Efficient quantum key distribution based on Pulse-position modulation

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

1 Scopus citations

Abstract

Pulse-position modulation (PPM) is a promising technique that can be used to improve the efficiency of quantum key distribution (QKD) based on a Poisson photon source. In this paper, we first investigate a simple entanglement-and-PPM-based QKD protocol and demonstrate the improvement in secret key rate. However, such a PPM-based QKD protocol that utilizes only frames with a single click is still inefficient because it ignores frames with two and more clicks. For this reason we propose to use such multi-click frames to further improve the efficiency of PPM-based QKD by employing a better sifting strategy. Specifically, we focus on using the frames with two clicks in addition to those with a single click. Finally, we analyze the secret key rate under various noise levels in the scenario of high channel loss, which has been faced by most QKD applications. With the analytical results, we show the advantage of the proposed PPM-based QKD.

Original languageEnglish (US)
Title of host publicationEmerging Technologies in Security and Defence II; and Quantum-Physics-Based Information Security III
EditorsKeith L. Lewis, Mark T. Gruneisen, John G. Rarity, Richard C. Hollins, Miloslav Dusek, Thomas J. Merlet, Alexander Toet
PublisherSPIE
ISBN (Electronic)9781628413175
DOIs
StatePublished - Jan 1 2014
EventEmerging Technologies in Security and Defence II; and Quantum-Physics-Based Information Security III - Amsterdam, Netherlands
Duration: Sep 22 2014Sep 23 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9254
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherEmerging Technologies in Security and Defence II; and Quantum-Physics-Based Information Security III
CountryNetherlands
CityAmsterdam
Period9/22/149/23/14

Keywords

  • Pulse-position modulation
  • Quantum key distribution
  • Secret key rate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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