Compare · Quantum computers
Willow vs System Model H2
RANKED BY PHYSICAL QUBITS ON AN OPERATIONAL SYSTEM
#8 VS #11
CHECKED 06 SEPT 2026
Side by side
Verdict
Willow ranks #8 of 16 on Physical qubits on an operational system (105); System Model H2 ranks #11 (56).
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 11 of 16
Physical qubits on an operational system
56
MakerQuantinuum
Date2024
Verified04 Sept 2026
Evidence
Quantinuum System Model H2 product page: 56 fully-connected qubits, two-qubit gate fidelity >99.9%, single-qubit gate fidelity >99.99%, quantum volume 33,554,432 (2^25). Commercially available via Quantinuum subscription and Microsoft Azure.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