Inter-Symbol-Interference Reduction in Continuous Variable QKD Using Equalization

Xinke Tang, Rupesh Kumar, David Cunningham, Adrian Wonfor, Richard Penty, Ian White

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

Abstract

Inter-symbol-interference (ISI) noise in Continuous Variable Quantum Key Distribution (CVQKD) is caused by the overlap between the consecutive detected signals. In practice, this problem limits the repetition rate of the quantum signals for a given bandwidth detector and hence reduces the rate of secure key generation. We propose a method of using equalization to mitigate ISI noise in CVQKD systems. Its feasibility is studied using an analytical model with practical parameters. The improved performance of CVQKD detection is investigated using secure key analysis. The simulation results show an increase of 12.8 Mbits/s in secure key rate for a 1GHz bandwidth CVQKD system operating over a 20 km link.

Original languageEnglish
Title of host publication2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings
PublisherIEEE
ISBN (Electronic)9781538649206
DOIs
Publication statusPublished - 19 Feb 2019
Event2018 IEEE Globecom Workshops, GC Wkshps 2018 - Abu Dhabi, UAE United Arab Emirates
Duration: 9 Dec 201813 Dec 2018

Publication series

NameIEEE Globecom Workshops
PublisherIEEE
ISSN (Print)2166-0077

Conference

Conference2018 IEEE Globecom Workshops, GC Wkshps 2018
CountryUAE United Arab Emirates
CityAbu Dhabi
Period9/12/1813/12/18

Keywords

  • Continuous Variable Quantum Key Distribution
  • Equalization
  • Quantum communication

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Safety, Risk, Reliability and Quality

Cite this

Tang, X., Kumar, R., Cunningham, D., Wonfor, A., Penty, R., & White, I. (2019). Inter-Symbol-Interference Reduction in Continuous Variable QKD Using Equalization. In 2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings [8644125] (IEEE Globecom Workshops). IEEE. https://doi.org/10.1109/GLOCOMW.2018.8644125