Systematic study of Optical Feshbach Resonances in an ideal gas

2011/04/30 by S. Blatt, T. L. Nicholson, B. J. Bloom +4 · 1 citation
Physics and Astronomy · #physics.atom-ph #cond-mat.quant-gas #physics.gen-ph

paper · pdf · doi:10.1103/physrevlett.107.073202

published as Physical Review Letters 107, 073202 (2011) · Significant changes to text and figure presentation to improve clarity. Extended supplementary material. 4 pages, 4 figures; includes supplementary material 8 pages, 4 figures. Submitted to Physical Review Letters

arxiv created 2011/06/06 · arxiv updated 2011/08/15

Abstract

Using a narrow intercombination line in alkaline earth atoms to mitigate large inelastic losses, we explore the Optical Feshbach Resonance (OFR) effect in an ultracold gas of bosonic ⁸⁸Sr. A systematic measurement of three resonances allows precise determinations of the OFR strength and scaling law, in agreement with coupled-channels theory. Resonant enhancement of the complex scattering length leads to thermalization mediated by elastic and inelastic collisions in an otherwise ideal gas. OFR could be used to control atomic interactions with high spatial and temporal resolution.

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