Quantum Secure Routing for Future Internet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In this paper, we numerically evaluated an optically switched multi-user Quantum Key Distribution (QKD) network for the end-to-end secure signal transmission with the metropolitan area network (MAN) applications. The multi-user network performance can be enhanced via MEMS (Micro-Electro-Mechanical Systems) technology to get the maximum secure key rates due to the less insertion loss and crosstalk for switching operation. We have analyzed a four-state, quadrature-phase shift keying (QPSK) transmitter to generate quantum keys, i.e. Alice, while a classical coherent receiver aided by the digital post-processing unit is being used as Bob. To route the secure QKD traffic to the end-users, 1x2, 1x4, 1x8 and 1x12 switching configurations have been analyzed for the transmission distance ranging from 0 to 60 km. We have achieved the secure key rates of 30 Mbit/s and 100 Mbit/s for the 1x12 and 1x2 switching configurations, respectively. We have also compared the performance of routed QKD traffic with a simple point-to-point QKD system and the classical DV-QKD protocol. The QKD networks need an effective low-loss fibre channel and a distribution system to enhance the transmission distance of the secure keys and applications. This paper provides multi-user used case as an important paradigm with the corresponding scheme and simulation performances.

Original languageEnglish
Title of host publication2020 International Conference on Information Networking (ICOIN)
Number of pages5
ISBN (Electronic)9781728141985
Publication statusPublished - 2020

Publication series

NameInternational Conference on Information Networking
ISSN (Print)1976-7684

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