Probing Fermionic Condensates by Fast-Sweep Projection onto Feshbach Molecules

被引：10

作者：

Matyjaskiewicz, S. ^{[1
,2
]}

Szymanska, M. H. ^{[3
,4
]}

Goral, K. ^{[5
]}

机构：

[1] Kings Coll London, Dept Phys, London WC2R 2LS, England

[2] Warsaw Univ Life Sci, Dept Appl Math, PL-02776 Warsaw, Poland

[3] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[5] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.101.150410

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fast-sweep projection onto Feshbach molecules has been widely used as a probe of fermionic condensates. By determining the exact dynamics of a pair of atoms in time-varying magnetic fields, we calculate the number of condensed and noncondensed molecules created after fast magnetic field sweeps from the BCS to the Bose-Einstein condensate side of the resonances in K-40 and Li-6, for different sweep rates and a range of initial and final fields. We discuss the relation between the initial fermionic condensate fraction and the molecular condensate fraction measured after the sweep.

引用

页数：4