Damped Bloch oscillations of Bose-Einstein condensates in disordered potential gradients

被引：20

作者：

Drenkelforth, S. ^{[1
]}

Buening, G. Kleine ^{[1
]}

Will, J. ^{[1
]}

Schulte, T. ^{[1
]}

Murray, N. ^{[1
]}

Ertmer, W. ^{[1
]}

Santos, L. ^{[2
]}

Arlt, J. J. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany

[2] Leibniz Univ Hannover, Inst Theoret Astrophys, D-30167 Hannover, Germany

来源：

NEW JOURNAL OF PHYSICS | 2008年 / 10卷

关键词：

D O I：

10.1088/1367-2630/10/4/045027

中图分类号：

O4 [物理学];

学科分类号：

0702 [物理学];

摘要：

We investigate both experimentally and theoretically disorder-induced damping of Bloch oscillations of Bose-Einstein condensates in optical lattices. The spatially inhomogeneous force responsible for the damping is realized by a combination of a disordered optical and a magnetic gradient potential. We show that the inhomogeneity of this force results in a broadening of the quasimomentum spectrum, which in turn causes damping of the centre-of-mass oscillation. We quantitatively compare the obtained damping rates to the simulations using the Gross-Pitaevskii equation. Our results are relevant for high precision experiments on very small forces, which require the observation of a large number of oscillation cycles.

引用

页数：13

共 41 条

[1]

Bloch oscillations of atoms in an optical potential [J].

BenDahan, M ;

Peik, E ;

Reichel, J ;

Castin, Y ;

Salomon, C .

PHYSICAL REVIEW LETTERS, 1996, 76 (24) :4508-4511

[2]

About the Quantum mechanics of Electrons in Crystal lattices. [J].

Bloch, Felix .

ZEITSCHRIFT FUR PHYSIK, 1929, 52 (7-8) :555-600

[3]

Second-order correlation function of a phase fluctuating Bose-Einstein condensate [J].

Cacciapuoti, L ;

Hellweg, D ;

Kottke, M ;

Schulte, T ;

Ertmer, W ;

Arlt, JJ ;

Sengstock, K ;

Santos, L ;

Lewenstein, M .

PHYSICAL REVIEW A, 2003, 68 (05) :10

[4]

Sensitive measurement of forces at the micron scale using bloch oscillations of ultracold atoms [J].

Carusotto, I ;

Pitaevskii, L ;

Stringari, S ;

Modugno, G ;

Inguscio, M .

PHYSICAL REVIEW LETTERS, 2005, 95 (09)

[5]

Phase coherence and superfluid-insulator transition in a disordered Bose-Einstein condensate [J].

Chen, Yong P. ;

Hitchcock, J. ;

Dries, D. ;

Junker, M. ;

Welford, C. ;

Hulet, R. G. .

PHYSICAL REVIEW A, 2008, 77 (03)

[6]

Determination of the fine structure constant based on Bloch oscillations of ultracold atoms in a vertical optical lattice -: art. no. 033001 [J].

Cladé, P ;

de Mirandes, E ;

Cadoret, M ;

Guellati-Khélifa, S ;

Schwob, C ;

Nez, F ;

Julien, L ;

Biraben, F .

PHYSICAL REVIEW LETTERS, 2006, 96 (03)

[7]

Suppression of transport of an interacting elongated Bose-Einstein condensate in a random potential -: art. no. 170409 [J].

Clément, D ;

Varón, AF ;

Hugbart, M ;

Retter, JA ;

Bouyer, P ;

Sanchez-Palencia, L ;

Gangardt, DM ;

Shlyapnikov, GV ;

Aspect, A .

PHYSICAL REVIEW LETTERS, 2005, 95 (17)

[8]

Instabilities of a Bose-Einstein condensate in a periodic potential: an experimental investigation [J].

Cristiani, M ;

Morsch, O ;

Malossi, N ;

Jona-Lasinio, M ;

Anderlini, M ;

Courtade, E ;

Arimondo, E .

OPTICS EXPRESS, 2004, 12 (01) :4-10

[9]

Experimental properties of Bose-Einstein condensates in one-dimensional optical lattices: Bloch oscillations, Landau-Zener tunneling, and mean-field effects [J].

Cristiani, M. ;

Morsch, O. ;

Müller, J.H. ;

Ciampini, D. ;

Arimondo, E. .

Physical Review A - Atomic, Molecular, and Optical Physics, 2002, 65 (6 A) :636121-636121

[10]

Atomic Bose and Anderson glasses in optical lattices [J].

Damski, B ;

Zakrzewski, J ;

Santos, L ;

Zoller, P ;

Lewenstein, M .

PHYSICAL REVIEW LETTERS, 2003, 91 (08) :804031-804034

← 1 2 3 4 5 →