Coherent forward scattering in two-dimensional disordered systems

被引:22
|
作者
Ghosh, S. [1 ,2 ,3 ]
Cherroret, N. [2 ]
Gremaud, B. [1 ,3 ,4 ]
Miniatura, C. [1 ,3 ,4 ,5 ]
Delande, D. [2 ]
机构
[1] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore
[2] Univ Paris 06, Coll France, Ecole Normale Super, Lab Kastler Brossel,CNRS, F-75005 Paris, France
[3] CNRS UNS NUS NTU Int Joint Res Unit, UMI 3654, Merlion MajuLab, Singapore, Singapore
[4] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
[5] Univ Nice Sophia Antipolis, CNRS, INLN, F-06560 Valbonne, France
来源
PHYSICAL REVIEW A | 2014年 / 90卷 / 06期
基金
新加坡国家研究基金会;
关键词
ANDERSON LOCALIZATION; WEAK-LOCALIZATION; MATTER-WAVES; BACKSCATTERING; TRANSPORT; CONDUCTIVITY; STATISTICS;
D O I
10.1103/PhysRevA.90.063602
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a detailed numerical and theoretical analysis of the recently discovered phenomenon of coherent forward scattering. This effect manifests itself as a macroscopic interference peak in the forward direction of the momentum distribution of a matter wave launched with finite velocity in a random potential. Focusing on the two-dimensional case, we show that coherent forward scattering generally arises due the confinement of the wave in a finite region of space, and explain under which conditions it can be seen as a genuine signature of Anderson localization.
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页数:12
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