光晶格中向列相超流体重凝聚动力学特性研究

Ultracold atoms in optical lattices have become an important tool for quantum simulation, which can be used to study complex quantum processes and explore novel quantum states. Based on the technique of preparing the Potts-nematic superfluidity in two-dimensional honeycomb composite optical lattice, this project aims at further developing the quantum control techniques over high orbital degrees of freedom in optical super-lattices, realizing the nematic superfluid in three-dimensional lattice system, and studying the dynamic characteristics and production conditions of recondensation process..Through this project, we will construct a three-dimensional honeycomb optical lattice, including a two-dimensional honeycomb composite lattice and a one-dimensional standing wave lattice, to achieve the preparation of a non-equilibrium state by using the population swapping method. Then with the help of a multi-dimensional detection system, we will study the recondensation process of nematic superfluid under different conditions and dimensions..This is expected to improve the life of the nematic superfluidity in the experiment, reveal the physical mechanism of nematic order in quantum materials, provide experimental accumulation and theoretical basis for finding novel quantum states formed by orbital effect in non-equilibrium states.

光晶格中超冷原子系统已经成为量子模拟的重要工具，可用于研究复杂的量子过程以及探索新奇量子物态。本项目在二维蜂窝状复合光晶格中制备“波茨-向列相”超流体的基础上，进一步发展在复杂点群对称性光晶格中的高轨道调控技术，实现三维晶格系统中的向列相超流体，并研究重凝聚过程的动力学特性和产生条件。项目拟通过构建三维蜂窝状光晶格，包括二维交错阱深的蜂窝晶格和一维驻波束缚晶格，利用布居数翻转技术实现对非平衡态的制备，并结合多维度吸收成像探测技术，完成对不同条件、不同维度向列相超流体重凝聚过程的研究。从而有助于在实验中进一步提升向列相超流体寿命，揭示量子材料中产生向列序的物理机制，并为在非平衡态中寻找由轨道效应形成的新奇量子态提供实验积累与理论基础。

光晶格中超冷原子系统已经成为量子模拟的重要工具，可用于研究复杂的量子过程以及探索新奇量子物态。本项目在二维蜂窝状复合光晶格中制备“波茨-向列相”超流体的基础上，进一步发展在复杂点群对称性光晶格中的高轨道调控技术，实现三维晶格系统中的向列相超流体，建立了高度可控的三维复合蜂窝状光晶格实验平台，并发展了研究光晶格中高轨道反常量子特性的新手段，实现了对光晶格高轨道的有效操控和其动力学特性的研究，为在非平衡态中寻找由轨道效应形成的新奇量子态提供实验积累与理论基础。

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