Ranked by headcount · 25 of 40 on the roster
IonQ builds trapped-ion quantum computers with industry-leading gate fidelities and offers cloud access through AWS, Azure, and Google Cloud.
PsiQuantum is building a fault-tolerant photonic quantum computer leveraging existing semiconductor manufacturing infrastructure.
Quantinuum, formed from the merger of Honeywell Quantum Solutions and Cambridge Quantum, builds trapped-ion systems and quantum software.
Alice & Bob develops cat qubits, a novel superconducting architecture designed to reduce error correction overhead.
D-Wave commercializes quantum annealing systems optimized for combinatorial optimization problems.
IQM designs and manufactures superconducting quantum computers for research institutions and data centers.
Multiverse Computing provides quantum software solutions for finance, energy, and manufacturing optimization problems.
Pasqal develops neutral-atom quantum processors and targets optimization and simulation applications.
Q-CTRL builds quantum control infrastructure software to reduce errors and improve performance across quantum hardware platforms.
Quantum Machines builds control and orchestration systems for quantum computers, enabling real-time classical-quantum processing.
SandboxAQ develops enterprise software for quantum and AI-based solutions in cryptography, sensing, and simulation.
Atom Computing develops neutral-atom quantum computers using optical tweezers to trap and manipulate individual atoms.
Classiq provides a software platform for designing, optimizing, and executing quantum algorithms at scale.
Diraq develops silicon-based quantum processors using CMOS-compatible fabrication for scalable quantum computing.
Infleqtion develops neutral-atom quantum computers and quantum-enabled products including atomic clocks and RF sensors.
Nord Quantique develops superconducting qubits with built-in error correction using bosonic codes.
ORCA Computing develops time-bin encoded photonic quantum computers designed for easy integration with existing telecom infrastructure.
Oxford Quantum Circuits builds superconducting quantum computers with proprietary Coaxmon technology and offers cloud access.
Photonic builds silicon-spin quantum computers that integrate qubits with photonic interconnects for networking and scalability.
Qblox manufactures control electronics for quantum computing, offering modular hardware for qubit control and readout.
Quandela manufactures photonic quantum computers and single-photon sources for quantum computing and communication.
Quantum Brilliance develops room-temperature quantum computers using nitrogen-vacancy centers in synthetic diamonds.
QuantWare manufactures superconducting quantum processors as off-the-shelf components for quantum computing research and development.
QuEra builds neutral-atom quantum computers based on research from Harvard and MIT, focusing on optimization problems.
Rigetti designs and manufactures superconducting quantum processors and operates a full-stack quantum computing platform.
