论文标题
最大纠缠和GHz锁定的点播光子对源
Maximally entangled and GHz-clocked on-demand photon pair source
论文作者
论文摘要
我们使用两光子激发基于液滴蚀刻的GAAS量子点提出了1 GHz锁定，最大纠缠和点播光子对源。通过使用这些差距微烯烃设备以及它们的实质亮度，最高$ 0.95 \ pm 0.01 $的原始纠缠忠诚度和最高0.93美元的$ 0.93 \ pm 0.01 $的光子的光子，适合基于量子重复的量子重复范围的量子量子符号分布。全面研究一组极化选择性的两光子相关性以及时间分析的洪 - 户外干扰促进了创新方法，这些方法促进了确定数量的创新方法，这些方法（例如，摘除光子提取和激发效率）以及直接使用的纯dephas-与常用的间接技术相反。
We present a 1 GHz-clocked, maximally entangled and on-demand photon pair source based on droplet etched GaAs quantum dots using two-photon excitation. By employing these GaP microlensenhanced devices in conjunction with their substantial brightness, raw entanglement fidelities of up to $0.95 \pm 0.01$ and post-selected photon indistinguishabilities of up to $0.93 \pm 0.01$, the suitability for quantum repeater based long range quantum entanglement distribution schemes is shown. Comprehensive investigations of a complete set of polarization selective two-photon correlations as well as time resolved Hong-Ou-Mandel interferences facilitate innovative methods that determine quantities such as photon extraction and excitation efficiencies as well as pure dephasing directly - opposed to commonly employed indirect techniques.
