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Satoshi Yoshida, Craig Gidney, Matt McEwen, Adam Zalcman (Oct 02 2025).
Abstract: We present two new types of syndrome extraction circuits for the color code. Our first construction, which after [M. McEwen, D. Bacon, and C. Gidney, Quantum 7, 1172 (2023)] we call the semi-wiggling color code, promises to mitigate leakage errors by periodically interchanging the roles of bulk data and measurement qubits. The second construction reduces circuit depth relative to [C. Gidney and C. Jones, arXiv:2312.08813 (2023)] by employing the CXSWAP gate instead of CNOT. This optimization leads to 10%\sim 10\% improvement in teraquop footprint under the uniform error model with the physical error rate p=0.1%p=0.1\%.

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