论文标题
基于线性偶极子的明亮极化单光子源
Bright Polarized Single-Photon Source Based on a Linear Dipole
论文作者
论文摘要
腔中的半导体量子点是有希望的单光子来源。在这里，我们通过通过语音辅助激发来利用中性量子点中的固有线性偶极子来提出确定性操作的路径。这使得完全极化的单光子的排放，线性极化程度高达0.994 $ \ pm $ 0.007，人口倒数高 - 85 \％\％高于共振激发。我们展示了一个单光子源，其两极化的第一镜头亮度为0.50 $ \ pm $ 0.01，单光子纯度为0.954 $ \ pm $ 0.001和单光子的不可区分性为0.909 $ \ pm $ 0.004。
Semiconductor quantum dots in cavities are promising single-photon sources. Here, we present a path to deterministic operation, by harnessing the intrinsic linear dipole in a neutral quantum dot via phonon-assisted excitation. This enables emission of fully polarized single photons, with a measured degree of linear polarization up to 0.994 $\pm$ 0.007, and high population inversion -- 85\% as high as resonant excitation. We demonstrate a single-photon source with a polarized first lens brightness of 0.50 $\pm $ 0.01, a single-photon purity of 0.954 $\pm$ 0.001 and single-photon indistinguishability of 0.909 $\pm$ 0.004.
