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

doi:10.1088/1674-1056/20/10/103401

中国物理B ›› 2011, Vol. 20 ›› Issue (10): 103401-103401.doi: 10.1088/1674-1056/20/10/103401

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

王鹏军, 付正坤, 柴世杰, 张靖

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

收稿日期:2011-03-16 修回日期:2011-04-11 出版日期:2011-10-15 发布日期:2011-10-15
基金资助:
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).

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

Received:2011-03-16 Revised:2011-04-11 Online:2011-10-15 Published:2011-10-15
Supported by:
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).

摘要/Abstract

摘要： We report the experimental preparations of the absolute ground states of ⁸⁷Rb and ⁴⁰K atoms (| F=1, m_F=1,〉+ |F=9/2, m_F=-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.

关键词: adiabatic rapid passages, homonuclear Feshbach resonance, heteronuclear Feshbach resonances

Abstract: We report the experimental preparations of the absolute ground states of ⁸⁷Rb and ⁴⁰K atoms (|F=1, m_F=1,〉+ |F=9/2, m_F=-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.

Key words: adiabatic rapid passages, homonuclear Feshbach resonance, heteronuclear Feshbach resonances

中图分类号: (Interatomic potentials and forces)

34.20.Cf

03.75.Ss (Degenerate Fermi gases)

王鹏军, 付正坤, 柴世杰, 张靖. Feshbach resonances in an ultracold mixture of ⁸⁷Rb and ⁴⁰K[J]. 中国物理B, 2011, 20(10): 103401-103401.

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[J]. Chin. Phys. B, 2011, 20(10): 103401-103401.

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

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

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