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arXiv · 1511.01403

Two-field optical methods to control magnetic Feshbach resonances

A. Jagannathan·N. Arunkumar·J. A. Joseph·J. E. Thomas
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Abstract

Using an optically-trapped mixture of the two lowest hyperfine states of a $^6$Li Fermi gas, we observe two-field optical tuning of the narrow Feshbach resonance by up to 3 G and an increase in spontaneous lifetime near the broad resonance from $0.5$ ms to $0.4$ s. We present a new model of light-induced loss spectra, employing continuum-dressed basis states, that agrees in shape and magnitude with measurements for both broad and narrow resonances.

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A. Jagannathan, N. Arunkumar, J. A. Joseph, J. E. Thomas. 2015-11-04. Two-field optical methods to control magnetic Feshbach resonances. https://doi.org/10.1103/physrevlett.116.075301

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