Efficient creation of molecules from a cesium Bose-Einstein condensate

Abstract

We report a new scheme to create weakly bound Cs${}_2$ molecules from an atomic Bose-Einstein condensate. The method is based on switching the magnetic field to a narrow Feshbach resonance and yields a high atom-molecule conversion efficiency of more than 30%, a factor of three higher than obtained with conventional magnetic-field ramps. The Cs${}_2$ molecules are created in a single $g$-wave rotational quantum state. The observed dependence of the conversion efficiency on the magnetic field and atom density shows scattering processes beyond two-body coupling to occur in the vicinity of the Feshbach resonance.

7 pages, 4 figures, submitted to Europhysics Letters

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Cited by in corpus (31)

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• Observation of Feshbach-like resonances in collisions between ultracold molecules
• Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field
• Spectroscopy of Ultracold, Trapped Cesium Feshbach Molecules
• `Stückelberg interferometry' with ultracold molecules
• Molecular spectroscopy for ground-state transfer of ultracold RbCs molecules
• Superfluidity and phase transitions in a resonant Bose gas
• Enhancement of variation of fundamental constants in ultracold atom and molecule systems near Feshbach resonances
• Ultracold molecules from ultracold atoms: a case study with the KRb molecule
• Feshbach spectroscopy and scattering properties of ultracold Li+Na mixtures
• A new quantum gas apparatus for ultracold mixtures of K and Cs and KCs ground-state molecules
• Atom-molecule Rabi oscillations in a Mott insulator
• Collisional decay of 87Rb Feshbach molecules at 1005.8 G
• Feshbach resonances, molecular bound states and prospects of ultracold molecule formation in mixtures of ultracold K and Cs
• Dissociation of Feshbach Molecules into Different Partial Waves
• Precision molecular spectroscopy for ground state transfer of molecular quantum gases
• Formation of molecules from a Cs Bose-Einstein condensate
• Collisions of Ultracold Trapped Cesium Feshbach Molecules
• Classification of zero-energy resonances by dissociation of Feshbach molecules
• Three-State Feshbach Resonances Mediated By Second-Order Couplings
• Enhancing molecular conversion efficiency by a magnetic field pulse sequence
• Correlation diagrams in collisions of three identical particles
• Stability and Dynamics of Atom-Molecule Superfluids Near a Narrow Feshbach Resonance
• Confinement controlled dissociation of a molecular Bose-Einstein condensate
• Quenched Magneto-association of Ultracold Feshbach Molecules
• Investigation of 3D-Quantized Ring Vortices in Rotating Coupled Atom-Molecular BEC
• Repeated output coupling of ultracold Feshbach molecules from a Cs BEC
• Optimal conversion of Bose condensed atoms into molecules via a Feshbach resonance