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Department of Chemistry

Publication details for Prof. Jeremy M. Hutson

Köppinger, M.P., McCarron, D.J., Jenkin, D.L., Molony, P.K., Cho, H.W., Cornish, S.L., Le Sueur, C.R., Blackley, C.L. & Hutson, J.M. (2014). Production of optically trapped 87RbCs Feshbach molecules. Physical Review A: atomic, molecular and optical physics 89(3): 033604.

Author(s) from Durham

Abstract

We report the production of Feshbach molecules in a crossed-beam dipole trap. A mixture of and is cooled close to quantum degeneracy before an interspecies Feshbach resonance at 197 G is used to associate up to molecules with a temperature of nK. The molecules are confined in the dipole trap with a lifetime of 0.21(1) s, long enough for future experiments exploring optical transfer to the absolute ground state. We have measured the magnetic moment of the Feshbach molecules in a magnetic bias field range between 181 and 185 G to demonstrate the ability to control the character of the molecular state. In addition, we have performed Feshbach spectroscopy in a field range from 0 to 1200 G and located three previously unobserved resonances at high magnetic fields.