Continuous variable quantum key distribution with multi-mode signals for noisy detectors

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper proposes a multi-mode Gaussian modulated continuous variable quantum key distribution (CV-QKD) scheme able to operate at high bandwidth despite using conventional noisy, coherent detectors. We demonstrate enhancement in shot-noise sensitivity as well as reduction in the electronic noise variance of the coherent receiver of the multi-mode CV-QKD system. A proof-of-concept simulation is presented using multiple modes; this demonstrates an increase in signal-to-noise ratio and secure key rate at various transmission distances with increasing signal modes.

Original languageEnglish
Pages (from-to)B109-B115
JournalJournal of the Optical Society of America B: Optical Physics
Volume36
Issue number3
Early online date22 Feb 2019
DOIs
Publication statusPublished - 1 Mar 2019

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Continuous variable quantum key distribution with multi-mode signals for noisy detectors. / Kumar, Rupesh; Tang, Xinke; Wonfor, Adrian; Penty, Richard; White, Ian.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 36, No. 3, 01.03.2019, p. B109-B115.

Research output: Contribution to journalArticle

Kumar, Rupesh ; Tang, Xinke ; Wonfor, Adrian ; Penty, Richard ; White, Ian. / Continuous variable quantum key distribution with multi-mode signals for noisy detectors. In: Journal of the Optical Society of America B: Optical Physics. 2019 ; Vol. 36, No. 3. pp. B109-B115.
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