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 language | English |
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Title of host publication | 2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings |
Publisher | IEEE |
ISBN (Electronic) | 9781538649206 |
DOIs | |
Publication status | Published - 19 Feb 2019 |
Event | 2018 IEEE Globecom Workshops, GC Wkshps 2018 - Abu Dhabi, UAE United Arab Emirates Duration: 9 Dec 2018 → 13 Dec 2018 |
Publication series
Name | IEEE Globecom Workshops |
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Publisher | IEEE |
ISSN (Print) | 2166-0077 |
Conference
Conference | 2018 IEEE Globecom Workshops, GC Wkshps 2018 |
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Country/Territory | UAE United Arab Emirates |
City | Abu Dhabi |
Period | 9/12/18 → 13/12/18 |
Funding
ACKNOWLEDGMENT We thank Xiaohe Dong for valuable discussions. This work has been supported by the Quantum Communication Hub, through the EPSRC UK National Quantum Technology Programme.
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