Experimental observation of the Bogoliubov transformation for a Bose-Einstein condensed gas

被引：98

作者：

Vogels, JM ^{[1
]}

Xu, K

Raman, C

Abo-Shaeer, JR

Ketterle, W

机构：

[1] MIT, Dept Phys, MIT Harvard Ctr Ultracold Atoms, Cambridge, MA 02139 USA

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.88.060402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Phonons with wave vector q/(h) over bar were optically imprinted into a Bose-Einstein condensate. Their momentum distribution was analyzed using Bragg spectroscopy with a high momentum transfer. The wave function of the phonons was shown to be a superposition of +q and -q free particle momentum states, in agreement with the Bogoliubov quasiparticle picture.

引用

页码：060402/1 / 060402/4

页数：4

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