Quantum public key distribution with imperfect device components

Hamilton, Craig and Lavicka, H. and Andersson, Erika and Jeffers, John and Jex, Igor (2009) Quantum public key distribution with imperfect device components. Physical Review A, 79 (2). 023808. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.79.023808)

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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.

ORCID iDs

Hamilton, Craig, Lavicka, H., Andersson, Erika, Jeffers, John ORCID logoORCID: https://orcid.org/0000-0002-8573-1675 and Jex, Igor;
  • Item type:Article
    ID code:19253
    Dates:
    Date
    Event
    February 2009
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Strathprints Administrator
    Date deposited:14 Jun 2010 09:19
    Last modified:11 Nov 2024 09:24
    URI:https://strathprints.strath.ac.uk/id/eprint/19253
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