Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond
Coupling of a single tin-vacancy center to a photonic crystal cavity in diamond
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DOI：
10.1063/5.0051675
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发表时间：
2021-06-07
影响因子：
4
通讯作者：
Loncar, Marko
中科院分区：
文献类型：
--
作者：
Kuruma, Kazuhiro;Pingault, Benjamin;Loncar, Marko
我们证明了金刚石中单一的TiN空位(SNV)中心与独立的光子晶体纳米束腔之间的光学耦合。这些空腔是用准各向同性刻蚀方法制造的，并具有实验测量的高达11000的品质因数。通过激光诱导气体解吸技术控制腔体波长，研究了单个SNV中心发射的依赖关系。在共振条件下，我们观察到SNV发射的强度增加了12倍，SNV寿命缩短了16倍。基于腔内SNV发射率的大幅度提高，我们估计SNV零声子线的珀塞尔因子为37，SNV中心与腔的耦合效率β因子为95%。我们的工作为利用钻石中SNV色心实现基于高效光子界面的量子光子器件和系统铺平了道路。
We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and a free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching and feature experimentally measured quality factors as high as similar to 11000. We investigate the dependence of a single SnV center's emission by controlling the cavity wavelength using a laser-induced gas desorption technique. Under resonance conditions, we observe an intensity enhancement of the SnV emission by a factor of 12 and a 16-fold reduction of the SnV lifetime. Based on the large enhancement of the SnV emission rate inside the cavity, we estimate the Purcell factor for the SnV zero-phonon line to be 37 and the coupling efficiency of the SnV center to the cavity, the beta factor, to be 95%. Our work paves the way for the realization of quantum photonic devices and systems based on efficient photonic interfaces using the SnV color center in diamond.