论文标题
来自嵌入自对准腔中的量子点的纠缠光子对
Entangled photon pairs from quantum dots embedded in a self-aligned cavity
论文作者
论文摘要
我们引入了一个可扩展的光子平台，该平台可以从半导体量子点有效地产生纠缠的光子对。我们的系统基于自我对准的量子点 - 微腔结构，它消除了对光刻和纳米制作的复杂步骤的需求。我们通过实验表明，收集效率为0.17，在配对发射过程中的purcell增强效率高达1.7。我们利用设备的潜力生成纠缠在时间箱中的光子对，并在最大纠缠状态下达到0.84（5）的保真度。实现的配对收集效率比最新技术大4倍。从理论上讲，该设备以接近0.5的效率支持对成对提取效率，是实施明亮源，极化和超级纠缠的光子对的有希望的候选者。
We introduce a scalable photonic platform that enables efficient generation of entangled photon pairs from a semiconductor quantum dot. Our system, which is based on a self-aligned quantum dot-micro-cavity structure, erases the need for complex steps of lithography and nanofabrication. We experimentally show collection efficiency of 0.17 combined with a Purcell enhancement of up to 1.7 in the pair emission process. We harness the potential of our device to generate photon pairs entangled in time bin, reaching a fidelity of 0.84(5) with the maximally entangled state. The achieved pair collection efficiency is 4 times larger than the state-of-the art. The device, which theoretically supports pair extraction efficiencies of nearly 0.5 is a promising candidate for the implementation of bright sources of time-bin, polarization- and hyper entangled photon pairs in a straightforward manner.
