论文标题
2d-3d跨界的$^6 $ li原子的退化费米气体可控生产
Controllable Production of Degenerate Fermi Gases of $^6$Li Atoms in the 2D-3D Crossover
论文作者
论文摘要
维度跨界方案中的多体物理学在冷原子实验中引起了很多关注，但尚未系统地探索。实验中存在的技术困难之一是缺乏定量调整不同晶格带原子占用比的实验技术。在这封信中，我们在将3D费米气体转移到1D光学晶格的过程中报告了这种技术，其中通过分别改变光学偶极陷阱（ODT）和晶格的捕获势来调整能量带的占用的能力。我们可以通过数量从Unity到50美元的最低频段，将费米气体调整为最低频段的费米气体。这提供了一种实验研究多体相互作用对费米气体尺寸的依赖性的途径。
The many-body physics in the dimensional crossover regime attracts much attention in cold atom experiments, but yet to explore systematically. One of the technical difficulties existed in the experiments is the lack of the experimental technique to quantitatively tune the atom occupation ratio of the different lattice bands. In this letter, we report such techniques in a process of transferring a 3D Fermi gas into a 1D optical lattice, where the capability of tuning the occupation of the energy band is realized by varying the trapping potentials of the optical dipole trap (ODT) and the lattice, respectively. We could tune a Fermi gas with the occupation in the lowest band from unity to 50$\%$ quantitatively. This provides a route to experimentally study the dependence of many-body interaction on the dimensionality in a Fermi gas.
