Ultracold and dense samples of ground-state molecules in lattice potentials

H. Nägerl, M. Mark, E. Haller, M. Gustavsson, R. Hart, J.G. Danzl, Journal of Physics: Conference Series 264 (2011).


Journal Article | Published | English
Author
Nägerl, Hanns; Mark, Manfred; Haller, Elmar; Gustavsson, Mattias; Hart, Russell; Danzl, Johann GIST Austria
Abstract
We produce an ultracold and dense sample of rovibronic ground state Cs 2 molecules close to the regime of quantum degeneracy, in a single hyperfine level, in the presence of an optical lattice. The molecules are individually trapped, in the motional ground state of an optical lattice well, with a lifetime of 8 s. For preparation, we start with a zero-temperature atomic Mott-insulator state with optimized double-site occupancy and efficiently associate weakly-bound dimer molecules on a Feshbach resonance. Despite extremely weak Franck-Condon wavefunction overlap, the molecules are subsequently transferred with >50% efficiency to the rovibronic ground state by a stimulated four-photon process. Our results present a crucial step towards the generation of Bose-Einstein condensates of ground-state molecules and, when suitably generalized to polar heteronuclear molecules such as RbCs, the realization of dipolar many-body quantum-gas phases in periodic potentials.
Publishing Year
Date Published
2011-01-01
Journal Title
Journal of Physics: Conference Series
Acknowledgement
We thank H. Ritsch, N. Bouloufa, O. Dulieu, J. Aldegunde, J. M. Hutson, H. Salami, T. Bergeman, S. D ̈urr, and K. Bergmann for valuable discussions and H. Telle, H. Schnatz, B. Lipphardt, and J. Alnis for sharing technical expertise. We are indebted to R. Grimm for generous support. We gratefully acknowledge funding by the Austrian Ministry of Science and Research (Bundesministerium f ̈ur Wissenschaft und Forschung) and the Austrian Science Fund (Fonds zur F ̈orderung der wissenschaftlichen Forschung) in the form of a START prize grant and by the European Science Foundation within the framework of the EuroQUASAR collective research project QuDeGPM (Project I 153-N16) and within the framework of the EuroQUAM collective research project QuDipMol (Project I 124-N16). R.H. was supported by a Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme
Volume
264
Issue
1
IST-REx-ID

Cite this

Nägerl H, Mark M, Haller E, Gustavsson M, Hart R, Danzl JG. Ultracold and dense samples of ground-state molecules in lattice potentials. Journal of Physics: Conference Series. 2011;264(1). doi:10.1088/1742-6596/264/1/012015
Nägerl, H., Mark, M., Haller, E., Gustavsson, M., Hart, R., & Danzl, J. G. (2011). Ultracold and dense samples of ground-state molecules in lattice potentials. Journal of Physics: Conference Series. IOP Publishing Ltd. https://doi.org/10.1088/1742-6596/264/1/012015
Nägerl, Hanns, Manfred Mark, Elmar Haller, Mattias Gustavsson, Russell Hart, and Johann G Danzl. “Ultracold and Dense Samples of Ground-State Molecules in Lattice Potentials.” Journal of Physics: Conference Series. IOP Publishing Ltd., 2011. https://doi.org/10.1088/1742-6596/264/1/012015.
H. Nägerl, M. Mark, E. Haller, M. Gustavsson, R. Hart, and J. G. Danzl, “Ultracold and dense samples of ground-state molecules in lattice potentials,” Journal of Physics: Conference Series, vol. 264, no. 1. IOP Publishing Ltd., 2011.
Nägerl H, Mark M, Haller E, Gustavsson M, Hart R, Danzl JG. 2011. Ultracold and dense samples of ground-state molecules in lattice potentials. Journal of Physics: Conference Series. 264(1).
Nägerl, Hanns, et al. “Ultracold and Dense Samples of Ground-State Molecules in Lattice Potentials.” Journal of Physics: Conference Series, vol. 264, no. 1, IOP Publishing Ltd., 2011, doi:10.1088/1742-6596/264/1/012015.
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