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

TL;DR

This paper introduces a supervised protocol for secure entanglement sharing using tripartite W states, enabling faithful quantum teleportation with security against eavesdropping, relying on a trusted supervisor.

Contribution

The paper proposes a novel supervised entanglement sharing protocol utilizing tripartite W states for secure quantum teleportation, ensuring security and fidelity through a trusted supervisor.

Findings

Security against typical eavesdropping attacks is proved.

The protocol enables faithful teleportation conditioned on supervisor cooperation.

Experimental feasibility is briefly discussed.

Abstract

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.