嵌入平面微腔的自组装横向InGaAs量子点分子的偏振精细结构与增强单光子发射
其他凝聚态物理
2012-03-02 v1 材料科学
摘要
为了增加发光提取效率，将单个横向 InGaAs 量子点分子嵌入到平面微腔中。通过结合金属有机气相外延和分子束外延技术，可以制备出单光子发射率增强 30 倍的样品。我们还证明，通过施加横向电场，单光子发射可以在两种不同的分子激子复合能量之间完全切换。此外，我们报道了分子中性激子态存在偏振精细结构分裂，这导致两个偏振分裂的经典关联双激子-激子级联。发现精细结构分裂约为 10 微电子伏。
引用
@article{arxiv.0809.2544,
title = {Polarization fine-structure and enhanced single-photon emission of self-assembled lateral InGaAs quantum dot molecules embedded in a planar micro-cavity},
author = {C. Hermannstädter and M. Witzany and G. J. Beirne and W. -M. Schulz and M. Eichfelder and R. Rossbach and M. Jetter and L. Wang and A. Rastelli and O. G. Schmidt and P. Michler},
journal= {arXiv preprint arXiv:0809.2544},
year = {2012}
}
备注
14 pages, 4 figures; the following article has been submitted to Journal of Applied Physics (29th ICPS - invited paper); after it is published, it will be found at http://jap.aip.org/