Quantum Purification for Amplitude Damping Noise
Abstract
Noise poses a fundamental challenge to quantum information processing, with amplitude-damping (AD) noise being particularly detrimental. Preserving high-fidelity quantum systems therefore relies critically on effective error correction and purification methods. In this work, we introduce a novel approach for mitigating AD noise that can be applied to both state and channel purification. Our method achieves a substantial enhancement in the fidelity of affected states or channels while maintaining a low resource overhead, requiring only one or two ancilla qubits in combination with two Clifford gates, and exhibits a relatively high success probability. This approach provides a practical and scalable framework for addressing AD noise in realistic quantum systems.
Cite
@article{arxiv.2509.05709,
title = {Quantum Purification for Amplitude Damping Noise},
author = {Kai Wang and Zhen-Yang Peng},
journal= {arXiv preprint arXiv:2509.05709},
year = {2025}
}