Authors
Craig Gidney, Michael Newman, Matt McEwen
Publication date
2022/9/21
Journal
Quantum
Volume
6
Pages
813
Publisher
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
Description
We improve the planar honeycomb code by describing boundaries that need no additional physical connectivity, and by optimizing the shape of the qubit patch. We then benchmark the code using Monte Carlo sampling to estimate logical error rates and derive metrics including thresholds, lambdas, and teraquop qubit counts. We determine that the planar honeycomb code can create a logical qubit with one-in-a-trillion logical error rates using 7000 physical qubits at a 0.1% gate-level error rate (or 900 physical qubits given native two-qubit parity measurements). Our results cement the honeycomb code as a promising candidate for two-dimensional qubit architectures with sparse connectivity.
Total citations
2022202320246288
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