Qubit Tracker

Cepheus-1-108Q

Cepheus-1-108Q in the Qubit Tracker: every value read on the maker's own pages, with its day.

In inglese

Announced: Not confirmed: two readings disagree: 2026-01-09 and 2026-04-07
Modality: Superconducting — investors.rigetti.com, read 16 October 2026
Physical qubits: 108 qubits — www.rigetti.com, read 16 October 2026
Logical qubits: Not confirmed: The cited Rigetti system pages do not print a demonstrated logical-qubit count together with an error-correction code and paper.
Two-qubit gate fidelity: 98.72% — www.rigetti.com, read 16 October 2026
One-qubit gate fidelity: Not confirmed: two readings disagree: 99.86 and 99.85
The maker’s own metric: {"name":"T1 Lifetime","value":28}, {"name":"T2 Lifetime","value":12} — www.rigetti.com, read 16 October 2026
Access: Cloud — investors.rigetti.com, read 16 October 2026
Status: Available — investors.rigetti.com, read 16 October 2026

Sources

Quantum Computing | Rigetti Computing (read 16 October 2026)
Building scalable, innovative quantum systems | Rigetti Computing (read 16 October 2026)
Rigetti Computing Provides Update on 108-Qubit System (read 16 October 2026)
Rigetti Announces General Availability of 108-Qubit System (read 16 October 2026)
Rigetti Computing Reports First Quarter 2026 Financial Results (read 16 October 2026)