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Han-Zhang Zhao

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Preprint Oct 2026

Petz Recovery through a Single Polar Transformation for Approximate Quantum Error Correction

The Petz recovery map provides a near optimal decoder for approximate quantum error correction, but its inverse square-root normalization complicates circuit implementation. We use the polar structure of the Petz recovery isometry to implement recovery through a single quantum singular value transformation (QSVT). We g...

Han-Zhang Zhao, Sheng-Long Xu · 0 citations

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