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Author

Alexander Cowtan

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Preprint Sep 2026

Near-optimal high-rate surgery from linear PCPPs

A central problem for surgery with quantum Low-Density Parity Check (LDPC) codes is the design of auxiliary systems which measure large sets of logical operators in parallel, while preserving sparsity and fault distance. We introduce a very general method for designing surgery gadgets which are'high rate', meaning that...

Alexander Cowtan, Benjamin Ide · 0 citations

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