摘要
We report the experimental preparations of the absolute ground states of 87Rb and 40K atoms （｜F = 1, mF = 1 ） ＋ ｜F = 9/2, rnF ： -9/2）） by means of the radio-frequency and microwave adiabatic rapid passages, and the observation of magnetic Feshbach resonances in an ultracold mixture of bosonic STRb and fermionic 40K atoms between 0 T and 6.0 × 10^-2 T, including 7 homonuclear and 4 heteronuclear Feshbach resonances. The resonances are identified by the abrupt trap loss of atoms induced by the strong inelastic three-body collisions. These Feshbach resonances should enable the experimental control of interspecies interactions.
We report the experimental preparations of the absolute ground states of 87Rb and 40K atoms （｜F = 1, mF = 1 ） ＋ ｜F = 9/2, rnF ： -9/2）） by means of the radio-frequency and microwave adiabatic rapid passages, and the observation of magnetic Feshbach resonances in an ultracold mixture of bosonic STRb and fermionic 40K atoms between 0 T and 6.0 × 10^-2 T, including 7 homonuclear and 4 heteronuclear Feshbach resonances. The resonances are identified by the abrupt trap loss of atoms induced by the strong inelastic three-body collisions. These Feshbach resonances should enable the experimental control of interspecies interactions.
基金
supported by the National Natural Science Foundation for Distinguished Young Scholars of China (Grant No. 10725416)
the National Basic Research Program of China (Grant No. 2006CB921101)
the National Natural Science Foundation of China for Excellent Research Team, China (Grant No. 60821004)
