Single Silicon Vacancy Centers in 10 nm Diamonds for Quantum Information Applications
Single Silicon Vacancy Centers in 10 nm Diamonds for Quantum Information Applications
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DOI：
10.1021/acsanm.9b00580
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发表时间：
2019-08-01
影响因子：
5.9
通讯作者：
Akimov, Alexey V.
中科院分区：
文献类型：
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作者：
Bolshedvorskii, Stepan V.;Zeleneev, Anton I.;Akimov, Alexey V.
超小(约10 nm)、低应变、人工制造的具有内部活性色心的钻石在量子信息处理和生物医学应用方面具有巨大的潜力。因此，能够人工生产这种钻石非常重要。在这里，我们报道了这种纳米金刚石的高压高温合成，它的尺寸约为10 nm，包含一个光学活性的单一硅空位色心。利用特殊的样品制备技术，我们能够在表面制备出含有单个纳米金刚石的样品。通过原子力显微镜图像和共聚焦光学图像的关联，我们验证了在单个纳米晶体中光学活性色心的存在，并利用二阶关联测量，证明了这些纳米钻石的单光子发射统计特性。这些色心具有不闪烁、光谱窄的发射，光谱宽度和零声子线的位置分布窄，从而证明了所制备的纳米金刚石的高质量。
Ultrasmall (about 10 nm), low-strain, artificially produced diamonds with an internal, active color center have substantial potential for quantum information processing and biomedical applications. Thus, it is of great importance to be able to artificially produce such diamonds. Here, we report on the high-pressure, high-temperature synthesis of such nanodiamonds about 10 nm in size and containing an optically active, single silicon-vacancy color center. Using special sample preparation technique, we were able to prepare samples containing single nanodiamonds on the surface. By correlating atomic-force microscope images and confocal optical images, we verified the presence of optically active color centers in single nanocrystals, and using second-order correlation measurements, we proved the single-photon emission statistics of these nanodiamonds. These color centers have nonblinking, spectrally narrow emission with narrow distribution of spectral width and positions of zero-phonon line, thus proving the high quality of the nanodiamonds produced.