Quantum simulation with ultracold atoms in dynamically varying light potentials

动态变化光势下超冷原子的量子模拟

• 批准号: 2748583
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 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=studentship-2748583
• 关键词: Quantum; simulation; ultracold; atoms; dynamically

Ultracold atoms offer unique possibilies as quantum simulators for the study of many-body quantum systems. Our quantum-gas microscope offers single-site and single-atom resolved detection of atoms and opens the path to the study of strongly quantum systems in optical lattices with unprecedented insight into their local properties and with local control of the trapping potential. In particular, we use a digital-mirror device to produce dynamically changeable light potentials in small controllable quantum systems, which are projected onto the atoms in the optical lattice. This allows us create potential barriers on the scale of a single lattice site, which gives access to quantum systems with an exactly controllable atom number. A dynamically varying light potential allows us to change the position of the potential barriers and number of lattice sites available for the atoms. We are also investigating to use these tailor-made light potentials to create novel lattice geometries that feature edge states and flat bands. We will also study the time evolution and many-body quantum dynamics of these edge states, first with a single atomic species, and later with in the presence of tuneable interactions and two-component spin systems using Rb85 atoms with a tuneable scattering length.

Ultracold Atoms提供了独特的可能性，作为多体量子系统研究的量子模拟器。我们的量子气体显微镜提供了原子的单位点和单原子分辨率检测，并为在光学晶格中强烈量子系统的研究开辟了道路，具有对其局部特性的前所未有的洞察力，并且对捕获潜力进行了局部控制。特别是，我们使用数字摩擦设备在小型可控量子系统中产生动态可变的光电位，这些量子系统被投影到光学晶格中的原子上。这使我们可以在单个晶格站点的规模上创建潜在的障碍，该晶格站点可以访问具有完全可控制的原子编号的量子系统。动态变化的光电位使我们能够改变可用于原子的晶格位点的位置和数量。我们还正在研究使用这些量身定制的光电位来创建具有边缘状态和平坦带的新型晶格几何形状。我们还将研究这些边缘状态的时间演化和多体量子动力学，首先是单个原子物种，然后在存在可调的相互作用和使用具有可调散射长度的RB85原子的情况下进行可调的相互作用和两分量自旋系统。