On Finite-Blocklength Noisy Classical-Quantum Channel Coding With Amplitude Damping Errors
Information Theory
2025-09-19 v1 math.IT
Quantum Physics
Abstract
We investigate practical finite-blocklength classical-quantum channel coding over the quantum amplitude damping channel (ADC), aiming to transmit classical information reliably through quantum outputs. Our findings indicate that for any finite blocklength, a naive (uncoded) approach fails to offer any advantage over the ADC. Instead, sophisticated encoding strategies that leverage both classical error-correcting codes and quantum input states are crucial for realizing quantum performance gains at finite blocklengths.
Cite
@article{arxiv.2509.14852,
title = {On Finite-Blocklength Noisy Classical-Quantum Channel Coding With Amplitude Damping Errors},
author = {Tamás Havas and Hsuan-Yin Lin and Eirik Rosnes and Ching-Yi Lai},
journal= {arXiv preprint arXiv:2509.14852},
year = {2025}
}
Comments
Paper accepted for presentation at the 2025 IEEE Information Theory Workshop (ITW 2025). Final conference version