arXiv Machine Learning By Nico Meyer, Christopher Mutschler, Andreas Maier, Daniel D. Scherer

Learning Encodings by Maximizing State Distinguishability: Variational Quantum Error Correction

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The paper introduces a new objective function for designing quantum error correction codes that maximizes the distinguishability of quantum states after a noise channel. This approach, called variational quantum error correction (VarQEC), uses a distinguishability loss function as a machine learning objective to discover encoding circuits tailored to specific noise characteristics. The authors demonstrate that VarQEC produces resource‑efficient codes that outperform standard codes and provide proof‑of‑concept experiments on IBM and IQM hardware.

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