Quantum Hardware Database

IBM · 2023

Superconducting (transmon qubits)

IBM Condor was the world's first quantum processor to exceed 1,000 qubits at the time of its announcement in late 2023. Part of IBM's aggressive processor roadmap, it represents a significant milestone in scaling superconducting qubit systems while maintaining reasonable gate fidelity across the full device.

IBM · 2023

Superconducting (fixed-frequency transmon qubits)

Released alongside Condor, IBM Heron represents IBM's highest-performance processor at the time — prioritizing gate fidelity over raw qubit count. Heron introduced tunable couplers between qubits, significantly reducing crosstalk (unwanted interactions between neighboring qubits) compared to previous IBM designs.

Google (Google Quantum AI) · 2019

Superconducting (transmon qubits)

Google Sycamore achieved global recognition in 2019 when Google claimed it had achieved 'quantum supremacy' — completing a random circuit sampling task in 200 seconds that Google estimated would take the world's best supercomputer approximately 10,000 years. The claim was later contested, but Sycamore remains a landmark in quantum computing history.

IonQ · 2023

Trapped-ion (ytterbium ions)

IonQ Forte is IonQ's flagship trapped-ion quantum computer, offering 32 algorithmic qubits with all-to-all connectivity and significantly longer coherence times than superconducting alternatives. Trapped-ion systems like Forte are often seen as complementary to superconducting approaches, excelling in fidelity and coherence at the cost of slower gate speeds.

Rigetti Computing · 2023

Superconducting (tunable transmon qubits)

The Rigetti Novera is notable for being the first commercially purchasable quantum processing unit (QPU) — allowing research institutions and companies to own and operate a quantum processor on-premise rather than relying solely on cloud access. With 9 qubits, it's designed for research, education, and quantum error correction experimentation.

IonQ · 2025

Trapped-ion (ytterbium ions)

IonQ Tempo is IonQ's next-generation trapped-ion system following Forte, designed to push algorithmic qubit counts higher while maintaining the high gate fidelity and all-to-all connectivity that distinguishes trapped-ion architectures from superconducting alternatives.

Google (Google Quantum AI) · 2024

Superconducting (transmon qubits)

Google Willow succeeded Sycamore as Google's flagship superconducting processor, notably demonstrating that logical error rates can decrease as more physical qubits are added to a surface code — a long-sought milestone suggesting quantum error correction can scale as theory predicts.

IBM · 2021

Superconducting (fixed-frequency transmon qubits)

IBM Eagle was the first quantum processor to exceed 100 qubits, released as part of IBM's published hardware roadmap. It marked a significant scaling milestone and validated the heavy-hex lattice architecture that IBM continued to use in later, larger processors like Condor.

IBM · 2022

Superconducting (fixed-frequency transmon qubits)

IBM Osprey more than tripled the qubit count of the previous Eagle processor, serving as an intermediate scaling step on the path to Condor's 1,000+ qubit milestone, and helping IBM validate manufacturing processes needed for even larger future devices.

Quantinuum · 2023

Trapped-ion (ytterbium ions)

Quantinuum's H2 processor (formed from the 2021 merger of Honeywell Quantum Solutions and Cambridge Quantum) has repeatedly set records for two-qubit gate fidelity, using a quantum charge-coupled device architecture that physically shuttles ions between trap zones to achieve flexible, high-quality connectivity.

Pasqal · 2023

Neutral atom (rubidium atoms held in optical tweezers)

Pasqal's Fresnel processor uses neutral atoms held in place by precisely focused laser beams ('optical tweezers'), offering a uniquely reconfigurable architecture where the physical arrangement of qubits — and therefore their connectivity — can be programmed for each specific problem.

Xanadu · 2022

Photonic (squeezed light states, continuous-variable)

Xanadu Borealis was the first photonic quantum computer to demonstrate a quantum advantage claim that was accessible over the cloud to the public, using squeezed light and a technique called Gaussian Boson Sampling, distinguishing it from the more common qubit-based architectures covered elsewhere on this site.

D-Wave Systems · 2024

Superconducting flux qubits (quantum annealer)

D-Wave Advantage2 is the latest generation of D-Wave's specialized quantum annealing hardware, a fundamentally different architecture from the gate-based processors that dominate this database, purpose-built for solving optimization problems via quantum annealing rather than running general quantum algorithms.

Origin Quantum · 2024

Superconducting (transmon qubits)

Origin Wukong is a flagship superconducting quantum processor developed by China's Origin Quantum, representing one of the most prominent domestically developed quantum computing platforms in China, with public cloud access for running quantum circuits.