Quantum Hardware Database

IBM · 2023

Superconducting (fixed-frequency transmon qubits)

IBM Condor is a 1,121-qubit superconducting chip unveiled in December 2023 as the first quantum processor to pass the 1,000-qubit mark. It was built to prove that very large chips can be fabricated and wired, not to be IBM's best-performing machine.

IBM · 2023 (r1); 2024 (r2); 2025 (r3)

Superconducting (fixed-frequency transmon qubits with tunable couplers)

IBM Heron is IBM's highest-performing quantum processor family. The first version had 133 qubits (December 2023), and later revisions r2 and r3 have 156. Its tunable couplers sharply reduce crosstalk, and it is the building block of IBM's Quantum System Two.

Google (Google Quantum AI) · 2019

Superconducting (transmon qubits with tunable couplers)

Google Sycamore is the 53-qubit processor behind the 2019 'quantum supremacy' experiment, in which Google reported sampling a random circuit in about 200 seconds, a task it estimated would take a supercomputer 10,000 years. The claim was later challenged, but the experiment remains a landmark.

IonQ · 2023

Trapped ions (ytterbium-171)

IonQ Forte is a 36-qubit trapped-ion computer with all-to-all connectivity, rated at #AQ 36 (IonQ's algorithmic qubit metric). A rack-mountable version, Forte Enterprise, is sold for data-center deployment.

Rigetti Computing · 2023 (introduced December 2023; shipping from early 2024)

Superconducting (flux-tunable transmon qubits with tunable couplers)

Rigetti Novera is a 9-qubit superconducting quantum processing unit that customers buy and run on their own equipment. Priced from about 900,000 dollars when it launched, it is aimed at labs, universities, and companies that want hands-on hardware access.

IonQ · 2025 (development system); commercial availability listed for late 2026

Trapped ions (reported to use barium)

IonQ Tempo is the company's fifth-generation trapped-ion computer, designed around 100 qubits. A development system reached #AQ 64 in September 2025, three months early, and IonQ lists broad availability for late 2026.

Google (Google Quantum AI) · 2024

Superconducting (transmon qubits with tunable couplers)

Google Willow is a 105-qubit superconducting chip announced in December 2024. It showed that a logical qubit's error rate falls as the surface code is made bigger, the long-sought 'below threshold' result, and it ran a random-circuit-sampling task in under five minutes that Google estimated would take 10^25 years classically.

IBM · 2021

Superconducting (fixed-frequency transmon qubits)

IBM Eagle was the first quantum processor to exceed 100 qubits (November 2021). Its multi-level wiring let IBM place far more qubits on a chip, and a 2023 experiment on Eagle became one of the most discussed 'utility' results in the field.

IBM · 2022

Superconducting (fixed-frequency transmon qubits)

IBM Osprey, unveiled in November 2022, tripled Eagle's qubit count to 433. It introduced flexible cryogenic wiring that replaced bulky coaxial cables, a key step on the road to Condor and to larger modular systems.

Quantinuum · 2023 (32 qubits); upgraded to 56 qubits in 2024

Trapped ions (ytterbium and barium, QCCD architecture)

Quantinuum H2 is a 56-qubit trapped-ion computer with some of the highest gate fidelities ever published. It holds the record for quantum volume (33,554,432, or 2 to the 25th power, in September 2025) and has been used for landmark logical-qubit and random-circuit-sampling experiments.

Pasqal · 2023 (cloud availability expanded 2024 to 2025)

Neutral atoms (rubidium-87 in optical tweezers)

Pasqal Fresnel is a roughly 100-qubit neutral atom quantum processor that runs in analog mode, where the user programs the positions of atoms and the laser pulses acting on them. It is available through several cloud platforms and is part of Pasqal's Orion product family.

Xanadu · 2022

Photonic (squeezed light, continuous-variable; 216 squeezed modes)

Xanadu Borealis is a photonic quantum computer that performed Gaussian boson sampling on 216 squeezed modes in about 36 microseconds, a task Xanadu estimated would take the best classical methods over 9,000 years. It was the first programmable photonic advantage claim made available to the public over the cloud.

D-Wave Systems · 2025 (general availability May 20, 2025)

Superconducting flux qubits (quantum annealer)

D-Wave Advantage2 is the sixth generation of D-Wave's annealing quantum computer, with more than 4,400 qubits and over 40,000 couplers in the Zephyr topology. It became generally available on May 20, 2025 with 40% higher energy scale, twice the coherence, and 75% less noise than its predecessor.

Origin Quantum · 2024

Superconducting (flux-tunable transmon qubits with tunable couplers)

Origin Wukong is China's third-generation superconducting quantum computer, built around a 72-qubit chip with 126 tunable couplers and launched on January 6, 2024. It was made available to the public through Origin Quantum's cloud and attracted tens of millions of visits.

Alice & Bob · 2024

Superconducting cat qubit (bosonic qubit stabilized by two-photon dissipation)

Alice & Bob's Boson 4 is a cat qubit chip that held a quantum state against bit-flip errors for more than seven minutes, a record for any superconducting qubit at the time (2024). It was the first cat qubit that outside users could test on the cloud.

QuEra Computing · 2022

Neutral atoms (rubidium, Rydberg states)

QuEra Aquila is a 256-qubit neutral atom processor that runs analog Hamiltonian simulation on rubidium atoms. It became available to the public through Amazon Braket on November 1, 2022 and remains one of the most accessible quantum computers for researchers and students.

Diraq · 2025 to 2026 (research devices)

Silicon spin qubits (quantum-dot electron spins in isotopically enriched silicon, CMOS-compatible)

Diraq's silicon spin qubits, made with imec on standard 300 mm semiconductor equipment, exceeded 99% gate fidelity in a September 2025 Nature paper, and an eight-qubit array fabricated the same way was reported in 2026. The devices are research chips, not a commercial product.

RIKEN / Fujitsu · 2023 (64 qubits); 256-qubit successor announced in 2025

Superconducting transmon qubits

The 64-qubit superconducting computer built by RIKEN and Fujitsu went into service in October 2023 at the RIKEN RQC-Fujitsu Collaboration Center near Tokyo. It was the foundation for a 256-qubit machine announced in April 2025 and for a planned 1,000-qubit system in 2026.

NTT · 2021

Optical parametric oscillator pulses acting as Ising spins (not gate-model qubits)

NTT's coherent Ising machine (CIM) is an optical computer that uses 100,512 pulses of light circulating in a 5-kilometer fiber ring as artificial spins to solve optimization problems. Reported in Science Advances in 2021, it was the largest Ising machine of its kind and found good max-cut solutions about 1,000 times faster than simulated annealing on a CPU.

IQM · 2023 to 2024 (benchmarks February 2024; cloud access from May 2024)

Superconducting (flux-tunable transmon qubits with tunable couplers)

IQM Garnet is a 20-qubit superconducting quantum processor with a square-lattice layout, a median CZ gate fidelity of 99.51%, and genuine 20-qubit entanglement demonstrated in a GHZ-state test. It is available on Amazon Braket and IQM's own cloud and has been installed at customer sites.