论文标题
合成氧化石化的Rydberg激子（Cu $ _2 $ o）
Rydberg Excitons in Synthetic Cuprous Oxide (Cu$_2$O)
论文作者
论文摘要
莫特·瓦尼尔（Mott-Wannier）激子的高上林堡州正在引起极大的兴趣，因为有可能向激子 - 波利顿（Exciton-Polaritons）物理学增加长距离相互作用。在这里，我们研究了通过光浮游区技术生长的块状合成氧化物的Rydberg激发，并将结果与天然样品进行比较。 X射线表征证实了这两种材料主要是单晶，而中红外的传输光谱显示，合成物质和天然材料之间几乎没有差异。合成样品显示的主量子数最高$ n = 10 $，显示了其他吸收线，以及增强的空间扩展和空间不均匀性。室温和低温光致发光测量结果表明，合成材料中的铜空缺过多。这些测量值为在合成晶体中实现\ Mbox {高 - $ n $}激子提供了途径，开辟了通往可伸缩量子设备的途径。
High-lying Rydberg states of Mott-Wannier excitons are receiving considerable interest due to the possibility of adding long-range interactions to the physics of exciton-polaritons. Here, we study Rydberg excitation in bulk synthetic cuprous oxide grown by the optical float zone technique and compare the result with natural samples. X-ray characterization confirms both materials are mostly single crystal, and mid-infrared transmission spectroscopy revealed little difference between synthetic and natural material. The synthetic samples show principal quantum numbers up to $n=10$, exhibit additional absorption lines, plus enhanced spatial broadening and spatial inhomogeneity. Room temperature and cryogenic photoluminescence measurements reveal a significant excess of copper vacancies in the synthetic material. These measurements provide a route towards achieving \mbox{high-$n$} excitons in synthetic crystals, opening a route to scalable quantum devices.
