Two-Level Ultrabright Single Photon Emission from Diamond Nanocrystals
Two-Level Ultrabright Single Photon Emission from Diamond Nanocrystals
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DOI：
10.1021/nl9014167
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发表时间：
2009-09-01
期刊：
影响因子：
10.8
通讯作者：
Prawer, Steven
中科院分区：
文献类型：
--
作者：
Aharonovich, Igor;Castelletto, Stefania;Prawer, Steven
报道了室温下稳定的超亮单光子源的制备。该发射器基于在蓝宝石衬底上通过化学气相沉积方法生长的金刚石纳米晶体内的色心，并在饱和时显示出两级电子行为，最大测量计数率为3.2 x 10(6)次/秒。发射中心在756 nm附近，半峰全宽度在11 nm附近，激发态寿命为3.7 ns。这些独特的特性使其成为量子光子学和通信应用以及细胞生物标记的主要候选者。
The fabrication of stable ultrabright single photon sources operating at room temperature Is reported. The emitter is based on a color center within a diamond nanocrystal grown on a sapphire substrate by chemical vapor deposition method and exhibits a two-level electronic behavior with a maximum measured count rate of 3.2 x 10(6) counts/s at saturation. The emission is centered at similar to 756 nm with a full width at half-maximum similar to 11 nm and an excited state lifetime of 3.7 ns. These unique properties make it a leading candidate for quantum photonics and communication applications as well as for cellular biomarking.