An integrated diamond nanophotonics platform for quantum-optical networks
An integrated diamond nanophotonics platform for quantum-optical networks
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DOI：
10.1126/science.aah6875
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发表时间：
2016-11-18
期刊：
影响因子：
56.9
通讯作者：
Lukin, M. D.
中科院分区：
文献类型：
--
作者：
Sipahigil, A.;Evans, R. E.;Lukin, M. D.
光子和量子发射器之间的有效接口构成了量子网络的基础，并在单光子水平上启用光学非线性。我们展示了一个基于硅胶囊（SIV）的颜色中心与钻石纳米电视的颜色中心的集成平台。通过将SIV中心放置在钻石光子晶体腔内，我们实现了一个由单个颜色中心控制的量子光开关。我们使用SIV亚稳态状态控制开关，并观察单个光子级的光学开关。拉曼过渡用于实现具有可调频率和带宽的单光子源。通过测量发射到单个波导中的不可区分的拉曼光子的强度相关性，我们观察到由两个纠缠SIV中心的超级发射产生的量子干扰效应。
Efficient interfaces between photons and quantum emitters form the basis for quantum networks and enable optical nonlinearities at the single-photon level. We demonstrate an integrated platform for scalable quantum nanophotonics based on silicon-vacancy (SiV) color centers coupled to diamond nanodevices. By placing SiV centers inside diamond photonic crystal cavities, we realize a quantum-optical switch controlled by a single color center. We control the switch using SiV metastable states and observe optical switching at the singlephoton level. Raman transitions are used to realize a single-photon source with a tunable frequency and bandwidth in a diamond waveguide. By measuring intensity correlations of indistinguishable Raman photons emitted into a single waveguide, we observe a quantum interference effect resulting from the superradiant emission of two entangled SiV centers.