Feshbach resonances in an ultracold mixture of 87Rb and 40K |
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| Authors: | Wang Peng-Jun Fu Zheng-Kun Chai Shi-Jie and Zhang Jing |
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| Institution: | State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China |
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| Abstract: | We report the experimental preparations of the absolute ground states of 87Rb and 40K atoms (| F=1, mF=1,〉+ |F=9/2, mF=-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 87Rb 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. |
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| Keywords: | adiabatic rapid passages homonuclear Feshbach resonance heteronuclear Feshbach resonances |
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