Criterion for faithful teleportation with an arbitrary multiparticle channel

TL;DR

This paper introduces a general criterion for assessing whether a multiparticle entanglement channel can faithfully teleport arbitrary quantum states, simplifying experimental implementation compared to existing methods.

Contribution

It presents a new, practical criterion for faithful teleportation using arbitrary multiparticle channels, improving on previous protocols in terms of experimental feasibility.

Findings

Provides a universal criterion for teleportation fidelity

Simplifies experimental procedures for quantum teleportation

Enables assessment of complex multiparticle channels

Abstract

We consider quantum teleportation when the given entanglement channel is an arbitrary multiparticle state. A general criterion is presented, which allows one to judge if the channel can be used to teleport faithfully an arbitrary quantum state of a given dimension. The general protocol proposed here is much easier to implement experimentally than the others found in the literature.