Tracked metric

Max physical qubits

The largest number of physical qubits on a single processor announced to date. Raw count — says nothing about quality.

6,100Reached · Sep 2025 ≈1,000,000physical qubits est. for RSA-2048 (with error correction)

View on the tracker

256 qubits May 2026 IonQ Press · 2026-05
98 qubits Nov 2025 Quantinuum Press · 2025-11
6100 qubits Sep 2025 Caltech Press · 2025-09
105 qubits Dec 2024 Google Quantum AI Press · 2024-12
84 qubits Dec 2024 Rigetti Computing Press · 2024-12
1121 qubits Dec 2023 IBM Database · 2025
1180 qubits Oct 2023 Atom Computing Press · 2023-10
433 qubits Nov 2022 IBM Database · 2025
127 qubits Nov 2021 IBM Database · 2025
53 qubits Oct 2019 Google Quantum AI Paper · 2019-10

More on this

Analysis as of Feb 9, 2026

How close is a code-breaking quantum computer?

by Frontier Milestones

Logical-qubit records are climbing fast, but breaking RSA-2048 needs thousands of logical (millions of physical) qubits with low error rates held for hours. Our read: real, but not imminent. (Our opinion, not investment advice.)

Our read — labelled opinion, not investment advice.

Quantum Computing

Read