Reversible loss of superfluidity of a Bose-Einstein condensate in a 1D optical lattice

被引：16

作者：

Sapiro, R. E. ^{[1
]}

Zhang, R.

Raithel, G.

机构：

[1] Univ Michigan, FOCUS Ctr, Ann Arbor, MI 48109 USA

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

关键词：

ULTRACOLD ATOMS; MOTT INSULATOR; LIGHT; DIFFRACTION; TRANSITION; WAVE;

D O I：

10.1088/1367-2630/11/1/013013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply a one-dimensional (1D) optical lattice, formed by two laser beams with a wavelength of 852 nm, to a 3D (87)Rb Bose-Einstein condensate (BEC) in a shallow magnetic trap. We use Kapitza-Dirac scattering to determine the depth of the optical lattice. A qualitative change in behavior of the BEC is observed at a lattice depth of 30E(rec), where the quantum gas undergoes a reversible transition from a superfluid state to a state that lacks well-to-well phase coherence. Our observations are consistent with a 1D Mott insulator transition, but could also be explained by mean-field effects.

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页数：10

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共 28 条

[1] Bose-Einstein condensation of atomic gases [J].

Anglin, JR ;

Ketterle, W .

NATURE, 2002, 416 (6877) :211-218

[2] REFLECTION OF ELECTRONS BY STANDING LIGHT WAVES - EXPERIMENTAL STUDY [J].

BARTELL, LS ;

ROSKOS, RR ;

THOMPSON, HB .

PHYSICAL REVIEW, 1968, 166 (05) :1494-&

[3] Exploring the phase space of the quantum δ-kicked accelerator [J].

Behinaein, G. ;

Ramareddy, V. ;

Ahmadi, P. ;

Summy, G. S. .

PHYSICAL REVIEW LETTERS, 2006, 97 (24)

[4] Criterion for bosonic superfluidity in an optical lattice [J].

Diener, Roberto B. ;

Zhou, Qi ;

Zhai, Hui ;

Ho, Tin-Lun .

PHYSICAL REVIEW LETTERS, 2007, 98 (18)

[5] CO2-laser optical lattice with cold rubidium atoms [J].

Friebel, S ;

D'Andrea, C ;

Walz, J ;

Weitz, M ;

Hansch, TW .

PHYSICAL REVIEW A, 1998, 57 (01) :R20-R23

[6] Adiabatic loading of a Bose-Einstein condensate in a 3D optical lattice [J].

Gericke, T. ;

Gerbier, F. ;

Widera, A. ;

Foelling, S. ;

Mandel, O. ;

Bloch, I. .

JOURNAL OF MODERN OPTICS, 2007, 54 (05) :735-743

[7] Quantum phases of dipolar bosons in optical lattices -: art. no. 170406 [J].

Góral, K ;

Santos, L ;

Lewenstein, M .

PHYSICAL REVIEW LETTERS, 2002, 88 (17) :4

[8] DIFFRACTION OF ATOMS BY LIGHT - THE NEAR-RESONANT KAPITZA-DIRAC EFFECT [J].

GOULD, PL ;

RUFF, GA ;

PRITCHARD, DE .

PHYSICAL REVIEW LETTERS, 1986, 56 (08) :827-830

[9] Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms [J].

Greiner, M ;

Mandel, O ;

Esslinger, T ;

Hänsch, TW ;

Bloch, I .

NATURE, 2002, 415 (6867) :39-44

[10] Interference of an array of independent Bose-Einstein condensates [J].

Hadzibabic, Z ;

Stock, S ;

Battelier, B ;

Bretin, V ;

Dalibard, J .

PHYSICAL REVIEW LETTERS, 2004, 93 (18) :180403-1