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Title: Dipole-dipole-coupled double-Rydberg molecules
Authors: Kiffner, M.
Park, H.
Li, W. 
Gallagher, T.F.
Issue Date: 10-Sep-2012
Citation: Kiffner, M., Park, H., Li, W., Gallagher, T.F. (2012-09-10). Dipole-dipole-coupled double-Rydberg molecules. Physical Review A - Atomic, Molecular, and Optical Physics 86 (3) : -. ScholarBank@NUS Repository.
Abstract: We show that the dipole-dipole interaction between two Rydberg atoms can give rise to long-range molecules. The binding potential arises from two states that converge to different separated-atom asymptotes. These states interact weakly at large distances, but start to repel each other strongly as the van der Waals interaction turns into a resonant dipole-dipole interaction with decreasing separation between the atoms. This mechanism leads to the formation of an attractive well for one of the potentials. If the two separated-atom asymptotes come from the small Stark splitting of an atomic Rydberg level, which lifts the Zeeman degeneracy, the depth of the well and the location of its minimum are controlled by the external electric field. We discuss two different geometries that result in a localized and a donut-shaped potential, respectively. © 2012 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
ISSN: 10502947
DOI: 10.1103/PhysRevA.86.031401
Appears in Collections:Staff Publications

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