Quantum computers need just 10,000 qubits — not the millions we assumed — to break the world's most secure encryption algorithms
By Keumars Afifi
Published on March 31, 2026.
New research has revealed that quantum computers can break the world's most secure encryption algorithms with just 10,000 qubits per logical qubit, making it possible to solve these algorithms with fewer physical qubits. This could leave sensitive data, like banking information and private messages, potentially vulnerable to interception. The study suggests that a quantum computer with 26,000 fewer qubits could take as little as seven months to crack RSA-2048 encryption, the industry encryption standard used to protect most digital certificates on the internet. The shift from needing millions of qubits to just tens of thousands is due to improvements in the field of (QEC) and the increased robustness of neutral-atom quantum computers. Neaseatom quantum machines are powered by individual, charge-neutral atoms held in suspension by focused laser beams and cooled to near absolute zero.
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