Quantum Hyperdense Coding for Distributed Communications

TL;DR

This paper introduces a quantum hyperdense coding protocol that leverages entanglement to significantly increase data transmission capacity in distributed communication systems, surpassing classical limits.

Contribution

It presents a novel protocol that enables transmitting approximately 2.5 classical bits using a single classical bit and a Bell pair, enhancing quantum communication efficiency.

Findings

Average transmission of 2.5 classical bits per classical bit used.

Demonstrates increased capacity over traditional superdense coding.

Opens new avenues for two-way distributed quantum communication.

Abstract

Superdense coding proved that entanglement-assisted quantum communications can improve the data transmission rates compared to classical systems. It allows sending 2 classical bits between the parties in exchange of 1 quantum bit and a pre-shared entangled Bell pair. This paper introduces a new protocol which is intended for distributed communication. Using a pre-shared entangled Bell pair and 1 classical bit 2,5 classical bits can be transmitted in average. This means not only valuable increase in capacity but the two-way distributed operation opens new fields of investigation.