Author

Teck Seng Koh

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Preprint Aug 2026

Towards fault-tolerance with universal phase-error-transparent gates for high-spin cat codes

This work constructs a universal logical gate set that is error-transparent (ET) to phase errors, and shows how logical measurement and recovery can be constructed from ET operations, and explains why state-preparation cannot be made ET.

K. Onggadinata, Si Yan Koh, Arghya Maity et al. · 0 citations

Preprint Aug 2026

Exact Tradeoff Between Quantum Error Correction and Quantum Darwinism: An Information-Theoretic No-Go Theorem

Quantum error correction (QEC) and Quantum Darwinism describe opposing consequences of system-environment interactions: QEC seeks to preserve logical quantum information, whereas Quantum Darwinism explains the emergence of objective classical information through its proliferation into the environment. Despite their com...

Arghya Maity, K. Onggadinata, Teck Seng Koh · 0 citations