# Alice & Bob: RSA-2048 could fall to 23,000 cat qubits, on paper

- By: Logon News Newsroom
- 2026-11-03T09:50:00.000Z
- Produced with artificial intelligence under human editorial supervision.

## Excerpt

Researchers at French start-up Alice & Bob estimate that a quantum computer with about 22,600 physical cat qubits could factor an RSA-2048 key in roughly three days. It is a company-authored resource estimate in a preprint, not a demonstration, but it adds weight to calls to start migrating to post-quantum cryptography.

## Read the full story

https://logonnews.com/en/2026/11/03/alice-bob-rsa-2048-cat-qubits-estimate/

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