Experimental measurement of efficiency and transport coherence of a cold-atom Brownian motor in optical lattices

被引：8
作者：
Zelan, M. [1 ]
Hagman, H. [1 ]
Labaigt, G. [1 ]
Jonsell, S. [2 ]
Dion, C. M. [1 ]
机构：
[1] Umea Univ, Dept Phys, SE-90187 Umea, Sweden
[2] Stockholm Univ, Dept Phys, SE-10695 Stockholm, Sweden
来源：
PHYSICAL REVIEW E | 2011年 / 83卷 / 02期
基金：
瑞典研究理事会;
关键词：
D O I：
10.1103/PhysRevE.83.020102
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The rectification of noise into directed movement or useful energy is utilized by many different systems. The peculiar nature of the energy source and conceptual differences between such Brownian motor systems makes a characterization of the performance far from straightforward. In this work, where the Brownian motor consists of atoms interacting with dissipative optical lattices, we adopt existing theory and present experimental measurements for both the efficiency and the transport coherence. We achieve up to 0.3% for the efficiency and 0.01 for the Peclet number.
引用
收藏
页数：4
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