Interference of Bose-Einstein condensates split with an atom chip - art. no. 021601

被引:127
作者
Shin, Y
Sanner, C
Jo, GB
Pasquini, TA
Saba, M
Ketterle, W
Pritchard, DE
Vengalattore, M
Prentiss, M
机构
[1] MIT Harvard Ctr Ultracold Atoms, Dept Phys, Elect Res Lab, Cambridge, MA 02139 USA
[2] Harvard Univ, MIT Harvard Ctr Ultracold Atoms, Dept Phys, Cambridge, MA 02138 USA
来源
PHYSICAL REVIEW A | 2005年 / 72卷 / 02期
关键词
D O I
10.1103/PhysRevA.72.021604
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We have used a microfabricated atom chip to split a single Bose-Einstein condensate of sodium atoms into two spatially separated condensates. Dynamical splitting was achieved by deforming the trap along the tightly confining direction into a purely magnetic double-well potential. We observed the matter wave interference pattern formed upon releasing the condensates from the microtraps. The intrinsic features of the quartic potential at the merge point, such as zero trap frequency and extremely high field-sensitivity, caused random variations of the relative phase between the two split condensates. Moreover, the perturbation from the abrupt change of the trapping potential during the splitting was observed to induce vortices.
引用
收藏
页数:4
相关论文
共 25 条
[1]   Guiding neutral atoms on a chip [J].
Dekker, NH ;
Lee, CS ;
Lorent, V ;
Thywissen, JH ;
Smith, SP ;
Drndic, M ;
Westervelt, RM ;
Prentiss, M .
PHYSICAL REVIEW LETTERS, 2000, 84 (06) :1124-1127
[2]   Role of wire imperfections in micromagnetic traps for atoms -: art. no. 042629 [J].
Estève, J ;
Aussibal, C ;
Schumm, T ;
Figl, C ;
Mailly, D ;
Bouchoule, I ;
Westbrook, CI ;
Aspect, A .
PHYSICAL REVIEW A, 2004, 70 (04) :043629-1
[3]   Controlling cold atoms using nanofabricated surfaces:: Atom chips [J].
Folman, R ;
Krüger, P ;
Cassettari, D ;
Hessmo, B ;
Maier, T ;
Schmiedmayer, J .
PHYSICAL REVIEW LETTERS, 2000, 84 (20) :4749-4752
[4]   Surface effects in magnetic microtraps -: art. no. 041604 [J].
Fortágh, J ;
Ott, H ;
Kraft, S ;
Günther, A ;
Zimmermann, C .
PHYSICAL REVIEW A, 2002, 66 (04) :4
[5]   Atom chips:: Fabrication and thermal properties [J].
Groth, S ;
Krüger, P ;
Wildermuth, S ;
Folman, R ;
Fernholz, T ;
Schmiedmayer, J ;
Mahalu, D ;
Bar-Joseph, I .
APPLIED PHYSICS LETTERS, 2004, 85 (14) :2980-2982
[6]   Bose-Einstein condensation on a microelectronic chip [J].
Hänsel, W ;
Hommelhoff, P ;
Hänsch, TW ;
Reichel, J .
NATURE, 2001, 413 (6855) :498-501
[7]   Two-wire waveguide and interferometer for cold atoms [J].
Hinds, EA ;
Vale, CJ ;
Boshier, MG .
PHYSICAL REVIEW LETTERS, 2001, 86 (08) :1462-1465
[8]   Observation of vortex phase singularities in Bose-Einstein condensates -: art. no. 080402 [J].
Inouye, S ;
Gupta, S ;
Rosenband, T ;
Chikkatur, AP ;
Görlitz, A ;
Gustavson, TL ;
Leanhardt, AE ;
Pritchard, DE ;
Ketterle, W .
PHYSICAL REVIEW LETTERS, 2001, 87 (08) :804021-804024
[9]   Phase and phase diffusion of a split Bose-Einstein condensate [J].
Javanainen, J ;
Wilkens, M .
PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4675-4678
[10]   Spin coupling between cold atoms and the thermal fluctuations of a metal surface [J].
Jones, MPA ;
Vale, CJ ;
Sahagun, D ;
Hall, BV ;
Hinds, EA .
PHYSICAL REVIEW LETTERS, 2003, 91 (08)