Author

C. Gidney

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Preprint Oct 2026

Low-Overhead Quantum Error Correction with Boundary-Connected Planar Modules

Realizing practical quantum computers requires quantum error correction, but the most widely implemented approach, the planar surface code, demands a substantial physical qubit overhead. Here, we demonstrate that partitioning quantum processors into manageable, flat modules with non-local inter-module connections provi...

O. Higgott, Hasan Sayginel, F. Heras et al. · 0 citations

Preprint Sep 2026

Quantum circuit compilation with constant overhead

Compiling a continuous gate set to a discrete universal gate set generally incurs an overhead. A circuit composed of $G$ arbitrary one- and two-qubit gates can be $\epsilon$-approximated by a sequence of gates from $\{H,T,\mathrm{CNOT}\}$ by replacing each original gate by a sequence of $O(\log(G/\epsilon))$ elementary...

Chen-Yi Zhang, Xin-Yu Tan, Robin Kothari et al. · 0 citations