Large scale quantum key distribution: challenges and solutions [Invited]

Qiang Zhang, Feihu Xu, Yu-Ao Chen, Cheng-Zhi Peng, Jian-Wei Pan
2018 Optics Express  
Quantum key distribution (QKD) together with one time pad encoding can provide information-theoretical security for communication. Currently, though QKD has been widely deployed in many metropolitan fiber networks, its implementation in a large scale remains experimentally challenging. This letter provides a brief review on the experimental efforts towards the goal of global QKD, including the security of practical QKD with imperfect devices, QKD metropolitan and backbone networks over optical
more » ... works over optical fiber and satellite-based QKD over free space.
doi:10.1364/oe.26.024260 pmid:30184911 fatcat:amfvwuk4s5gkxbnjytscbgnzdm