The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes
2026/02/12 by Paul Webster, Lucas Berent, Omprakash Chandra +5 · 11 voices · 16 citations
#quant-ph
paper · pdf
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 fewer than one hundred thousand physical qubits, given a physical error rate of 10-3, code cycle time of 1 microsecond and a reaction time of 10 microseconds. We thereby demonstrate the feasibility of utility-scale quantum computing with an order of magnitude fewer physical qubits than has previously been believed necessary.
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- I've been asked several times to comment on arxiv.org/abs/2602.11457, which claims to reduce the qubit cost of factoring by 10x. My take is that they demand a *lot* more qubit connectivity for that nu [bsky, 24 points, 1 comments]
- amazing new benchmark for quantum computing. Now we just need to figure out how to decode qLDPC codes very well! arxiv.org/abs/2602.11457 [bsky, 8 points, 2 comments]
- And then another end-to-end architecture, this time looking at how the best way to use qLDPC codes for the one big application we all know about: breaking current crypto systems. The team at Iceberg Q [bsky, 6 points, 1 comments]
- Reducing the cost of breaking RSA-2048 to 100000 physical qubits [hn, 3 points, 0 comments]
- #arXiv The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes arxiv.org/abs/2602.11457 #ShtetlOptimized On reducing the cost of breaking [bsky, 1 points, 0 comments]
- Refs arxiv.org/abs/2602.11457 arxiv.org/abs/2603.28627 arxiv.org/abs/2602.14273 [bsky, 0 points, 1 comments]
- The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes https://arxiv.org/abs/2602.11457 [bsky, 0 points, 0 comments]
- If anyone is wondering why I said I think quantum computers will be able to break classic crypto by 2040, and we should therefore adopt post quantum crypt by 2030, read this: arxiv.org/abs/2602.11457 [bsky, 0 points, 0 comments]
- #arXiv The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes arxiv.org/abs/2602.11457 #ShtetlOptimized On reducing the cost of breaking [mastodon, 0 points, 0 comments]
- I just have to ask ... is this the pinnacle of papers breaking RSA with a QC for Q1 2026? arxiv.org/pdf/2602.11457 [bsky, 0 points, 0 comments]
- [2602.11457] The Pinnacle Architecture: Reducing the cost of breaking RSA-2048 to 100 000 physical qubits using quantum LDPC codes arxiv.org/abs/2602.11457 [bsky, 0 points, 0 comments]
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