High-Dimensional Deterministic Secure Quantum Communication with Reed-Solomon Erasure Coding
Cryptography and Security
Summary
The authors describe a method called Deterministic Secure Quantum Communication (DSQC) that lets people send messages securely using quantum channels without sharing keys beforehand. Their protocol uses a special kind of code (Reed-Solomon erasure coding) to protect messages from noise and errors during transmission. Unlike other quantum methods, this one doesn't need complex quantum memory or entanglement, making it simpler to build with current technology. The authors also show that this approach can send more information at once, speeding up communication.
Authors
L. F. A. de Sousa Moura, G. L. Zanin, P. H. Souto Ribeiro, C. Becker Westphall
Abstract
Deterministic Secure Quantum Communication (DSQC) is a quantum cryptographic technique engineered to transfer a message through a quantum channel, requiring an auxiliary classical channel for eavesdropping verification and decoding, but without prior key distribution. This article presents a theoretical high-dimensional prepare and measure DSQC protocol using the Reed-Solomon erasure coding to ensure data resilience to noise. This protocol offers the following benefits: it eliminates the need for quantum memory or entanglement, it can be built with commercially available technology, and its higher capacity improves the overall transmission rate.