Dynamics of Bloch matter waves and its breakdown: a Bose-Einstein condensate in a moving 1D optical lattice

被引：0
|
作者：
Fort, C
Catatiotti, FS
Catani, J
De Sarlo, L
Fallani, L
Lye, JE
Modugno, M
Saers, R
Inguscio, M
机构：
[1] LENS, Dipartimento Fis, I-50019 Sesto Fiorentino, FI, Italy
[2] Univ Florence, INFM, I-50019 Sesto Fiorentino, FI, Italy
[3] Univ Catania, Dipartmento Fis, I-95124 Catania, Italy
[4] Univ Trent, BEC, INFM Ctr, I-38050 Trento, Italy
[5] Umea Univ, Dept Phys, S-90187 Umea, Sweden
来源：
LASER PHYSICS | 2005年 / 15卷 / 03期
关键词：
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present the results of experimental work on the dynamics of a Bose-Einstein condensate (BEC) loaded in a 1D moving optical lattice. The system is studied both in the regime of low atomic density (expanding BEC) and high atomic density (trapped BEC). In the low-density regime, the stable dynamics of the system is well-described in terms of Bloch waves. In the presence of nonlinearities, as in a high-density sample, the Bloch waves are not stable solutions of the Gross-Pitaevskii equation (GPE) and dynamical instability takes place.
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页码：447 / 453
页数：7
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