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). ISSN 1094-1622Full text not available in this repository. (Request a copy from the Strathclyde author)
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, Physics, Atomic and Molecular Physics, and Optics|
|Subjects:||Science > Physics|
|Department:||Faculty of Science > Physics|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||14 Jun 2010 09:19|
|Last modified:||04 May 2016 15:53|