论文标题
通过量子干扰消除量子点纠缠光子源中的时间相关性
Eliminating temporal correlation in quantum-dot entangled photon source by quantum interference
论文作者
论文摘要
作为有希望的固态平台，半导体量子点表现出确定性的光子对产生，具有高极化纠缠f \ textcompwordmark idelity，用于量子信息应用。但是，由于固有级联发射的时间相关性，光子的不可区分性是有限的，这将其潜在的可扩展性限制为多光子实验。在这里，通过利用量子干扰将极化纠缠与时间相关性解脱，我们将多光子纠缠f \ textcompwordmark idelity从$（58.7 \ pm 2.2）\％$ $ $（75.5 \ pm 2.0）\％$ $ $ $ $ $ $ $ $。我们的工作铺平了从量子点实现可扩展和高质量的多光子状态的方式。
Semiconductor quantum dots, as promising solid-state platform, have exhibited deterministic photon pair generation with high polarization entanglement f\textcompwordmark idelity for quantum information applications. However, due to temporal correlation from inherently cascaded emission, photon indistinguishability is limited, which restricts their potential scalability to multi-photon experiments. Here, by utilizing quantum interferences to decouple polarization entanglement from temporal correlation, we improve multi-photon entanglement f\textcompwordmark idelity from $(58.7\pm 2.2)\%$ to $(75.5\pm 2.0)\%$. Our work paves the way to realize scalable and high-quality multi-photon states from quantum dots.
