Two-field optical methods to control magnetic Feshbach resonances
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.
- Pub Date:
- November 2015
- Condensed Matter - Quantum Gases;
- Physics - Atomic Physics;
- Quantum Physics
- 9 pages, 7 figures