Loss rates for high- n, 49≲n≲150, 5sns ( S13 ) Rydberg atoms excited in an Sr84 Bose-Einstein condensate
Loss rates for high- n, 49≲n≲150, 5sns ( S13 ) Rydberg atoms excited in an Sr84 Bose-Einstein condensate
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在 Sr84 玻色-爱因斯坦凝聚态中激发的高 n, 49−n−150, 5sns (S13) 里德伯原子的损失率
DOI：
10.1103/physreva.102.063317
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发表时间：
2020
影响因子：
2.9
通讯作者：
Burgdörfer, J.
中科院分区：
文献类型：
--
作者：
Kanungo, S. K.;Whalen, J. D.;Lu, Y.;Killian, T. C.;Dunning, F. B.;Yoshida, S.;Burgdörfer, J.
给出了在密集玻色-爱因斯坦凝聚体中激发的锶里德伯原子的损失率的测量结果，其中主量子数为0，局域原子密度为0。两个主要过程导致损失，缔合电离和状态改变。研究了这两种损失通道的相对重要性，并利用一个模型讨论了它们与密度的依赖关系，该模型假定里德伯原子损失涉及里德伯核离子与基态原子之间的紧密碰撞。目前的测量结果与以前使用铷里德伯原子获得的结果进行了比较。对于这两种物质，观测到的损失率都是相当大的，并且限制了对浸在量子简并气体中的里德伯原子进行测量的时间尺度。
Measurements of the loss rates for strontiumRydberg atoms excited in a dense Bose-Einstein condensate are presented for values of principal quantum numberin the rangeand local atom densities ofto. Two main processes contribute to loss, associative ionization, and state changing. The relative importance of these two loss channels is investigated, and theirand density dependences are discussed using a model in which the Rydberg atom loss is presumed to involve a close collision between the Rydberg core ion and ground-state atoms. The present measurements are compared to earlier results obtained using rubidium Rydberg atoms. For both species the observed loss rates are sizable,, and limit the timescales over which measurements involving Rydberg atoms immersed in quantum degenerate gases can be conducted.