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.

超冷原子为多体量子系统的研究提供了独特的量子模拟器。我们的量子气体显微镜提供了单原子和单原子分辨的原子检测，并开辟了研究光学晶格中强量子系统的道路，对它们的局部性质具有前所未有的洞察力，并对捕获势进行局部控制。特别地，我们使用数字镜装置在小的可控量子系统中产生动态可变的光势，这些光势被投射到光晶格中的原子上。这使我们能够在单个晶格位置的尺度上创建势垒，从而可以访问具有精确可控原子数的量子系统。一个动态变化的光势允许我们改变势垒的位置和原子可用的晶格位置的数量。我们还在研究使用这些定制的光势来创建具有边缘状态和平坦带的新颖晶格几何结构。我们还将研究这些边缘态的时间演化和多体量子动力学，首先是单个原子物种，然后是使用具有可调散射长度的Rb 85原子的可调相互作用和双组分自旋系统。