Compare · Quantum computers
Willow vs Cepheus-1-36Q
RANKED BY PHYSICAL QUBITS ON AN OPERATIONAL SYSTEM
#8 VS #12
CHECKED 06 SEPT 2026
Side by side
Verdict
Willow ranks #8 of 16 on Physical qubits on an operational system (105); Cepheus-1-36Q ranks #12 (36).
Rank 08 of 16 · leads
Physical qubits on an operational system
105
MakerGoogle Quantum AI
Date2024
Verified04 Sept 2026
Evidence
Google Willow announcement and spec sheet: 105 qubits. Spec sheet 2Q gate error 0.33% +/- 0.18% (CZ, chip 1) and 0.14% +/- 0.052% (iswap-like, chip 2).Rank 12 of 16
Physical qubits on an operational system
36
MakerRigetti
Date2025
Verified04 Sept 2026
Evidence
Rigetti What we build page: Cepheus-1-36Q deployed 12 August 2025, 36 qubits, two-qubit gate fidelity 99.5% (CZ). Tied on qubit count with IonQ Forte.Try another pair
Source Vendor product pages and official announcements (Atom Computing AC1000, QuEra Gemini and Aquila, IBM Quantum hardware, Pasqal Orion Gamma…
Last checked 06 Sept 2026