Security of satellite-based CV-QKD under realistic assumptions

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

2 Scopus citations

Abstract

With the vastly growing need for secure communication, quantum key distribution (QKD) has been developed to provide high security for communications against potential attacks from the fast-developing quantum computers. Among different QKD protocols, continuous variable (CV-) QKD employing Gaussian modulated coherent states has been promising for its complete security proof and its compatibility with current communication systems in implementation with homodyne or heterodyne detection. Since satellite communication has been more and more important in developing global communication networks, there have been concerns about the security in satellite communication and how we should evaluate the security of CV-QKD in such scenarios. To better analyse the secure key rate (SKR) in this case, in this invited paper we investigate the CV-QKD SKR lower bounds under realistic assumptions over a satellite-to-satellite channel. We also investigate the eavesdropper's best strategy to apply in these scenarios. We demonstrate that for these channel conditions with well-chosen carrier centre frequency and receiver aperture size, based on channel parameters, we can optimize SKR correspondingly. The proposed satellite-based QKD system provides high security level for the coming 5G and beyond networks, the Internet of things, self-driving cars, and other fast-developing applications.

Original languageEnglish (US)
Title of host publication2020 22nd International Conference on Transparent Optical Networks, ICTON 2020
PublisherIEEE Computer Society
ISBN (Electronic)9781728184234
DOIs
StatePublished - Jul 2020
Event22nd International Conference on Transparent Optical Networks, ICTON 2020 - Bari, Italy
Duration: Jul 19 2020Jul 23 2020

Publication series

NameInternational Conference on Transparent Optical Networks
Volume2020-July
ISSN (Electronic)2162-7339

Conference

Conference22nd International Conference on Transparent Optical Networks, ICTON 2020
Country/TerritoryItaly
CityBari
Period7/19/207/23/20

Keywords

  • Quantum key distribution
  • Satellite-based communication

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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