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Quantum key distribution over 30 km of standard fiber using energy-time entangled photon pairs: a comparison of two chromatic dispersion reduction methods

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Abstract.

We present a full implementation of a quantum key distribution system using energy-time entangled photon pairs over a 30 km standard telecom fiber quantum channel. Two bases of two orthogonal states are implemented and the set-up is shown to be robust to environmental constraints such as temperature variation. Two different ways to manage chromatic dispersion in the quantum channel are discussed.

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Authors and Affiliations

  1. Group of Applied Physics, University of Geneva, 20 rue de l’École-de-Médecine, 1211, Geneva 4, Switzerland

    S. Fasel, N. Gisin, G. Ribordy & H. Zbinden

Authors
  1. S. Fasel
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  2. N. Gisin
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  3. G. Ribordy
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  4. H. Zbinden
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Corresponding author

Correspondence to N. Gisin.

Additional information

Received: 22 March 2004, Published online: 22 June 2004

PACS:

03.67.Dd Quantum cryptography - 03.67.Hk Quantum communication

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Fasel, S., Gisin, N., Ribordy, G. et al. Quantum key distribution over 30 km of standard fiber using energy-time entangled photon pairs: a comparison of two chromatic dispersion reduction methods. Eur. Phys. J. D 30, 143–148 (2004). https://doi.org/10.1140/epjd/e2004-00080-8

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  • DOI: https://doi.org/10.1140/epjd/e2004-00080-8

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