Multiple intrinsically identical single-photon emitters in the solid state
Multiple intrinsically identical single-photon emitters in the solid state
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DOI：
10.1038/ncomms5739
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发表时间：
2014-08-01
影响因子：
16.6
通讯作者：
Jelezko, F.
中科院分区：
文献类型：
--
作者：
Rogers, L. J.;Jahnke, K. D.;Jelezko, F.
难以区分的单光子发射器对不断发展的量子技术领域至关重要。为了实现量子光学技术的可扩展性和提高其复杂性，需要多个独立且相同的单光子发射器。然而，典型的固态单光子源本质上是不同的，需要使用电反馈或光学腔来改善不同发射器之间的光谱重叠。在这里，我们展示了低应变块状金刚石中明亮的硅空位（SiV-）中心，它们显示出高达91%的光谱重叠和接近变换限制的激发线宽。这是固体中不同的单光子发射体首次显示出本质上相同的光谱特性。我们的研究结果对单光子源在量子光学和密码学中的应用有一定的影响。
Emitters of indistinguishable single photons are crucial for the growing field of quantum technologies. To realize scalability and increase the complexity of quantum optics technologies, multiple independent yet identical single-photon emitters are required. However, typical solid-state single-photon sources are inherently dissimilar, necessitating the use of electrical feedback or optical cavities to improve spectral overlap between distinct emitters. Here we demonstrate bright silicon vacancy (SiV-) centres in low-strain bulk diamond, which show spectral overlap of up to 91% and nearly transform-limited excitation linewidths. This is the first time that distinct single-photon emitters in the solid state have shown intrinsically identical spectral properties. Our results have impact on the application of single-photon sources for quantum optics and cryptography.