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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 -1-023808 -7. ISSN 1050-2947

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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.

Item type: Article
ID code: 19253
Keywords: cryptographic protocols, quantum cryptography, Physics, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 14 Jun 2010 10:19
    Last modified: 28 Mar 2014 05:18
    URI: http://strathprints.strath.ac.uk/id/eprint/19253

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