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Heteronuclear molecules in an optical dipole trap
J. J. Zirbel, K. -K. Ni, S. Ospelkaus +6
We report on the creation and characterization of heteronuclear KRb Feshbach molecules in an optical dipole trap. Starting from an ultracold gas mixture of K-40 and Rb-87 atoms, we…
Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
E. Wille, F. M. Spiegelhalder, G. Kerner +10
We report on the observation of Feshbach resonances in an ultracold mixture of two fermionic species, 6Li and 40K. The experimental data are interpreted using a simple asymptotic b…
Coherent, adiabatic and dissociation regimes in coupled atomic-molecular Bose-Einstein condensates
Pascal Naidon, Eite Tiesinga, Paul S. Julienne
We discuss the dynamics of a Bose-Einstein condensate of atoms which is suddenly coupled to a condensate of molecules by an optical or magnetic Feshbach resonance. Three limiting r…
Two-color photoassociation spectroscopy of ytterbium atoms and the precise determinations of s-wave scattering lengths
Masaaki Kitagawa, Katsunari Enomoto, Kentaro Kasa +4
By performing high-resolution two-color photoassociation spectroscopy, we have successfully determined the binding energies of several of the last bound states of the homonuclear d…
Two-body transients in coupled atomic-molecular BECs
Pascal Naidon, Eite Tiesinga, Paul S. Julienne
We discuss the dynamics of an atomic Bose-Einstein condensate when pairs of atoms are converted into molecules by single-color photoassociation. Three main regimes are found and it…
Excited Thomas-Efimov levels in ultracold gases
Mark D. Lee, Thorsten Koehler, Paul S. Julienne
Since the early days of quantum physics, the complex behavior of three interacting particles has been the subject of numerous experimental and theoretical studies. In a recent Lett…