微柱中共振驱动量子点产生具有高提取效率和近乎完全不可区分性的按需单光子
量子物理
2016-05-16 v2 介观与纳米尺度物理
摘要
可扩展的光子量子技术需要按需单光子源同时具备高纯度、不可区分性和高效率。然而，这些关键特征在以往的实验中仅被分别展示过。在此，通过对 Purcell-enhanced 量子点-微柱系统进行 s 壳层脉冲共振激发，我们确定性地产生了共振荧光单光子，在 pi 脉冲激发下，其提取效率为 66%，单光子纯度为 99.1%，光子不可区分性为 98.5%。这样的单光子源首次结合了高效率与近乎完美的纯度和不可区分性，从而为基于半导体量子点的多光子实验开辟了道路。
引用
@article{arxiv.1601.00284,
title = {On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar},
author = {Xing Ding and Yu He and Z. -C. Duan and Niels Gregersen and M. -C. Chen and S. Unsleber and S. Maier and Christian Schneider and Martin Kamp and Sven Höfling and Chao-Yang Lu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:1601.00284},
year = {2016}
}
备注
submitted to PRL on 29/09/2015, accepted on 01/12/2015, published on 14/01/2016, the first work reporting an "all-around" single-photon source that combines purity, indistinguishability, and efficiency. see https://aps.altmetric.com/details/4994109