Broadband Light Collection Efficiency Enhancement of Carbon Nanotube Excitons Coupled to Metallo-Dielectric Antenna Arrays
Broadband Light Collection Efficiency Enhancement of Carbon Nanotube Excitons Coupled to Metallo-Dielectric Antenna Arrays
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DOI：
10.1021/acsphotonics.7b00786
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发表时间：
2017-12
期刊：
影响因子：
7
通讯作者：
Kamran Shayan;Claire Rabut;Xiaoqing Kong;Xiangzhi Li;Yue Luo;Kevin S. Mistry;J. Blackburn;Stephanie S. Lee;S. Strauf
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文献类型：
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作者：
Kamran Shayan;Claire Rabut;Xiaoqing Kong;Xiangzhi Li;Yue Luo;Kevin S. Mistry;J. Blackburn;Stephanie S. Lee;S. Strauf
片上量子网络的理想实现需要光子和固态量子发射器之间的无损接口。我们提出并演示了金属介电天线（MDA）的片上阵列，该阵列通过捕获芯片上形成腔模式的气隙，从单个嵌入碳纳米管量子发射器中进行高效和宽带的光收集。通过采用聚合物层干转移技术，避免了溶剂不相容性问题，以及平面设计，避免了固体浸没透镜，实现了可扩展的实现。低温测量表明，与位于裸晶圆上的发射器相比，激子强度增强了7倍，在最佳情况下（平均LCE为69%），在±15°的窄输出锥中，光收集效率（LCE）高达92%，从而实现了先验的光纤到芯片对接耦合。演示的MDA阵列可直接与其他量子系统兼容，特别是2D材料，从而实现高效…
The realization of on-chip quantum networks ideally requires lossless interfaces between photons and solid-state quantum emitters. We propose and demonstrate on-chip arrays of metallo-dielectric antennas (MDA) that are tailored toward efficient and broadband light collection from individual embedded carbon nanotube quantum emitters by trapping air gaps on chip that form cavity modes. Scalable implementation is realized by employing polymer layer dry-transfer techniques that avoid solvent incompatibility issues, as well as a planar design that avoids solid-immersion lenses. Cryogenic measurements demonstrate 7-fold enhanced exciton intensity when compared to emitters located on bare wafers, corresponding to a light collection efficiency (LCE) up to 92% in the best case (average LCE of 69%) into a narrow output cone of ±15° that enables a priori fiber-to-chip butt coupling. The demonstrated MDA arrays are directly compatible with other quantum systems, particularly 2D materials, toward enabling efficient on...