论文标题
通过参数频率转换在膜谐振器中的旋转检测
Spin detection via parametric frequency conversion in a membrane resonator
论文作者
论文摘要
超级纳米力学谐振器的最新演示介绍了用于固态传感应用的新协议的前景。在这里，我们建议在SI $ _3 $ n $ _4 $膜上使用两个耦合的超级谐振器模式，以检测小型核自旋组合。为此，我们在非排效模式之间采用参数频率转换。耦合的简并谐振器产生的非排定模式，参数转换是在存在磁扫描尖端的情况下由核自旋的周期性反转介导的。我们通过典型的实验参数值分析潜在的噪声源并得出可实现的信噪比。我们的建议将光力学系统的几何约束与扫描力显微镜的要求进行了调解，并带来了一个新的旋转相互作用和旋转成像的平台。
Recent demonstrations of ultracoherent nanomechanical resonators introduce the prospect of new protocols for solid state sensing applications. Here, we propose to use two coupled ultracoherent resonator modes on a Si$_3$N$_4$ membrane for the detection of small nuclear spin ensembles. To this end, we employ parametric frequency conversion between nondegenerate modes. The nondegenerate modes result from coupled degenerate resonators, and the parametric conversion is mediated by periodic inversions of the nuclear spins in the presence of a magnetic scanning tip. We analyze potential noise sources and derive the achievable signal-to-noise ratio with typical experimental parameter values. Our proposal reconciles the geometric constraints of optomechanical systems with the requirements of scanning force microscopy and brings forth a new platform for spin-phonon interaction and spin imaging.
