Inducing Transport in a Dissipation-Free Lattice with Super Bloch Oscillations

被引：137

作者：

Haller, Elmar ^{[1
]}

Hart, Russell

Mark, Manfred J.

Danzl, Johann G.

Reichsoellner, Lukas

Naegerl, Hanns-Christoph

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 20期

基金：

奥地利科学基金会;

关键词：

SEMICONDUCTOR SUPERLATTICE; ATOMS; DYNAMICS;

D O I：

10.1103/PhysRevLett.104.200403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Particles in a perfect lattice potential perform Bloch oscillations when subject to a constant force, leading to localization and preventing conductivity. For a weakly interacting Bose-Einstein condensate of Cs atoms, we observe giant center-of-mass oscillations in position space with a displacement across hundreds of lattice sites when we add a periodic modulation to the force near the Bloch frequency. We study the dependence of these "super" Bloch oscillations on lattice depth, modulation amplitude, and modulation frequency and show that they provide a means to induce linear transport in a dissipation-free lattice.

引用

页数：4

共 29 条

[1] Engineering the quantum transport of atomic wavefunctions over macroscopic distances [J].

Alberti, A. ;

Ivanov, V. V. ;

Tino, G. M. ;

Ferrari, G. .

NATURE PHYSICS, 2009, 5 (08) :547-550

[2] Macroscopic quantum interference from atomic tunnel arrays [J].

Anderson, BP ;

Kasevich, MA .

SCIENCE, 1998, 282 (5394) :1686-1689

[3]

Ashcroft N., 2011, Solid State Physics

[4] Bloch oscillations of ultracold atoms:: A tool for a metrological determination of h/mRb -: art. no. 253001 [J].

Battesti, R ;

Cladé, P ;

Guellati-Khélifa, S ;

Schwob, C ;

Grémaud, B ;

Nez, F ;

Julien, L ;

Biraben, F .

PHYSICAL REVIEW LETTERS, 2004, 92 (25) :253001-1

[5] 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

[6]

Bloch F., 1929, Z PHYS, V52, P555, DOI DOI 10.1007/BF01339455

[7] Optics and interferometry with atoms and molecules [J].

Cronin, Alexander D. ;

Schmiedmayer, Joerg ;

Pritchard, David E. .

REVIEWS OF MODERN PHYSICS, 2009, 81 (03) :1051-1129

[8] Analog of photon-assisted tunneling in a Bose-Einstein condensate [J].

Eckardt, A ;

Jinasundera, T ;

Weiss, C ;

Holthaus, M .

PHYSICAL REVIEW LETTERS, 2005, 95 (20)

[9] Atom interferometry with a weakly interacting Bose-Einstein condensate [J].

Fattori, M. ;

D'Errico, C. ;

Roati, G. ;

Zaccanti, M. ;

Jona-Lasinio, M. ;

Modugno, M. ;

Inguscio, M. ;

Modugno, G. .

PHYSICAL REVIEW LETTERS, 2008, 100 (08)

[10] OPTICAL INVESTIGATION OF BLOCH OSCILLATIONS IN A SEMICONDUCTOR SUPERLATTICE [J].

FELDMANN, J ;

LEO, K ;

SHAH, J ;

MILLER, DAB ;

CUNNINGHAM, JE ;

MEIER, T ;

VONPLESSEN, G ;

SCHULZE, A ;

THOMAS, P ;

SCHMITTRINK, S .

PHYSICAL REVIEW B, 1992, 46 (11) :7252-7255

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