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The Pinnacle Architecture with fixed connectivity of degree eight
Abstract
We show how the Pinnacle architecture can be adapted to be compatible with superconducting qubits, where the connectivity between qubits must be fixed at fabrication. Specifically, we present a modified instantiation of the architecture that has fixed connectivity degree of eight. With this instantiation, we show that a 2048-bit RSA integer can be factored in one month with approximately 120 000 physical qubits, given a physical error rate of 10−3, code cycle time of 1 microsecond and reaction time of 10 microseconds.
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BibTeX
@misc{webster2026pinnacle,
title = {{The Pinnacle Architecture with fixed connectivity of degree eight}},
author = {Paul Webster and Tom Peham and Lawrence Z. Cohen},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.21249},
eprint = {2609.21249},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.21249},
}
RIS
TY - UNPB
TI - The Pinnacle Architecture with fixed connectivity of degree eight
AU - Paul Webster
AU - Tom Peham
AU - Lawrence Z. Cohen
PY - 2026
DA - 2026/09/18
PB - arXiv
DO - 10.48550/arxiv.2609.21249
UR - https://arxiv.org/abs/2609.21249
AB - We show how the Pinnacle architecture can be adapted to be compatible with superconducting qubits, where the connectivity between qubits must be fixed at fabrication. Specifically, we present a modified instantiation of the architecture that has fixed connectivity degree of eight. With this instantiation, we show that a 2048-bit RSA integer can be factored in one month with approximately 120 000 physical qubits, given a physical error rate of 10^−3, code cycle time of 1 microsecond and reaction time of 10 microseconds.
ER -