Beyond effective Hamiltonians: Micromotion of Bose-Einstein condensates in periodically driven optical lattices

被引：10

作者：

Arnal, M. ^{[1
,2
]}

Chatelain, G. ^{[1
,2
]}

Cabrera-Gutierrez, C. ^{[1
,2
]}

Fortun, A. ^{[1
,2
]}

Michon, E. ^{[1
,2
]}

Billy, J. ^{[1
,2
]}

Schlagheck, P. ^{[3
]}

Guery-Odelin, D. ^{[1
,2
]}

机构：

[1] Univ Toulouse, Ups, Lab Collis Agregats React, IRSAMC, F-31062 Toulouse, France

[2] CNRS, UMR 5589, F-31062 Toulouse, France

[3] Univ Liege, CESAM Res Unit, B-4000 Liege, Belgium

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 01期

关键词：

QUANTUM; DYNAMICS;

D O I：

10.1103/PhysRevA.101.013619

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate by statistical means a Bose-Einstein condensate held in a one-dimensional optical lattice whose phase undergoes a fast oscillation. The averaged potential experienced by the atoms yields a periodic potential having the same spatial period but with a renormalized depth. However, the atomic dynamics also contains a micromotion whose main features are revealed by a Kolmorogov-Smirnov analysis of the experimental momentum distributions. Furthermore, we discuss the impact of the micromotion on a quench process corresponding to a proper sudden change of the driving amplitude which reverses the curvature of the averaged potential.

引用

页数：6

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