Circuit-aware protection against burst errors in lattice surgery

arXiv:2611.14583v1 Announce Type: new Abstract: Large-scale quantum computing will require logical operations protected against high-energy impacts that disturb many superconducting qubits at once. Gap engineering suppresses relaxation induced by these impacts, but protecting only a subset of qubits requires choosing where that protection is placed. During lattice surgery, measurements change as patches merge and split, exposing different ancillas and temporal boundaries to burst errors. Here we compare three static protection layouts for a simulated lattice-surgery CNOT, matching the numbers of protected ancillas and the X:Z check-type splits.