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Quantum-Secured Data Transmission in Urban Fiber-Optics Communication Lines |
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| Authors: | A V Duplinskiy E O Kiktenko N O Pozhar M N Anufriev R P Ermakov A I Kotov A V Brodskiy R R Yunusov V L Kurochkin A K Fedorov Y V Kurochkin |
| Institution: | 1.Russian Quantum Center,Skolkovo,Russia;2.Moscow Institute of Physics and Technology,Dolgoprudny,Russia;3.QApp,Skolkovo,Russia;4.Steklov Mathematical Institute of the Russian Academy of Sciences,Moscow,Russia;5.AMICON Co., Ltd.,Moscow,Russia;6.Sberbank of Russia,Moscow,Russia;7.QRate,Skolkovo,Russia |
| Abstract: | Quantum key distribution (QKD) provides theoretic information security in communication based on the laws of quantum physics. In this work, we report an implementation of quantum-secured data transmission in the infrastructure of Sberbank of Russia in standard communication lines in Moscow. The experiment is realized on the basis of already deployed urban fiber-optics communication channels with significant losses. We realize the decoy-state BB84 QKD protocol using the one-way scheme with polarization encoding for generating keys. Quantum-generated keys are then used for continuous key renewal in the hardware devices for establishing a quantum-secured VPN Tunnel between two offices of Sberbank. The hybrid approach used offers possibilities for long-term protection of the transmitted data; it is promising for integrating in the already existing information security infrastructure. |
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