Quantum gas microscopy with spin, atom-number, and multilayer readout
Quantum gas microscopy with spin, atom-number, and multilayer readout
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具有自旋、原子数和多层读数的量子气体显微镜
DOI：
10.1103/physreva.91.041602
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发表时间：
2015
影响因子：
2.9
通讯作者：
M. Greiner
中科院分区：
文献类型：
--
作者：
P. Preiss;R. Ma;M. Tai;Jonathan Simon;M. Greiner
光学晶格中超冷原子的原子和位分辨实验为强相关材料的模拟提供了一个强大的平台。在这篇文章中，我们提出了一个用于隧道耦合双层简并量子气体的制备、控制和位点分辨检测的工具箱。使用碰撞封锁，我们设计了依赖于职业的平面间传输，使我们能够在成像过程中规避光辅助对损失，并计数每个位点n=0到n=3个原子。我们获得了莫特绝缘体“婚礼蛋糕”结构的第一个数字分辨率和位置分辨率图像，并观察了磁量子相变中反铁磁有序的出现。我们进一步能够使用双层系统的自旋分辨读出两个超精细态的混合物。这项工作为直接探测纠缠和kosterlitz - thoulless型相动力学以及耦合平面量子材料的研究打开了大门。
Atom- and site-resolved experiments with ultracold atoms in optical lattices provide a powerful platform for the simulation of strongly correlated materials. In this letter, we present a toolbox for the preparation, control and site-resolved detection of a tunnel-coupled bilayer degenerate quantum gas. Using a collisional blockade, we engineer occupation-dependent inter-plane transport which enables us to circumvent light-assisted pair loss during imaging and count n=0 to n=3 atoms per site. We obtain the first number- and site-resolved images of the Mott insulator "wedding cake" structure and observe the emergence of antiferromagnetic ordering across a magnetic quantum phase transition. We are further able to employ the bilayer system for spin-resolved readout of a mixture of two hyperfine states. This work opens the door to direct detection of entanglement and Kosterlitz-Thouless-type phase dynamics, as well as studies of coupled planar quantum materials.