Supervised secure entanglement sharing for faithful quantum teleportation via tripartite W states

Details Supervised secure entanglement sharing for faithful quantum teleportation via tripartite W states Supervised secure entanglement sharing for faithful quantum teleportation via tripartite W states

2007-09-10

arxiv.org/abs/0709.1449v2

Physics

Quantum Physics

7 pages, 4 figures, revised the detection mode and security analysis, added one successful eavesdropping rate plot in Fig. 3

Scientific paper

We present a supervised secure entanglement sharing protocol via tripartite W states for faithful quantum teleportation. By guaranteeing a secure entanglement distribution in the charge of a third believed supervisor, quantum information of an unknown state of a 2-level particle can be faithfully teleported from the sender to the remote receiver via the Bell states distilled from the tripartite W states. We emphasize that reliable teleportation after our protocol between two communication parties depends on the agreement of the supervisor to cooperate via taking the W states as both the quantum channel and eavesdropping detector. The security against typical individual eavesdropping attacks is proved and its experimental feasibility is briefly illustrated.

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