Germanium-Vacancy Single Color Centers in Diamond.
Germanium-Vacancy Single Color Centers in Diamond.
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DOI：
10.1038/srep12882
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发表时间：
2015-08-07
影响因子：
4.6
通讯作者：
Hatano M
中科院分区：
文献类型：
--
作者：
Iwasaki T;Ishibashi F;Miyamoto Y;Doi Y;Kobayashi S;Miyazaki T;Tahara K;Jahnke KD;Rogers LJ;Naydenov B;Jelezko F;Yamasaki S;Nagamachi S;Inubushi T;Mizuochi N;Hatano M
金刚石中原子大小的荧光缺陷被广泛认为是量子密码学和量子信息处理的一个很有前途的固态平台。对于这些应用，需要具有高强度和可重复性的单光子源。在本研究中，我们报道了金刚石中一种新的色心，它由锗(Ge)和空位(V)组成，命名为GeV色心，它在室温下具有尖锐而强烈的光致发光带，在602 nm处有一条零声子线。我们演示了这种新的色心作为单光子源工作。离子注入和化学气相沉积技术都能在钻石中制造GeV中心。第一性原理计算揭示了GeV中心的原子晶体结构和能级。
Atomic-sized fluorescent defects in diamond are widely recognized as a promising solid state platform for quantum cryptography and quantum information processing. For these applications, single photon sources with a high intensity and reproducible fabrication methods are required. In this study, we report a novel color center in diamond, composed of a germanium (Ge) and a vacancy (V) and named the GeV center, which has a sharp and strong photoluminescence band with a zero-phonon line at 602 nm at room temperature. We demonstrate this new color center works as a single photon source. Both ion implantation and chemical vapor deposition techniques enabled fabrication of GeV centers in diamond. A first-principles calculation revealed the atomic crystal structure and energy levels of the GeV center.