Extended Data Fig. 1: Satellite-to-Delingha link efficiencies under different weather conditions.
From: Entanglement-based secure quantum cryptography over 1,120 kilometres
a, The data in previous work23 was taken in different orbits during the period of 7 December 2016 to 22 December 2016. b, The data in current work was taken in different orbits during the period of 6 September 2018 to 22 October 2018. Here the change of link efficiencies on different days was caused by the weather conditions.
