论文标题
单个$^{167} er^{3+} $ ion的zeeman和超细互动
The Zeeman and hyperfine interactions of a single $^{167}Er^{3+}$ ion in Si
论文作者
论文摘要
由于其电信波长光学跃迁及其与Si纳米型技术的兼容性，因此掺杂的SI是量子信息应用的有前途的候选者。基于光致发光激发的最新光谱研究表明，在Si中占据了多个定义明确的晶格位点。在这里，我们报告了Si中单个167er3+离子的Zeeman和超细张量的第一个测量。所有获得的张量都是高度各向异性的，最大的值主轴在几乎相同的方向上对齐，最低晶体场水平G量的痕迹为17.78 $ \ pm $ 0.40。结果表明，该特定的ER位点可能是表现出单斜晶（C1）对称性的扭曲的立方位点。最后，为此站点确定了零一阶（Zefoz）字段，可用于在将来的实验中降低超细旋转状态的破坏。
Er-doped Si is a promising candidate for quantum information applications due to its telecom wavelength optical transition and its compatibility with Si nanofabrication technologies. Recent spectroscopic studies based on photoluminescence excitation have shown multiple well-defined lattice sites that Er occupies in Si. Here we report the first measurement of the Zeeman and hyperfine tensors of a single 167Er3+ ion in Si. All the obtained tensors are highly anisotropic with the largest value principal axes aligning in nearly the same direction, and the trace of the lowest crystal field level g-tensor is 17.78$\pm$0.40. The results indicate that this specific Er site is likely to be a distorted cubic site that exhibits monoclinic (C1) symmetry. Finally, zero first-order-Zeeman (ZEFOZ) fields are identified for this site and could be used to reduce decoherence of hyperfine spin states in future experiments.
