title: State-dependent energy shifts of Rydberg atoms in a ponderomotive optical lattice.
abstract: We demonstrate the state dependence of the ponderomotive energy shift of Rydberg atoms in an optical lattice using microwave spectroscopy. Unique to Rydberg atoms, this dependence results from a state-dependent aspect ratio between Rydberg-atom size and lattice period. A semiclassical simulation reproduces all features observed in the microwave spectra and indicates the presence of trapped Rydberg atoms.
authors.affiliation: FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA. kyounge@umich.edu
authors.forename: K C
authors.initials: KC
authors.lastname: Younge
authors.forename: B
authors.initials: B
authors.lastname: Knuffman
authors.forename: S E
authors.initials: SE
authors.lastname: Anderson
authors.forename: G
authors.initials: G
authors.lastname: Raithel