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

共 15 条

[1]

Birell N. D., 1982, QUANTUM FIELDS CURVE

[2]

BLAKIE PB, CONDMAT0108480

[3]

Bogolyubov N. N., 1947, J. Phys. (USSR), V11, P23

[4] How to measure the Bogoliubov quasiparticle amplitudes in a trapped condensate [J].

Brunello, A ;

Dalfovo, F ;

Pitaevskii, L ;

Stringari, S .

PHYSICAL REVIEW LETTERS, 2000, 85 (21) :4422-4425

[5] Suppression and enhancement of impurity scattering in a Bose-Einstein condensate [J].

Chikkatur, AP ;

Görlitz, A ;

Stamper-Kurn, DM ;

Inouye, S ;

Gupta, S ;

Ketterle, W .

PHYSICAL REVIEW LETTERS, 2000, 85 (03) :483-486

[6]

EINSTEIN A, 1925, ACAD WISS BER, V3, P18

[7] A well-collimated quasi-continuous atom laser [J].

Hagley, EW ;

Deng, L ;

Kozuma, M ;

Wen, J ;

Helmerson, K ;

Rolston, SL ;

Phillips, WD .

SCIENCE, 1999, 283 (5408) :1706-1709

[8]

Huang K., 1987, STAT MECH

[9] Superradiant Rayleigh scattering from a Bose-Einstein condensate [J].

Inouye, S ;

Chikkatur, AP ;

Stamper-Kurn, DM ;

Stenger, J ;

Pritchard, DE ;

Ketterle, W .

SCIENCE, 1999, 285 (5427) :571-574

[10] Observation of Feshbach resonances in a Bose-Einstein condensate [J].

Inouye, S ;

Andrews, MR ;

Stenger, J ;

Miesner, HJ ;

Stamper-Kurn, DM ;

Ketterle, W .

NATURE, 1998, 392 (6672) :151-154

← 1 2 →