标题： 作为氮空位色心的纳米天线的金刚石颗粒 显示英文标题

标题： Diamond particles as nanoantennas for nitrogen-vacancy color centers

摘要： 氮化硼（NV）中心在金刚石纳米颗粒中的光致发光与体金刚石中的NV中心相比表现出特定的性质。 例如，已经报告了从一个颗粒到另一个颗粒的寿命和亮度的大波动。 还观察到，对于比平均发光波长小得多的纳米晶体，颗粒尺寸在受激辐射损耗（STED）显微镜中设定了分辨率的下限。 我们表明，通过认识到NV中心对光的吸收和发射是由作为介电纳米天线的金刚石纳米颗粒介导的，可以定量地理解所有这些特性。 显示英文摘要

摘要： The photoluminescence of nitrogen-vacancy (NV) centers in diamond nanoparticles exhibits specific properties as compared to NV centers in bulk diamond. For instance large fluctuations of lifetime and brightness from particle to particle have been reported. It has also been observed that for nanocrystals much smaller than the mean luminescence wavelength, the particle size sets a lower threshold for resolution in Stimulated Emission Depletion (STED) microscopy. We show that all these features can be quantitatively understood by realizing that the absorption-emission of light by the NV center is mediated by the diamond nanoparticle which behaves as a dielectric nanoantenna.