Quantum-gas microscopy of large-scale bosonic quantum gases

在这个项目中，我们将探索大规模玻色子量子气体的非平衡动力学，使用显微控制和检测相结合。我们将讨论三个广泛的领域，即多体局域系统在一个和两个空间维度，自旋输运在大规模海森堡模型和约束动力学耦合到远程相互作用里德堡态的晶格气体。对于多体局域系统，我们将探索适合我们的量子气体显微镜的优势的新型探针。我们将通过有限尺寸标度研究二维MBL对热包裹体的稳定性和一维MBL的性质。作为对定域系统的补充，我们将研究清洁二分量玻色-哈伯德模型中初始非平衡态的弛豫。我们的实验旨在探索最近观察到的超扩散自旋输运的稳定性，可积性破坏扰动，以及阐明的作用，自旋弛豫的初始状态。利用高激发态的里德伯态，我们的目标是实现一个横场伊辛模型。我们将使用我们的微观控制来准备特定的初始状态，由于动力学约束防止它们衰变，这些初始状态的寿命特别长。触及研究单位的三个中心目标，我们计划与所有理论项目密切合作。

In this project, we will explore the out-of-equilibrium dynamics of large-scale bosonic quantum gases using a combination of microscopic control and detection. We will address three broad areas, namely many-body localized systems in one and two spatial dimensions, spin transport in large-scale Heisenberg models and constrained dynamics in lattice gases coupled to long-range interacting Rydberg states. For many-body localized systems, we will explore novel probes tailored to the strengths of our quantum gas microscope. We will study the stability of MBL in two dimensions to the presence of thermal inclusions and the nature of one-dimensional MBL via finite-size scaling. Complementary to localized systems, we will study the relaxation of initial out-of-equilibrium states in the clean two-component Bose-Hubbard model. Our experiments aim to explore the stability of recently observed superdiffusive spin transport to integrability-breaking perturbations, as well as shed light on the role of the initial state on the spin relaxation. Using highly excited Rydberg states, we aim to realize a transverse field Ising model. We will use our microscopic control to prepare specific initial states, which are particularly long lived due to dynamical constraints preventing their decay. Touching on the three central objectives of the research unit, we plan to closely collaborate with all theoretical projects.