Open AccessStellar calibration of the single-photon receiver for satellite-to-ground quantum key distribution
Author(s) -
Aleksandr V. Khmelev,
Alexey V. Duplinsky,
V. L. Kurochkin,
Y. V. Kurochkin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2086/1/012137
Subject(s) - quantum key distribution , satellite , physics , remote sensing , brightness , photon , computer science , optics , astronomy , geography
Satellite quantum communication is the technology that allows to deploy large-scale quantum networks with a communication range of thousands kilometres We report the ground receiver for downlink quantum key distribution (QKD) with satellite. An optical part of this system including an active tracking loop is mounted on a 600-mm Ritchey-Chretien telescope and permits to distinguish polarization states to perform QKD between ground and satellite. Moreover, a procedure of calibration the receiver using stars with known brightness is presented. Measurements of the photon count rate of stars in the spectral range of 845 nm - 855 nm are performed and compared with an estimate.