论文标题
电子自旋谐振光谱与女性耐体检测体积
Electron Spin Resonance spectroscopy with femtoliter detection volume
论文作者
论文摘要
我们报告使用超导$ LC $平面微谐振器和Josephson参数放大器的硅温度下的供体的电子自旋共振测量。谐振器包括一个纳米线电感器，定义了女权体检测量。由于底物的应变，供体共振线被大大拓宽。观察到单旋至光子耦合强度最多可达$ \ sim 3〜 \ text {kHz} $。单拍的灵敏度为$ 120 \ pm 24〜 $ spins/hahn Echo，对应于$ \ of 12 \ pm 3 $〜旋转$/\ sqrt {\ text {hz}} $，用于重复审判。
We report electron spin resonance measurements of donors in silicon at millikelvin temperatures using a superconducting $LC$ planar micro-resonator and a Josephson Parametric Amplifier. The resonator includes a nanowire inductor, defining a femtoliter detection volume. Due to strain in the substrate, the donor resonance lines are heavily broadened. Single-spin to photon coupling strengths up to $\sim 3~\text{kHz}$ are observed. The single shot sensitivity is $120 \pm 24~$spins/Hahn echo, corresponding to $\approx 12 \pm 3$~spins$/\sqrt{\text{Hz}}$ for repeated acquisition.
