A highly pure and stable single-photon source is prepared that comprises a well-designed pillar array in which each pillar contains only a few InAs quantum dots. A nano-pillar in this array is in direct contact with a fiber end surface and cooled in a liquid-He bath. Auto-correlation measurement shows that this source provides an average g(2)(0) value of 0.0174 in the measured excitation-power range. This photon source and fiber coupling are quite rigid against external disturbances such as cooling-heating cycles and vibration, with long-term stability.
@article{arxiv.1707.03131,
title = {Fiber-coupled pillar array as a highly pure and stable single-photon source},
author = {Satoru Odashima and Hirotaka Sasakura and Hideaki Nakajima and Hidekazu Kumano},
journal= {arXiv preprint arXiv:1707.03131},
year = {2017}
}