He Yu-Ming, Liu Jin, Maier Sebastian, Emmerling Monika, Gerhardt Stefan, Davanço Marcelo, Srinivasan Kartik, Schneider Christian, Höfling Sven
Technische Physik and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Physikalisches Institut, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Optica. 2017 Jul 20;4(7):802-808. doi: 10.1364/OPTICA.4.000802. Epub 2017 Jul 17.
Deterministic techniques enabling the implementation and engineering of bright and coherent solid-state quantum light sources are key for the reliable realization of a next generation of quantum devices. Such a technology, at best, should allow one to significantly scale up the number of implemented devices within a given processing time. In this work, we discuss a possible technology platform for such a scaling procedure, relying on the application of nanoscale quantum dot imaging to the pillar microcavity architecture, which promises to combine very high photon extraction efficiency and indistinguishability. We discuss the alignment technology in detail, and present the optical characterization of a selected device which features a strongly Purcell-enhanced emission output. This device, which yields an extraction efficiency of = (49 ± 4) %, facilitates the emission of photons with (94 ± 2.7) % indistinguishability.
实现明亮且相干的固态量子光源并将其工程化的确定性技术，是可靠实现下一代量子器件的关键。这样一种技术，最好能让人们在给定的处理时间内显著扩大已实现器件的数量。在这项工作中，我们讨论了一种用于这种扩展过程的可能技术平台，该平台依赖于将纳米级量子点成像应用于柱形微腔架构，有望实现非常高的光子提取效率和不可区分性。我们详细讨论了对准技术，并展示了一个具有强珀塞尔增强发射输出的选定器件的光学特性。该器件的提取效率为 = (49 ± 4) %，能够产生不可区分性为 (94 ± 2.7) % 的光子发射。
