Formation of multilayered nanostructures of NV sites in single-crystal CVD diamond

The results of growing multilayered nitrogen-doped nanostructures that have the form of periodically arranged nanometer-thick nitrogen-containing layers in a single-crystal CVD diamond are presented. The possibility of creating nitrogen-doped diamond layers with extremely sharp boundaries (less than 1 nm) is demonstrated. The photoluminescence study have shown that multilayered structures make it possible to obtain a higher radiation intensity of practically important NV$^-$ sites at a spin coherence time close to that for uniformly doped layers with the same concentration of nitrogen.