Superdense Coding Interleaved with Forward Error Correction

TL;DR

This paper explores how applying classical forward error correction with interleaving can mitigate noise effects in superdense coding, enhancing its practical performance in noisy quantum channels.

Contribution

It demonstrates that classical FEC combined with interleaving effectively reduces errors in superdense coding under noisy conditions, a novel approach for quantum communication.

Findings

Interleaving FEC improves error rates in superdense coding

Burst errors significantly impact superdense coding performance

Classical FEC with interleaving enhances near-term quantum communication demonstrations

Abstract

Superdense coding promises increased classical capacity and communication security but this advantage may be undermined by noise in the quantum channel. We present a numerical study of how forward error correction (FEC) applied to the encoded classical message can be used to mitigate against quantum channel noise. By studying the bit error rate under different FEC codes, we identify the unique role that burst errors play in superdense coding, and we show how these can be mitigated against by interleaving the FEC codewords prior to transmission. We conclude that classical FEC with interleaving is a useful method to improve the performance in near-term demonstrations of superdense coding.