Global quantum networks for secure communication can be realised using large fleets of satellites distributing entangled photon-pairs between ground-based nodes. Because the cost of a satellite depends on its size, the smallest satellites will be most cost-effective. This paper describes a miniaturised, polarization entangled, photon-pair source operating on board a nano-satellite. The source violates Bell's inequality with a CHSH parameter of 2.6 ± 0.06. This source can be combined with optical link technologies to enable future quantum communication nano-satellite missions.
@article{arxiv.2006.14430,
title = {Entanglement demonstration on board a nano-satellite},
author = {Aitor Villar and Alexander Lohrmann and Xueliang Bai and Tom Vergoossen and Robert Bedington and Chithrabhanu Perumangatt and Huai Ying Lim and Tanvirul Islam and Ayesha Reezwana and Zhongkan Tang and Rakhitha Chandrasekara and Subash Sachidananda and Kadir Durak and Christoph F. Wildfeuer and Douglas Griffin and Daniel K. L. Oi and Alexander Ling},
journal= {arXiv preprint arXiv:2006.14430},
year = {2020}
}