A family of atomic-scale color centers, the spin state of which can be controlled via optical and microwave channels, has been found in the rhombic polytype of silicon carbide 21R-SiC considered as a natural superlattice. Zero-phonon lines are observed in photoluminescence corresponding to spin-3/2 centers, which differ in fine structure splitting in the ground and excited states. Giant changes in the photoluminescence intensity under conditions of magnetic resonance and anticrossing of the spin levels of the ground and excited states are demonstrated, which open up possibilities for applications in magnetometry, thermometry, and quantum computing.

中文翻译：

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菱形碳化硅多晶型21R-SiC的色心上的高温自旋操纵

在被认为是天然超晶格的碳化硅21R-SiC的菱形多型体中，发现了一系列原子级色心，其旋转状态可以通过光学和微波通道控制。在与自旋3/2中心相对应的光致发光中观察到零声子线，其在基态和激发态的精细结构分裂方面不同。结果表明，在磁共振，基态自旋能级和激发态反交叉的条件下，光致发光强度发生了巨大变化，这为磁力测定，温度测定和量子计算的应用打开了可能性。