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Chin. Phys. B, 2011, Vol. 20(10): 103401    DOI: 10.1088/1674-1056/20/10/103401
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Feshbach resonances in an ultracold mixture of 87Rb and 40K

Wang Peng-Jun(王鹏军), Fu Zheng-Kun(付正坤), Chai Shi-Jie(柴世杰), and Zhang Jing(张靖)
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
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.
Keywords:  adiabatic rapid passages      homonuclear Feshbach resonance      heteronuclear Feshbach resonances  
Received:  16 March 2011      Revised:  11 April 2011      Accepted manuscript online: 
PACS:  34.20.Cf (Interatomic potentials and forces)  
  32.80.Pj  
  03.75.Ss (Degenerate Fermi gases)  
Fund: Project 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).

Cite this article: 

Wang Peng-Jun(王鹏军), Fu Zheng-Kun(付正坤), Chai Shi-Jie(柴世杰), and Zhang Jing(张靖) Feshbach resonances in an ultracold mixture of 87Rb and 40K 2011 Chin. Phys. B 20 103401

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