Open AccessA satellite-based quantum key distribution using decoy-state protocol
Author(s) -
Ahmed Mahmoud Sofy,
M Y Shalaby,
Hisham Dahshan
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1172/1/012010
Subject(s) - quantum key distribution , computer science , computer network , key (lock) , protocol (science) , quantum network , quantum channel , satellite , photon , quantum , physics , computer security , quantum information , optics , quantum mechanics , alternative medicine , pathology , astronomy , medicine
An ideal QKD implementation that provides the promising unconditional security using single photon laser source is not practically easy, also sending these photons over a fiber channel affects the maximum distance of link up to few hundreds of kilometers because of the receiver’s detectors losses. Therefore, the achievement of a global quantum network is not easy, and the need to use LEO satellites [1,2] for establishing quantum links makes the job easier as quantum free space link provides much less losses to the link than fiber links. Nowadays, a quantum communication link can be established by satellites through free space. in this paper, we propose an implementation [3] of a satellite-based quantum key distribution using decoy-state protocol [4], we then compare this protocol with the BB-84 protocol [3] against security and the key length of the generated shared key.