论文标题
几何沮丧的哈伯德系统的量子气显微镜
Quantum gas microscopy of a geometrically frustrated Hubbard system
论文作者
论文摘要
几何沮丧的许多粒子量子系统众所周知，很难在数字上研究，但由于其异常特性和新兴现象而引起了深刻的兴趣。在这些系统中，不能同时最大程度地减少能量限制，从而导致较大的地下堕落和各种外来量子相。在这里，我们提出了一个平台，该平台能够对具有三角形几何形状的晶格上的几何沮丧电子系统进行前所未有的详细实验探索。我们证明了三角形原子哈伯德系统的第一个实现，直接在三角形几何形状中直接成像具有单原子和单位分辨率的三角形几何形状，并测量所有最近的邻居允许热量表的抗铁磁性自旋旋转相关性。该平台提供了一种强大的新方法，用于研究外来量子磁力，并直接检测哈伯德系统中的量子自旋液体特征。
Geometrically frustrated many-particle quantum systems are notoriously hard to study numerically but are of profound interest because of their unusual properties and emergent phenomena. In these systems energetic constraints cannot be minimized simultaneously, leading to large ground-state degeneracy and a variety of exotic quantum phases. Here, we present a platform that enables unprecedentedly detailed experimental exploration of geometrically frustrated electronic systems on lattices with triangular geometry. We demonstrate the first realization of triangular atomic Hubbard systems, directly image Mott insulators in the triangular geometry with single-atom and single-site resolution, and measure antiferromagnetic spin-spin correlations for all nearest neighbors allowing for thermometry. This platform provides a powerful new approach for studying exotic quantum magnetism and direct detection of quantum spin liquid signatures in Hubbard systems.
