Few- to many-body physics with ground state bosonic NaK polar molecules

该项目旨在生产超冷极性分子的高相空间密度样品。为了实现这一点，Na和K原子通过光缔合过程进入分子基态。在该研究单位的第二个项目阶段，我们计划通过采用3D光学晶格来提高分子缔合过程的效率，这将使我们能够产生高相空间密度的分子样品，同时最大限度地减少分子损失过程。此外，我们计划探索光学晶格中极性分子的新型蒸发冷却策略。这种新颖的冷却过程可能被证明是至关重要的，以进一步提高分子量子气体的简并性，从而使它们进入一个制度，在那里，远程相互作用量子气体的多体物理变得容易。探索这种新的量子相及其动力学是该研究单位项目的长期目标之一。

The project aims at producing high phase space density samples of ultracold polar molecules. In order to achieve that, Na and K atoms are brought into the molecular ground state via photoassociation processes. In this second project phase of the research unit, we plan to improve our efficiency of the molecular association process by employing 3D optical lattices, which should allow us to produce high phase space density samples of the molecules while at the same time minimizing molecular loss processes. In addition, we plan to explore novel evaporative cooling strategies of polar molecules in optical lattices. Such novel cooling processes could prove to be crucial to further improve the degeneracy of the molecular quantum gases and thereby bring them into a regime, where many-body physics of long range interacting quantum gases becomes accessible. Exploring such novel quantum phases and their dynamics is one of the long term goals of the project within this research unit.