Dynamical response of a Bose-Einstein condensate to a discontinuous change in internal state

被引：256

作者：

Matthews, MR ^{[1
]}

Hall, DS

Jin, DS

Ensher, JR

Wieman, CE

Cornell, EA

Dalfovo, F

Minniti, C

Stringari, S

机构：

[1] Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Natl Inst Stand & Technol, Boulder, CO 80309 USA

[4] Univ Trent, Dipartimento Fis, I-38050 Trent, Italy

[5] Ist Nazl Fis Mat, I-38050 Trent, Italy

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.81.243

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A two-photon transition is used to convert an arbitrary fraction of the Rb-87 atoms in a \F = 1, m(f) = -1] condensate to the \F = 2, m(f) = 1] state. Transferring the entire population imposes a discontinuous change on the condensate's mean-field repulsion, which leaves a residual ringing in the condensate width. A calculation based on Gross-Pitaevskii theory agrees well with the observed behavior, and from the comparison we obtain the ratio of the intraspecies scattering lengths for the two states, a(\1,)-(1)]/a(\2,1)] = 1.062(12). [S0031-9007(98)06574-0].

引用

页码：243 / 247

页数：5

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