自旋轨道耦合玻色凝聚体的拓扑量子态和量子动力学性质

项目名称： 自旋轨道耦合玻色凝聚体的拓扑量子态和量子动力学性质

项目编号： No.11475144

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 文灵华

作者单位： 燕山大学

项目金额： 84万元

中文摘要： 自旋轨道耦合对于许多凝聚态物理现象而言是至关重要的。近年来冷原子气体中自旋轨道耦合的实验实现为研究自旋轨道耦合的量子多体物理提供了一个崭新和理想的平台。本项目拟研究旋转的自旋轨道耦合玻色－爱因斯坦凝聚体（BECs）中拓扑缺陷的形成与结构、自旋轨道耦合BECs中的量子湍流与自旋湍流、周期性受激驱动的自旋轨道耦合BECs的量子动力学（包括动力学局域化、量子共振等现象）。探讨自旋轨道耦合、旋转和耗散等因素与凝聚体中的拓扑缺陷、自旋结构和动力学之间的规律性关系，揭示含有自旋轨道耦合的可压缩超流体中的量子湍流与自旋湍流中的新现象和新效应，阐明受激的自旋轨道耦合BECs中的动力学局域化、量子共振、量子拍频和量子混沌等现象的形成条件与特征，为相关实验提供理论依据和参考，促进人们对非阿贝尔规范势下超冷原子气体物理特性的新的认识。

中文关键词： 超冷原子气体；自旋轨道耦合；涡旋；量子湍流；受激转子

英文摘要： Spin-orbit coupling(SOC) plays a crucial role for many condensed matter phenomena.The cold atomic gases with SOC realized experimentally in recent years have provided a new and ideal platform for studying SOC physics of quantum many-body systems.In this project, we investigate the formation and structure of topological defects in rotating SOC Bose-Einstein condensates (BECs),quantum turbulence and spin turbulence in SOC BECs, and quantum dynamics of periodically kicked SOC BECs (including dynamical localization,quantum resonance, quantum beating and quantum chaos). We explore the relation between the factors of SOC,rotation and dissipation and the properties of topological defects,spin structure and dynamics in SOC BECs. In addition, the new phenomena and effects in the quantum turbulence and spin turbulence in SOC compressible superfluids will be revealed. Moreover, we elucidate the formation conditions and characteristics of dynamic localization and quantum resonance in kiced SOC BECs. These studies aim to provide theoretical basis and reference for the furture possible experiments, and facilitate new understanding of the properties of ultra-cold atomic gases subject to non-Abelian gauge potentials.

英文关键词： ultracold atomic gases;spin-orbit coupling;vortex;quantum turbulence;kicked rotor