By pulsed s-shell resonant excitation of a single quantum dot-micropillar system, we generate long streams of a thousand of near transform-limited single photons with high mutual indistinguishability. Hong-Ou-Mandel interference of two photons are measured as a function of their emission time separation varying from 13 ns to 14.7 {\mu}s, where the visibility slightly drops from 95.9(2)% to a plateau of 92.1(5)% through a slow dephasing process occurring at time scale of 0.7 {\mu}s. Temporal and spectral analysis reveal the pulsed resonance fluorescence single photons are close to transform limit, which are readily useful for multi-photon entanglement and interferometry experiments.
@article{arxiv.1602.07386,
title = {Near Transform-Limited Single Photons from an Efficient Solid-State Quantum Emitter},
author = {Hui Wang and Z. -C. Duan and Y. -H. Li and Si Chen and J. -P. Li and Y. -M. He and M. -C. Chen and Yu He and X. Ding and Cheng-Zhi Peng and Christian Schneider and Martin Kamp and Sven Höfling and Chao-Yang Lu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:1602.07386},
year = {2016}
}
Comments
Phys. Rev. Lett. accepted. Steams of thousands of identical (>92%) single photons. For similar performance, pulsed single photon count rate updated to >6 million per sec