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亚微开尔文温度下玻色-爱因斯坦凝聚体中的离子杂质

DOI:
10.1103/physrevlett.120.193401
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发表时间:
2018
影响因子:
8.6
通讯作者:
F. Meinert
F. Meinert
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
K. S. Kleinbach;F. Engel;T. Dieterle;R. Löw;T. Pfau;F. Meinert

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浸没在玻色-爱因斯坦凝聚体中的里德堡原子通过电子-原子和离子-原子相互作用与量子气体相互作用。为了抑制通常占主导地位的电子-中性相互作用,主量子数高达2,4,000,000的里德伯格态由一种紧密捕获的微米级凝聚体激发而来。这使我们能够探索里德堡轨道远远超过原子样本大小的区域。在这种情况下,里德堡激发光谱的详细线形分析为离子-原子在远低于微开尔文的温度下的相互作用提供了明确的证据。我们的结果可能为探索带电量子杂质和相关的极化子物理开辟进入离子-原子散射的量子区域的途径。
Rydberg atoms immersed in a Bose-Einstein condensate interact with the quantum gas via electron-atom and ion-atom interaction. To suppress the typically dominant electron-neutral interaction, Rydberg states with a principal quantum number up toare excited from a dense and tightly trapped micron-sized condensate. This allows us to explore a regime where the Rydberg orbit exceeds the size of the atomic sample by far. In this case, a detailed line shape analysis of the Rydberg excitation spectrum provides clear evidence for ion-atom interaction at temperatures well below a microkelvin. Our results may open up ways to enter the quantum regime of ion-atom scattering for the exploration of charged quantum impurities and associated polaron physics.
DOI: 10.1103/physrevx.6.031020
发表时间: 2016-05
期刊: arXiv: Atomic Physics
影响因子: --
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