It remains a great challenge to realize direct manipulation of a nitrogen-vacancy (NV) spin at the single-quantum level with a microwave (MW) cavity. As an alternative, a hybrid system with the spin–phonon–photon triple interactions mediated by a squeezed cantilever-type harmonic resonator is proposed. According to the general mechanical parametric amplification of this in-between phonon mode, the direct spin–phonon and photon–phonon couplings are both exponentially enhanced, which can even further improve the coherent manipulation of a single NV spin and MW photon with a higher efficiency. In view of this triple system with enhanced couplings and the additional sideband adjustable designs, this scheme may provide a more efficient phonon-mediated platform to bridge or manipulate the MW quantum and a single electron spin coherently. It is also hoped to evoke wider applications in the areas of quantum state transfer and preparation, ultrasensitive detection and quantum nondestructive measurement, etc.

使用微波（MW）腔在单量子水平上直接操纵氮空位（NV）自旋仍然是一个巨大的挑战。作为替代方案，提出了一种混合系统，该系统具有由挤压悬臂梁型谐波谐振器介导的自旋-声子-光子三重相互作用。根据这种中间声子模式的一般机械参数放大，直接自旋 - 声子和光子 - 声子耦合都呈指数增强，这甚至可以以更高的效率进一步改善单个 NV 自旋和 MW 光子的相干操纵. 鉴于这种具有增强耦合和附加边带可调设计的三重系统，该方案可以提供更有效的声子介导平台，以相干地桥接或操纵 MW 量子和单电子自旋。