A Quantum Gas Microscope for the Kagome lattice

Kagome 晶格的量子气体显微镜

• 批准号: EP/X032795/1
• 负责人: Ulrich Schneider
• 金额: $ 219.47万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX032795%2F1
• 关键词: Quantum; Gas; Microscope; Kagome; lattice

We propose to develop novel microscopy technique for optical lattices, and to build the first Quantum Gas Microscope for the Kagome lattice in order to study the rich physics of frustration, flat bands, and novel strongly-correlated states.During the last twenty years, ultracold atoms in optical lattices have emerged as clean and versatile model systems to study the many-body physics of interacting particles in periodic potentials. In particular, Quantum Gas Microscopes enable the observation and manipulation of lattice gases with single-site resolution.Strong geometric frustration can prevent ordering and give rise to extensive degeneracies that enable novel strongly correlated phenomena. The paradigmatic example is the Kagome lattice, where destructive interferences between hopping paths give rise to a perfectly flat band and non-trivial spin liquid states.In this project, we will employ Mott insulators and negative temperature states as gateways into the flat band and explore the complex phase diagrams and non-equilibrium dynamics of bosons, fermions, and bose-fermi mixtures in the Kagome lattice.We will develop a novel microscopy technique based on e.g. the sequential imaging of sublattices. This technique can be directly adapted to many other bichromatic superlattices, providing access to crucial local quantities including local densities, spin textures, density fluctuations, and spin correlations with single-site resolution.

我们建议开发用于光学晶格的新型显微镜技术，并为Kagome晶格建造第一个量子气体显微镜，以研究越来越多的挫败感，平坦带和新颖的强烈相关状态的物理。光学晶格中的原子已成为清洁且通用的模型系统，以研究周期性潜力中相互作用颗粒的多体物理学。尤其是，量子气显微镜可以通过单位分辨率观察和操纵晶格气体。施加的几何挫败感可以防止订购并引起广泛的退化，从而使新颖的现象强烈相关。范式的例子是kagome晶格，在该项目之间，跳跃路径之间的破坏性干扰产生了一个完美的频带和非平凡的自旋液态。在这个项目中，我们将使用Mott绝缘子和负温度状态作为进入平面带的网关并探索的电源。 Kagome Lattice中玻色子，费米子和玻色纤维混合物的复杂相图和非平衡动力学。我们将开发一种基于E.G.的新型显微镜技术。 Sublattices的顺序成像。该技术可以直接适应许多其他双重晶格，从而提供了对局部数量的访问，包括局部密度，自旋纹理，密度波动以及单点分辨率的自旋相关性。