表面离子阱热变形引起的电场噪声的变化
Changes in electric-field noise due to thermal transformation of a surface ion trap
摘要：
我们的目标是阐明金属表面的微观特性如何映射到其电场噪声特性。在我们的系统中，金属薄膜的长时间热处理可以引起该薄膜表面产生的电场噪声的幅度上升。我们把这种热引起的噪声幅度上升称为热变换。通过一系列的加热，铣削，和电子处理上进行一个单一的表面离子阱的热转换过程中探索的基本物理。在这些处理之间，$^{40}$ Ca $^+$离子被捕获在金属表面上方70 $μ$ m处作为检测器，以监测频率接近1 MHz的电场噪声。俄歇光谱仪用于跟踪污染金属表面成分的变化。有了这些工具，我们调查污染物沉积，化学反应，和原子重组作为可能的驱动程序的热转换。
英文摘要：
We aim to illuminate how the microscopic properties of a metal surface map to its electric-field noise characteristics. In our system, prolonged heat treatments of a metal film can induce a rise in the magnitude of the electric-field noise generated by the surface of that film. We refer to this heat-induced rise in noise magnitude as a thermal transformation. The underlying physics of this thermal transformation process is explored through a series of heating, milling, and electron treatments performed on a single surface ion trap. Between these treatments, $^{40}$Ca$^+$ ions trapped 70~$μ$m above the surface of the metal are used as detectors to monitor the electric-field noise at frequencies close to 1~MHz. An Auger spectrometer is used to track changes in the composition of the contaminated metal surface. With these tools we investigate contaminant deposition, chemical reactions, and atomic restructuring as possible drivers of thermal transformations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
