A Quantum Gas Microscope for Ultracold Molecules

超冷极性分子为量子科学实验提供了一个令人兴奋的新平台，特别是与光学晶格中的量子多体物理研究相关。这个博士项目将使用最先进的技术在光学晶格中产生超分子。从双简并原子混合物出发，将原子装入三维光学晶格。通过控制原子相互作用和相对晶格深度，将产生双莫特绝缘体，其中每个晶格位置中存在每个物种的一个原子。这是使用种间Feshbach共振上的磁缔合和到振转基态的双光子光学转移的组合来创建分子的完美起点。然后，该项目将侧重于研究分子间长程偶极-偶极相互作用引起的多体现象。该领域的一个关键挑战是解决和检测光学晶格中的单个分子。为此，我们将开发一种量子气体显微镜，其中使用高数值孔径透镜来成像光学晶格中的各个位置。这将为量子磁性和物质的新相提供新的见解。

Ultracold polar molecules offer an exciting new platform for quantum science experiments, particularly relevant for studies of quantum many-body physics in optical lattices. This PhD project will use of a state-of-the-art techniques to produce ultracol molecules in an optical lattice. Starting from a doubly degenerate atomic mixture, atoms will be loaded into a three dimensional optical lattice. By controlling the atomic interactions and relative lattice depths, a double Mott-insulator will be created in which there is one atom of each species in each lattice site. This is the perfect starting point for the creation of molecules using a combination of magnetoassociation on an interspecies Feshbach resonance and two-photon optical transfer to the rovibrational ground state. The project will then focus on the investigation of many-body phenomena that result from the long-range dipole-dipole interactions between molecules. A key challenge for the field is to address and detect individual molecules in the optical lattice. For this we will develop a quantum gas microscope in which a high numerical aperture lens is used to image individual sites in the optical lattice. This will deliver new insights into quantum magnetism and novel phases of matter.