### Abstract

Language | English |
---|---|

Article number | 012015 |

Journal | Journal of Physics Conference Series |

Volume | 264 |

DOIs | |

Publication status | Published - 1 Jan 2011 |

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### Keywords

- lattice potentials
- quantum degeneracy
- Feshbach resonance
- optical lattice
- optics

### Cite this

*Journal of Physics Conference Series*,

*264*, [012015]. https://doi.org/10.1088/1742-6596/264/1/012015

}

*Journal of Physics Conference Series*, vol. 264, 012015. https://doi.org/10.1088/1742-6596/264/1/012015

**Ultracold and dense samples of ground-state molecules in lattice potentials.** / Nägerl, Hanns-Christoph; Mark, Manfred J; Haller, Elmar; Gustavsson, Mattias; Hart, Russell; Danzl, Johann G.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Ultracold and dense samples of ground-state molecules in lattice potentials

AU - Nägerl, Hanns-Christoph

AU - Mark, Manfred J

AU - Haller, Elmar

AU - Gustavsson, Mattias

AU - Hart, Russell

AU - Danzl, Johann G

PY - 2011/1/1

Y1 - 2011/1/1

N2 - 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.

AB - 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.

KW - lattice potentials

KW - quantum degeneracy

KW - Feshbach resonance

KW - optical lattice

KW - optics

UR - http://stacks.iop.org/1742-6596/264/i=1/a=012015?key=crossref.39ffb55779d6ea741f07b32667718685

U2 - 10.1088/1742-6596/264/1/012015

DO - 10.1088/1742-6596/264/1/012015

M3 - Article

VL - 264

JO - Journal of Physics: Conference Series

T2 - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

M1 - 012015

ER -