量子光的片上产生、路由和检测
On-chip generation, routing and detection of quantum light
摘要：
基于半导体的光子信息技术正迅速地被推向量子极限，其中光的非经典状态可以在原型量子光学电路中产生、操纵和利用。在这里，我们报告的芯片上产生的量子光从个人，共振激发自组装InGaAs量子点，有效的路由长度尺度$\geq 1$ mm通过GaAs脊波导和原位检测使用倏逝耦合集成NbN超导单光子探测器在同一芯片上制造。通过时间上过滤的时间分辨的发光信号，从单一的，共振激发的量子点，我们使用的原型量子光学电路进行时间分辨的激发光谱上的单点，并证明共振荧光的线宽为$10 \pm 1 \ μ$ eV的，所需的关键要素使用单光子在原型量子光子电路。
英文摘要：
Semiconductor based photonic information technologies are rapidly being pushed to the quantum limit where non-classical states of light can be generated, manipulated and exploited in prototypical quantum optical circuits. Here, we report the on-chip generation of quantum light from individual, resonantly excited self-assembled InGaAs quantum dots, efficient routing over length scales $\geq 1$ mm via GaAs ridge waveguides and in-situ detection using evanescently coupled integrated NbN superconducting single photon detectors fabricated on the same chip. By temporally filtering the time-resolved luminescence signal stemming from single, resonantly excited quantum dots we use the prototypical quantum optical circuit to perform time-resolved excitation spectroscopy on single dots and demonstrate resonant fluorescence with a line-width of $10 \pm 1 \ μ$eV; key elements needed for the use of single photons in prototypical quantum photonic circuits.
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