Non-Standard Probabilistic Teleportation through Conventionally Non-Teleporting Channels

TL;DR

This paper introduces a probabilistic teleportation method that enables quantum state transfer through channels traditionally considered non-teleporting, utilizing entanglement monogamy and local measurements to succeed where conventional methods fail.

Contribution

The paper presents a novel teleportation scheme that works with non-maximally entangled and non-teleporting channels, expanding the scope of quantum teleportation techniques.

Findings

Successfully teleports states in cases where conventional methods fail

Identifies channels where the new method succeeds but traditional methods do not

Demonstrates applicability to W and other non-maximally entangled states

Abstract

A non-standard teleportation scheme is proposed, wherein probabilistic teleportation is achieved in conventionally non-teleporting channels. We make use of entanglement monogamy to incorporate an unknown state in a multipartite entangled channel, such that the receiver partially gets disentangled from the network. Subsequently, the sender performs local measurement based teleportation protocol in an appropriate measurement basis, which results with the receiver in the possession of an unknown state, connected by local unitary transformation with the state to be teleported. This procedure succeeds in a number of cases, like that of W and other non-maximally entangled four qubit states, where the conventional measurement based approach has failed. It is also found that in certain four particle channels, the present procedure does not succeed, although the conventional one works well.