Perfect teleportation and superdense coding through an asymmetric five qubit state

TL;DR

This paper demonstrates how a specific five-qubit asymmetric entangled state enables perfect quantum teleportation of single and two-qubit states and allows transmitting five classical bits by sending only three qubits.

Contribution

It introduces a variant of the Brown state as a resource for perfect teleportation and superdense coding with reduced entanglement.

Findings

Perfect teleportation of single and two-qubit states achieved.

Transmission of five classical bits with only three qubits sent.

The state can arise from decoherence or be purposefully prepared.

Abstract

We explicate an example of the so called Task oriented Maximally Entangled states (TMES) in the context of teleportation and superdense coding. In physical situation, this state can emerge from decoherence of more entangled state or may be prepared for the purpose at hand, with less entanglement resource. We find that a variant of the Brown state can be utilized for perfect teleportation of single and two qubit states. In case of superdense coding, it is observed that five cbits can be transmitted by sending only three qubits.