Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field

Details Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field

2005-05-23

arxiv.org/abs/cond-mat/0505567v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.190404

A novel atom-molecule conversion technique has been investigated. Ultracold 85Rb atoms sitting in a DC magnetic field near the 155G Feshbach resonance are associated by applying a small sinusoidal oscillation to the magnetic field. There is resonant atom to molecule conversion when the modulation frequency closely matches the molecular binding energy. We observe that the atom to molecule conversion efficiency depends strongly on the frequency, amplitude, and duration of the applied modulation and on the initial phase space density of the sample. This technique offers high conversion efficiencies without the necessity of crossing or closely approaching the Feshbach resonance and allows precise spectroscopic measurements.

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