Quantum public key distribution with imperfect device components

Craig Hamilton, H. Lavicka, Erika Andersson, John Jeffers, Igor Jex

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We examine the operation of a device for a public quantum key distribution network. The recipients attempt to determine whether or not their individual key copies, which are a sequence of coherent states, are identical. To quantify the success of the protocol we use a fidelity-based figure of merit and describe a method for increasing this in the presence of noise and imperfect detectors. We show that the fidelity may be written as the product of two factors: one that depends on the properties of the device setup and another that depends on the detectors used. We then demonstrate the effect various parameters have on the overall effective operation of the device.
LanguageEnglish
Article number023808
Number of pages7
JournalPhysical Review A
Volume79
Issue number2
DOIs
Publication statusPublished - Feb 2009

Fingerprint

detectors
figure of merit
products

Keywords

  • cryptographic protocols
  • quantum cryptography

Cite this

Hamilton, Craig ; Lavicka, H. ; Andersson, Erika ; Jeffers, John ; Jex, Igor. / Quantum public key distribution with imperfect device components. In: Physical Review A. 2009 ; Vol. 79, No. 2.
@article{f051db69826d4f4991dc0a927b6beabb,
title = "Quantum public key distribution with imperfect device components",
abstract = "We examine the operation of a device for a public quantum key distribution network. The recipients attempt to determine whether or not their individual key copies, which are a sequence of coherent states, are identical. To quantify the success of the protocol we use a fidelity-based figure of merit and describe a method for increasing this in the presence of noise and imperfect detectors. We show that the fidelity may be written as the product of two factors: one that depends on the properties of the device setup and another that depends on the detectors used. We then demonstrate the effect various parameters have on the overall effective operation of the device.",
keywords = "cryptographic protocols, quantum cryptography",
author = "Craig Hamilton and H. Lavicka and Erika Andersson and John Jeffers and Igor Jex",
year = "2009",
month = "2",
doi = "10.1103/PhysRevA.79.023808",
language = "English",
volume = "79",
journal = "Physical Review A - Atomic, Molecular, and Optical Physics",
issn = "1050-2947",
number = "2",

}

Quantum public key distribution with imperfect device components. / Hamilton, Craig; Lavicka, H.; Andersson, Erika; Jeffers, John; Jex, Igor.

In: Physical Review A, Vol. 79, No. 2, 023808 , 02.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Quantum public key distribution with imperfect device components

AU - Hamilton, Craig

AU - Lavicka, H.

AU - Andersson, Erika

AU - Jeffers, John

AU - Jex, Igor

PY - 2009/2

Y1 - 2009/2

N2 - We examine the operation of a device for a public quantum key distribution network. The recipients attempt to determine whether or not their individual key copies, which are a sequence of coherent states, are identical. To quantify the success of the protocol we use a fidelity-based figure of merit and describe a method for increasing this in the presence of noise and imperfect detectors. We show that the fidelity may be written as the product of two factors: one that depends on the properties of the device setup and another that depends on the detectors used. We then demonstrate the effect various parameters have on the overall effective operation of the device.

AB - We examine the operation of a device for a public quantum key distribution network. The recipients attempt to determine whether or not their individual key copies, which are a sequence of coherent states, are identical. To quantify the success of the protocol we use a fidelity-based figure of merit and describe a method for increasing this in the presence of noise and imperfect detectors. We show that the fidelity may be written as the product of two factors: one that depends on the properties of the device setup and another that depends on the detectors used. We then demonstrate the effect various parameters have on the overall effective operation of the device.

KW - cryptographic protocols

KW - quantum cryptography

U2 - 10.1103/PhysRevA.79.023808

DO - 10.1103/PhysRevA.79.023808

M3 - Article

VL - 79

JO - Physical Review A - Atomic, Molecular, and Optical Physics

T2 - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 2

M1 - 023808

ER -