Axion remains the most convincing solution to the strong-CP problem and a well-motivated dark matter candidate, causing the search for axions and axion-like particles(ALPs) to attract attention continually. The exchange of such particles may cause anomalous spin-dependent forces, inspiring many laboratory ALP searching experiments based on the detection of macroscopic monopole-dipole interactions between polarized electrons/nucleons and unpolarized nucleons. Since there is no exact proof of the existence of these interactions, to detect them is still of great significance. In the present paper, we study the electron-neucleon monopole-dipole interaction with a new method, in which a hybrid spin-nanocantilever optomechanical system consisting of a nitrogen-vacancy(NV) center and a nanocantilever resonator is used. With a static magnetic field and a pump microwave beam and a probe microwave beam applied, a probe absorption spectrum could be obtained. Through specific peaks appearing in the spectrum, we can identify this monopole-dipole interaction. And we also provide a prospective constraint to constrain the interaction. Furthermore, because our method can also be applied to the detection of some other spin-dependent interactions, this work provides new ideas for the experimental searches of the anomalous spin-dependent interactions.

中文翻译：

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基于探针吸收光谱中出现的尖峰的轴介导力的超灵敏光机械检测

轴子仍然是强CP问题的最有说服力的解决方案和动机良好的暗物质候选者，导致对轴子和类轴子粒子（ALPs）的搜索不断引起人们的关注。这种粒子的交换可能会导致异常的自旋相关力，激发了许多基于检测极化电子/核子和非极化核子之间宏观单极-偶极相互作用的实验室 ALP 搜索实验。由于没有确切证据证明这些相互作用的存在，因此检测它们仍然具有重要意义。在本文中，我们用一种新方法研究了电子-核子单极-偶极子相互作用，其中使用了由氮空位 (NV) 中心和纳米悬臂谐振器组成的混合自旋-纳米悬臂光机械系统。通过施加静磁场和泵浦微波束和探针微波束，可以获得探针吸收光谱。通过光谱中出现的特定峰，我们可以识别这种单极-偶极相互作用。我们还提供了一个前瞻性约束来约束交互。此外，由于我们的方法也可以应用于其他一些自旋相关相互作用的检测，这项工作为异常自旋相关相互作用的实验搜索提供了新的思路。