Feshbach-resonant Raman photoassociation in a Bose-Einstein condensate

被引:6
作者
Mackie, Matt [1 ,2 ]
Phou, Pierre [1 ]
Boyce, Heather [3 ]
Shinn, Mannix [1 ]
Katz, Lev [4 ]
机构
[1] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA
[2] Univ Connecticut, Dept Phys, Storrs, CT 06268 USA
[3] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA
[4] Temple Univ, Dept Biol, Philadelphia, PA 19122 USA
来源
PHYSICAL REVIEW A | 2011年 / 84卷 / 04期
基金
美国国家科学基金会;
关键词
NOBEL LECTURE; MOLECULES; ATOMS; GAS; SUPERCHEMISTRY;
D O I
10.1103/PhysRevA.84.043614
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We model the formation of stable heteronuclear molecules via pulsed Raman photoassociation of a two-component Bose-Einstein condensate near a strong Feshbach resonance, for both counterintuitive and intuitive pulse sequencing. Compared to lasers alone, weak Raman photoassociation is enhanced by as much as a factor of ten (five) for a counterintuitive (intuitive) pulse sequence, whereas strong Raman photoassociation is barely enhanced at all-regardless of pulse sequence. Stronger intra-atom, molecule, or atom-molecule collisions lead to an expected decrease in conversion efficiency, but stronger ambient inter-atom collisions lead to an unexpected increase in the efficiency of stable molecule production. Numerical results agree reasonably with an analytical approximation.
引用
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页数:8
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