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  Quantum key distribution using multilevel encoding: security analysis

Bourennane, M., Karlsson, A., Björk, G., Gisin, N., & Cerf, N. J. (2002). Quantum key distribution using multilevel encoding: security analysis. Journal of Physics A-Mathematical and General, 35(47), 10065-10076. Retrieved from http://stacks.iop.org/0305-4470/35/10065.

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 Creators:
Bourennane, M.1, Author           
Karlsson, A., Author
Björk, G., Author
Gisin, N., Author
Cerf, N. J., Author
Affiliations:
1Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society, ou_1445568              

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 Abstract: We propose an extension of quantum key distribution based on encoding the key into quNits, i.e. quantum states in an N-dimensional Hilbert space. We estimate both the mutual information between the legitimate parties and the eavesdropper, and the error rate, as a function of the dimension of the Hilbert space. We derive the information gained by an eavesdropper using optimal incoherent attacks and an upper bound on the legitimate party error rate that ensures unconditional security when the eavesdropper uses finite coherent eavesdropping attacks. We also consider realistic systems where we assume that the detector dark count probability is not negligible.

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Language(s): eng - English
 Dates: 2002-11-29
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 28870
ISI: 000180288900013
URI: http://stacks.iop.org/0305-4470/35/10065
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Title: Journal of Physics A-Mathematical and General
  Alternative Title : J. Phys. A-Math. Gen.
Source Genre: Journal
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Pages: - Volume / Issue: 35 (47) Sequence Number: - Start / End Page: 10065 - 10076 Identifier: ISSN: 0305-4470