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Qldpc Advanced Quantum Codes Quantum Compilation Routing Architecture

The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes

arXiv
Authors: Paul Webster, Lucas Berent, Omprakash Chandra, Evan T. Hockings, Nouédyn Baspin, Felix Thomsen, Samuel C. Smith, Lawrence Z. Cohen

Year

2026

Paper ID

94

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

The realisation of utility-scale quantum computing inextricably depends on the design of practical, low-overhead fault-tolerant architectures. We introduce the Pinnacle Architecture, which uses quantum low-density parity check (QLDPC) codes to allow for universal, fault-tolerant quantum computation with a spacetime overhead significantly smaller than that of any competing architecture. With this architecture, we show that 2048-bit RSA integers can be factored with less than one hundred thousand physical qubits, given a physical error rate of 10-3, code cycle time of 1 \textmu s and a reaction time of 10 \textmu s. We thereby demonstrate the feasibility of utility-scale quantum computing with an order of magnitude fewer physical qubits than has previously been believed necessary.

Why This Paper Matters

  • This paper contributes to the Quantum Compilation, Routing & Architecture research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • The realisation of utility-scale quantum computing inextricably depends on the design of practical, low-overhead fault-tolerant architectures.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2602.11457 [2] arXiv https://arxiv.org/abs/2602.11457 [3] Publisher https://arxiv.org/abs/2602.11457

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