Ratchet effect for cold atoms in an optical lattice

被引：88

作者：

Lundh, E ^{[1
]}

Wallin, M ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.94.110603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The possibility of realizing a directed current for a quantum particle in a flashing asymmetric potential is investigated. It is found that quantum resonances, where the value of the effective Planck constant is equal to an integer or half-integer multiple of pi, give rise to a directed current. The effect should be readily observable in experiments.

引用

页数：4

共 18 条

[1] Thermodynamics and kinetics of a Brownian motor [J].

Astumian, RD .

SCIENCE, 1997, 276 (5314) :917-922

[2] Early time diffusion for the quantum kicked rotor with narrow initial momentum distributions [J].

Daley, AJ ;

Parkins, AS .

PHYSICAL REVIEW E, 2002, 66 (05) :8-056210

[3]

Duffy GJ, 2004, PHYS REV E, V70, DOI 10.1103/PhysRevE.70.056206

[4]

HUR G, PHYSICS0407100

[5] QUANTUM RESONANCE FOR A ROTATOR IN A NON-LINEAR PERIODIC FIELD [J].

IZRAILEV, FM ;

SHEPELYANSKII, DL .

THEORETICAL AND MATHEMATICAL PHYSICS, 1980, 43 (03) :553-561

[6]

JONES PH, QUANTPH0309149

[7] Molecular wires acting as coherent quantum ratchets -: art. no. 228305 [J].

Lehmann, J ;

Kohler, S ;

Hänggi, P ;

Nitzan, A .

PHYSICAL REVIEW LETTERS, 2002, 88 (22) :228305/1-228305/4

[8] Experimental tunneling ratchets [J].

Linke, H ;

Humphrey, TE ;

Löfgren, A ;

Sushkov, AO ;

Newbury, R ;

Taylor, RP ;

Omling, P .

SCIENCE, 1999, 286 (5448) :2314-2317

[9]

LUNDH E, IN PRESS

[10] Ratchet for cold rubidium atoms: The asymmetric optical lattice [J].

Mennerat-Robilliard, C ;

Lucas, D ;

Guibal, S ;

Tabosa, J ;

Jurczak, C ;

Courtois, JY ;

Grynberg, G .

PHYSICAL REVIEW LETTERS, 1999, 82 (04) :851-854

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