Deeply bound ultracold molecules in an optical lattice

Abstract

We demonstrate efficient transfer of ultracold molecules into a deeply bound rovibrational level of the singlet ground state potential in the presence of an optical lattice. The overall molecule creation efficiency is 25%, and the transfer efficiency to the rovibrational level |v=73,J=2> is above 80%. We find that the molecules in |v=73,J=2> are trapped in the optical lattice, limited by optical excitation by the lattice light. The molecule trapping time for a lattice depth of 15 atomic recoil energies is about 20 ms. We determine the trapping frequency by the lattice phase and amplitude modulation technique. It will now be possible to transfer the molecules to the rovibrational ground state |v=0,J=0> in the presence of the optical lattice.

12 pages, 4 figures, submitted to the Special Issue of New Journal of Physics on Cold and Ultracold Molecules

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• Tunable Holstein model with cold polar molecules
• Emergent Time Scale in Entangled Quantum Dynamics of Ultracold Molecules in Optical Lattices
• Stimulating the production of deeply bound RbCs molecules with laser pulses: the role of spin-orbit coupling in forming ultracold molecules
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• Optimal trapping wavelengths of Cs${}_2$ molecules in an optical lattice
• Quantum optics and frontiers of physics: The third quantum revolution
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• Few-body physics of ultracold atoms and molecules with long-range interactions
• Lattice-depth measurement using multi-pulse atom diffraction in and beyond the weakly diffracting limit
• Ultracold and dense samples of ground-state molecules in lattice potentials
• Entanglement creation in cold molecular gases using strong laser pulses
• Manipulating multimer propagation using lattice modulation
• Asymptotic behavior of correlation functions of one-dimensional polar-molecules on optical lattices