[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
来源:
PHYSICAL REVIEW A
|
2004年
/
70卷
/
03期
关键词:
D O I:
10.1103/PhysRevA.70.031601
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
Ultracold molecules are associated from an atomic Bose-Einstein condensate by ramping a magnetic field across a Feshbach resonance. The reverse ramp dissociates the molecules. The kinetic energy released in the dissociation process is used to measure the widths of four Feshbach resonances in Rb-87. This method to determine the width works remarkably well for narrow resonances even in the presence of significant magnetic-field noise. In addition, a quasimonoenergetic atomic wave is created by jumping the magnetic field across the Feshbach resonance.