Colloquium: Atomic quantum gases in periodically driven optical lattices
Colloquium: Atomic quantum gases in periodically driven optical lattices
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DOI：
10.1103/revmodphys.89.011004
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发表时间：
2017-03-31
影响因子：
44.1
通讯作者：
Eckardt, Andre
中科院分区：
文献类型：
--
作者：
Eckardt, Andre
相干辐射形式的时间周期强迫是对单个原子等小型量子系统进行相干操纵的标准工具。在过去的几年里，周期性驾驶越来越多地被认为是多体系统相干控制的一种手段。特别是，在较低千赫兹范围内进行周期性驱动的光学晶格中的超冷量子气体实验引起了广泛关注。里程碑包括动态局域化的观察、玻色超流体和莫特绝缘体之间量子相变的动态控制，以及强人工磁场和拓扑能带结构的动态创建。本次研讨会回顾了这些最近的实验及其理论描述。此外，在 Floquet 理论框架内讨论了周期性驱动的多体系统的基本特性，包括加热、松弛动力学、异常拓扑边缘状态以及对缓慢参数变化的响应。
Time-periodic forcing in the form of coherent radiation is a standard tool for the coherent manipulation of small quantum systems like single atoms. In the last years, periodic driving has more and more also been considered as a means for the coherent control of many-body systems. In particular, experiments with ultracold quantum gases in optical lattices subjected to periodic driving in the lower kilohertz regime have attracted much attention. Milestones include the observation of dynamic localization, the dynamic control of the quantum phase transition between a bosonic superfluid and a Mott insulator, as well as the dynamic creation of strong artificial magnetic fields and topological band structures. This Colloquium reviews these recent experiments and their theoretical description. Moreover, fundamental properties of periodically driven many-body systems are discussed within the framework of Floquet theory, including heating, relaxation dynamics, anomalous topological edge states, and the response to slow parameter variations.