Quantum teleportation using non-orthogonal entangled channels

TL;DR

This paper explores quantum teleportation using non-orthogonal entangled states, extending standard protocols and analyzing how non-orthogonality affects fidelity compared to noisy or non-maximally entangled states.

Contribution

It introduces an extension of the teleportation protocol for non-orthogonal states and compares their efficiency to traditional entangled resources.

Findings

Non-orthogonal states can be used for teleportation with comparable fidelity.

Loss of fidelity depends on the degree of non-orthogonality.

Non-orthogonal states show potential as alternative teleportation resources.

Abstract

We study quantum teleportation with the resource of non-orthogonal qubit states. We first extend the standard teleportation protocol to the case of such states. We investigate how the loss of teleportation fidelity resulting for the use of non-orthogonal states compares to a similar loss of fidelity when noisy or non-maximally entangled states as used as teleportation resource. Our analysis leads to certain interesting results on the teleportation efficiency of both pure and mixed non-orthgonal states compared to that of non-maximally entangled and mixed states.