Evanescent-field assisted photon collection from quantum emitters under a solid immersion lens
Evanescent-field assisted photon collection from quantum emitters under a solid immersion lens
复制标题
固体浸没透镜下的倏逝场辅助量子发射器收集光子
DOI：
10.1088/1367-2630/ac9697
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发表时间：
2022
影响因子：
3.3
通讯作者：
Bishop S
中科院分区：
文献类型：
--
作者：
Bishop S
固态量子光源在量子技术中的应用正在被广泛研究。一个关键的挑战是从高折射率的主体材料中提取光，这种材料的效率受到折射和全内反射的限制。在这里，我们展示了一个折射率匹配的固体浸没透镜，如果放置在离半导体足够近的地方，可以在表面提取通过逝去场耦合的光。采用数值模拟和实验相结合的方法，研究了改变半导体和透镜之间的隔离层厚度对收集效率的影响。利用自动选择和测量了几个氮化铝样品中的100个S可单独寻址的色心，我们展示了间隔厚度相关的光子CE增强，平均增强因子为4.2，最高测量光子探测率为743±4kcps。
Solid-state quantum light sources are being intensively investigated for applications in quantum technology. A key challenge is to extract light from host materials with high refractive index, where efficiency is limited by refraction and total internal reflection. Here we show that an index-matched solid immersion lens can, if placed sufficiently close to the semiconductor, extract light coupled through the evanescent field at the surface. Using both numerical simulations and experiments, we investigate how changing the thickness of the spacer between the semiconductor and lens impacts the collection efficiency (CE). Using automatic selection and measurement of 100 s of individually addressable colour centres in several aluminium nitride samples we demonstrate spacer-thickness dependent photon CE enhancement, with a mean enhancement factor of 4.2 and a highest measured photon detection rate of 743±4kcps.
影响因子：
4
作者：
S. Bishop;J. Hadden;R. Hekmati;J. K. Cannon;W. Langbein;A. Bennett
通讯作者：
S. Bishop;J. Hadden;R. Hekmati;J. K. Cannon;W. Langbein;A. Bennett
影响因子：
1.8
作者：
Zhu, T.;Oliver, R. A.
通讯作者：
Oliver, R. A.