Argiris Ntanos Dimitris Zavitsanos Nikolaos K. Lyras Giannis Giannoulis Hercules Avramopoulos On the Availability of the Decoy State BB84 QKD over a Terrestrial FSO Link. 1-6 2021 ONDM https://doi.org/10.23919/ONDM51796.2021.9492462 conf/ondm/2021 db/conf/ondm/ondm2021.html#NtanosZLGA21