Quantum key distribution via tripartite coherent states

Authors:
A. El Allati;M. El Baz;Y. Hassouni
Affiliations:
Faculté des sciences, Département de Physique, Laboratoire de Physique Théorique URAC 13, Université Mohammed V, Rabat, Morocco;Faculté des sciences, Département de Physique, Laboratoire de Physique Théorique URAC 13, Université Mohammed V, Rabat, Morocco;Faculté des sciences, Département de Physique, Laboratoire de Physique Théorique URAC 13, Université Mohammed V, Rabat, Morocco
Venue:
Quantum Information Processing
Year:
2011

Citing 2
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Abstract

We propose a quantum key distribution protocol using Greenberger Horne Zeilinger tripartite coherent states. The sender and the receiver share similar key by exchanging the correlation coherent states, without basis reconciliation. This allows the protocol to have a transmission efficiency of 100% in a perfect quantum channel. The security of the protocol is ensured by tripartite coherent states correlation and homodyne detection, which allows to detect any eavesdropping easily.