Two-field optical methods to control magnetic Feshbach resonances
arXiv:1511.01403 · doi:10.1103/PhysRevLett.116.075301
Abstract
Using an optically-trapped mixture of the two lowest hyperfine states of a 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 ms to 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.
arXiv comment9 pages, 7 figures
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