Postselected indistinguishable single-photon emission from the Mollow triplet sidebands of a resonantly excited quantum dot
Postselected indistinguishable single-photon emission from the Mollow triplet sidebands of a resonantly excited quantum dot
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DOI：
10.1103/physrevb.87.241302
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发表时间：
2013-06-10
影响因子：
3.7
通讯作者：
Michler, P.
中科院分区：
文献类型：
--
作者：
Weiler, S.;Stojanovic, D.;Michler, P.
将高功率连续波谐振S壳层激发应用于单个自组装的InGaAs量子点，我们演示了从Mollow三重态边带中产生后选择的单不可分辨光子。基于双迈克尔逊干涉仪的复杂空间滤波技术使我们能够分离光谱上接近的单个Mollow分量，并执行几乎无背景的双光子干涉测量。与250+/-30ps的发射相干性的独立测量结果高度一致，我们的分析显示了高达97%的接近理想的能见度对比度。由于它们的光谱可调谐性和它们在单个Mollow边带之间进行级联光子发射的独特优势，它们类似于量子信息应用的一种通用工具。
Applying high-power continuous-wave resonant s-shell excitation to a single self-assembled InGaAs quantum dot, we demonstrate the generation of postselected single-indistinguishable photons from the Mollow triplet sidebands. A sophisticated spatial filtering technique based on a double Michelson interferometer enabled us to separate the spectrally close lying individual Mollow components and perform almost background-free two-photon interference measurements. Showing high consistency with the results of an independent determination of the emission coherence of similar to 250 +/- 30 ps, our analysis reveals a close to ideal visibility contrast of up to 97%. Due to their easy spectral tunability and their distinct advantage of cascaded-photon emission between the individual Mollow sidebands, they resemble a versatile tool for quantum information applications.