用于模拟低维分子结构的量子模拟器
Quantum simulator to emulate lower dimensional molecular structure
AI总结：
本研究构建了基于铯原子定位的固态量子模拟器，通过人工原子搭建不同轨道对称性的低维人工分子结构，可模拟有机分子轨道并实现亚分子精度的相互作用监测。
摘要：
自下而上的量子模拟器已被开发出来，用于量化各类相互作用、维度和结构在形成物质电子态中的作用。本文中，我们展示了一款可模拟分子轨道的固态量子模拟器，其构建仅基于将单个铯原子定位在锑化铟表面。借助扫描隧道显微镜与光谱学技术，结合从头算（ab initio）计算，我们证明可通过图案化铯环产生的局域态构建人工原子。这些人工原子可作为构建单元，实现具有不同轨道对称性的人工分子结构。对应的分子轨道让我们能够模拟与知名有机分子相似的二维结构。该平台还可用于以亚分子精度监测原子结构与由此产生的分子轨道图景之间的相互作用。
英文摘要：
Bottom-up quantum simulators have been developed to quantify the role of various interactions, dimensionality, and structure in creating electronic states of matter. Here, we demonstrated a solid-state quantum simulator emulating molecular orbitals, based solely on positioning individual cesium atoms on an indium antimonide surface. Using scanning tunneling microscopy and spectroscopy, combined with ab initio calculations, we showed that artificial atoms could be made from localized states created from patterned cesium rings. These artificial atoms served as building blocks to realize artificial molecular structures with different orbital symmetries. These corresponding molecular orbitals allowed us to simulate 2D structures reminiscent of well known organic molecules. This platform could further be used to monitor the interplay between atomic structures and the resulting molecular orbital landscape with sub-molecular precision.
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