Signatures of inter-band transitions on dynamical localization

被引：1

作者：

Medhet, Sara ^{[1
]}

Yamakoshi, Tomotake ^{[2
]}

Ayub, Muhammad ^{[1
]}

Saif, Farhan ^{[1
]}

Watanabe, Shinichi ^{[3
]}

机构：

[1] Quaid I Azam Univ, Dept Elect, Islamabad 45320, Pakistan

[2] Univ Electrocommun, Inst Laser Sci, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan

[3] Univ Electrocommun, Dept Engn Sci, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan

来源：

EUROPEAN PHYSICAL JOURNAL D | 2020年 / 74卷 / 08期

关键词：

QUANTUM RECURRENCES; CHAOS; STATES;

D O I：

10.1140/epjd/e2020-100489-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We explain the dynamics of ultracold atoms in amplitude modulated optical lattice with harmonic confinement. We show the existence of dynamical localization that manifests itself as the cold atoms exhibit quantum suppression of classical chaos in the dynamical system. The exponential localization takes place both in momentum as well as in coordinate space within certain windows on modulation amplitude. We show that inter-band transitions, taking place due to the amplitude modulation in optical lattice, play an important role in controlling the dynamical localization of matter waves. Our obtained results can be generalized to other dynamical systems and are experimentally realizable as we consider the values of parameters from the present-day available experiments.

引用

页数：7

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