Perfect Teleportation, Quantum state sharing and Superdense Coding through a Genuinely Entangled Five-qubit State

TL;DR

This paper explores a specific five-qubit entangled state for perfect quantum teleportation, sharing, and superdense coding, demonstrating its versatility and efficiency in quantum communication protocols.

Contribution

It introduces new schemes utilizing a recently identified five-qubit state for perfect teleportation, quantum state sharing, and superdense coding, highlighting its practical utility.

Findings

Enables perfect teleportation of single and two-qubit states

Provides schemes for quantum state sharing of arbitrary states

Allows sending five classical bits by transmitting three qubits

Abstract

We investigate the usefulness of a recently introduced five qubit state by Brown $\it et al. \normalfont$ \cite{Brown} for quantum teleportation, quantum state sharing and superdense coding. It is shown that this five-qubit state can be utilized for perfect teleportation of arbitrary single and two qubit systems. We devise various schemes for quantum state sharing of an arbitrary single and two particle state via cooperative teleportation. We later show that this state can be used for superdense coding as well. It is found that five classical bits can be sent by sending only three quantum bits.