Experimental realization of two-dimensional single-layer ultracold gases of ^(87)Rb in an accordion lattice  

作　　者：Liangwei Wang Kai Wen Fangde Liu Yunda Li Pengjun Wang Lianghui Huang Liangchao Chen Wei Han Zengming Meng Jing Zhang 王良伟;文凯;刘方德;李云达;王鹏军;黄良辉;陈良超;韩伟;孟增明;张靖(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-electronics,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-electronics,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Chinese Physics B》2022年第10期247-252,共6页中国物理B（英文版）

基　　金：Project supported by the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0302003);the National Key Research and Development Program of China (Grant Nos. 2016YFA0301602, 2018YFA0307601, and 2021YFA1401700);the National Natural Science Foundation of China (Grant Nos. 12034011, 92065108, 11974224, 12022406, and 12004229);the Natural Science Basic Research Plan of Shaanxi Province, China (Grant No. 2019JQ058);the Fund for Shanxi “1331 Project” Key Subjects Construction。

摘　　要：We experimentally realize two-dimensional(2D) single-layer ultracold gases of ^(87)Rb by dynamically tuning the periodicity of a standing wave, known as accordion lattice. In order to load ^(87)Rb Bose-Einstein condensate into single dark fringe node of the blue detuning optical lattice, we reduce the lattice periodicity from 26.7 μm to 3.5 μm with the help of an acousto-optic deflector(AOD) to compress the three-dimensional BEC adiabatically into a flat and uniform quasi-2D single-layer. We describe the experimental procedure of the atoms loading into the accordion lattice in detail and present the characteristics of the quasi-2D ultracold gases. This setup provides an important platform for studying in-and out-of equilibrium physics, phase transition and 2D topological matter.

关 键 词：two-dimensional ultracold gases accordion lattice anisotropy 

分 类 号：O469[理学—凝聚态物理]