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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Enhancing the photon-extraction efficiency of site-controlled quantum dots by deterministically fabricated microlenses
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Enhancing the photon-extraction efficiency of site-controlled quantum dots by deterministically fabricated microlenses

机译:通过确定的微透镜提高位点控制量子点的光子提取效率

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摘要

We report on the realization of scalable single-photon sources (SPSs) based on single site-controlled quantum dots (SCQDs) and deterministically fabricated microlenses. The fabrication process comprises the buried-stressor growth technique complemented with low-temperature in-situ electron-beam lithography for the integration of SCQDs into microlens structures with high yield and high alignment accuracy. The microlens-approach leads to a broadband enhancement of the photon-extraction efficiency of up to (21 +/- 2)% and a high suppression of multi-photon events with g((2))(tau = 0) 0.06 without background subtraction. The demonstrated combination of site-controlled growth of QDs and in-situ electron-beam lithography is relevant for arrays of efficient SPSs which, can be applied in photonic quantum circuits and advanced quantum computation schemes. (C) 2017 Elsevier B.V. All rights reserved.
机译:我们报告了基于单站点控制量子点(SCQDS)和确定性制造的微透镜来实现可扩展的单光子源(SPSS)。 制造工艺包括掩埋 - 应力源的生长技术,其辅以低温原位电子束光刻,用于将SCQDS集成到具有高产率和高对准精度的微透镜结构中。 微透镜 - 方法导致光子提取效率高达(21 +/- 2)%的宽带提高,并且具有G((2))(tau = 0)(Tau = 0)的多光子事件的高抑制 0.06没有背景减法。 所证明的QDS和原位电子束光刻的站点控制生长的组合对于高效SPSS阵列相关,可以应用于光子量子电路和高级量子计算方案。 (c)2017年Elsevier B.V.保留所有权利。

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