Qubit Tracker

Zuchongzhi 3.0

Zuchongzhi 3.0 in the Qubit Tracker: every value read on the maker's own pages, with its day.

Announced: Not confirmed: two readings disagree: 2024-12-16 and 2025-03-03
Modality: Superconducting — arxiv.org, read 16 October 2026
Physical qubits: 105 qubits — arxiv.org, read 16 October 2026
Logical qubits: Not confirmed: The cited maker paper reports physical qubits and experiments, but does not report a demonstrated logical-qubit count or identify a logical-qubit code for such a count.
Two-qubit gate fidelity: Not confirmed: The maker reports a two-qubit gate fidelity of 99.62% (also described as parallel), but does not name the required statistic—median, average, or best. Its average Pauli error is an error rate, not a printed fidelity, so it is not converted.
One-qubit gate fidelity: Not confirmed: The maker reports a single-qubit gate fidelity of 99.90% (also described as parallel), but does not name the required statistic—median, average, or best. Its average Pauli error is an error rate, not a printed fidelity, so it is not converted.
The maker’s own metric: Not confirmed: its line was not found on its page, and a second reading did not confirm it
Access: Research only — arxiv.org, read 16 October 2026
Status: Announced — arxiv.org, read 16 October 2026

Sources