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quant-ph2026
Single-shot state preparation thresholds in quantum LDPC codes: soundness, confinement, and statistical mechanics
Yuanchen Zhao, Yi Yuan, Zhengyi Han +1
Single-shot error correction does not by itself establish equally direct and robust logical-state initialization. We study preparation of CSS quantum low-density parity-check code…
quant-ph2026
Zeno-Enhanced Probabilistic Error Cancellation with Quantum Error Detection Codes
Yi Yuan, Yuanchen Zhao, Dong E. Liu
Probabilistic error cancellation (PEC) is unbiased but suffers exponential sampling overhead set by noise-weighted circuit volume, whereas quantum error-detecting codes (QEDCs) rem…