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| HAL : hal-00663594, version 1 |
| DOI : 10.1103/PhysRevA.84.062317 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review A 84, 6 (2011) 062317 |
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| Long Distance Continuous-Variable Quantum Key Distribution with a Gaussian Modulation |
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| Paul Jouguet 1, 2Kunz-Jacques Sébastien 1 |
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| (21/12/2011) |
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| We designed high-efficiency error correcting codes allowing to extract an errorless secret key in a continuous-variable quantum key distribution protocol using a Gaussian modulation of coherent states and a homodyne detection. These codes are available for a wide range of signal-to-noise ratios on an AWGN channel with a binary modulation and can be combined with a multidimensional reconciliation method proven secure against arbitrary collective attacks. This improved reconciliation procedure considerably extends the secure range of a continuous-variable quantum key distribution with a Gaussian modulation, giving a secret key rate of about 10^{-3} bit per pulse at a distance of 120 km for reasonable physical parameters. |
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| 1 : | SeQureNet |
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SeQureNet |
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| 2 : | Laboratoire Traitement et Communication de l'Information [Paris] (LTCI) |
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Télécom ParisTech – CNRS : UMR5141 |
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| 3 : | The Institute of Photonic Sciences |
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Technical University of Catalogna |
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| Domaine | : | Physique/Physique Quantique |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00663594, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00663594 | |
| oai:hal.archives-ouvertes.fr:hal-00663594 | |
| Contributeur : Paul Jouguet | |
| Soumis le : Vendredi 27 Janvier 2012, 13:31:47 | |
| Dernière modification le : Vendredi 27 Janvier 2012, 16:38:58 | |
