面向容错量子计算的极低成本魔法态制备 Extremely Low-Cost Magic State Preparation toward Fault-Tolerant Quantum Computing
发表于Published in arXivarXiv, 2026
本文提出一种低成本魔法态制备方案，将稳定子生成元与旗标测量线路联合设计，在 15 比特量子里德-穆勒码中制备逻辑正态、施加横向 T 门，并通过规范固定将同一寄存器转换为七比特 Steane 码。论文分析破坏性错误检测与后选择下的逻辑错误抑制；未测量输出块的保真度需要另行分析。
This paper introduces a low-cost magic-state preparation protocol that co-designs stabilizer generators and flag-measurement circuits. It prepares a logical plus state in the 15-qubit quantum Reed-Muller code, applies a transversal T gate, and gauge-fixes the same register into the seven-qubit Steane code. The analysis concerns logical-error suppression under destructive error detection and postselection; the fidelity of an unmeasured output block requires separate analysis.
推荐引用：Recommended citation: Jianshuo Gao, Xiao Yuan, Yuan Yao. "Extremely Low-Cost Magic State Preparation toward Fault-Tolerant Quantum Computing." arXiv:2609.12698, 2026.
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