期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.213201
关键词
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资金
- FAPESP
- CNPq
- CAPES
- ARO [W911NF-08-1-0257]
- NSF [OISE-0756321]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [07/03758-0] Funding Source: FAPESP
In this work, we study the role of the ac Stark effects on the excitation of nS(1/2) cold Rydberg atoms produced in a rubidium magneto-optical trap. We have observed an atomic population in the nP(3/2) state after excitation of nS(1/2) for 29 <= n <= 37. Such an observation is normally attributed to binary collisions; however, the interaction between Rb nS(1/2) atoms is repulsive. To explain our results, the dipole-dipole interaction and ac Stark shifts from the excitation laser must be considered. We find that the Rydberg-atom-pair state asymptotically correlating to nP(3/2)+(n-1)P(3/2) is excited directly.
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