QND multi-Z measurements enable all operations for bias-tailored codes including XZZX surface codes and repetition codes, with simulated phase-flip thresholds of ~1.25% and ~2.3% respectively and up to 6x qubit savings at high bias.
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Quantum non-demolition measurements as a practical primitive for fault-tolerant computation against biased noise
QND multi-Z measurements enable all operations for bias-tailored codes including XZZX surface codes and repetition codes, with simulated phase-flip thresholds of ~1.25% and ~2.3% respectively and up to 6x qubit savings at high bias.