Ranked by oldest founded · 25 of 40 on the roster
D-Wave commercializes quantum annealing systems optimized for combinatorial optimization problems.
Infleqtion develops neutral-atom quantum computers and quantum-enabled products including atomic clocks and RF sensors.
Google Quantum AI builds superconducting quantum processors and achieved quantum supremacy in 2019 with its Sycamore chip.
Rigetti designs and manufactures superconducting quantum processors and operates a full-stack quantum computing platform.
QC Ware provides enterprise quantum software focused on optimization, machine learning, and chemistry simulation.
IonQ builds trapped-ion quantum computers with industry-leading gate fidelities and offers cloud access through AWS, Azure, and Google Cloud.
IBM Quantum develops superconducting quantum computers and offers cloud access through the IBM Quantum Network.
PsiQuantum is building a fault-tolerant photonic quantum computer leveraging existing semiconductor manufacturing infrastructure.
Riverlane develops quantum error correction software and hardware decoders to enable fault-tolerant quantum computing.
Xanadu builds photonic quantum computers and develops PennyLane, an open-source quantum machine learning framework.
Oxford Quantum Circuits builds superconducting quantum computers with proprietary Coaxmon technology and offers cloud access.
Q-CTRL builds quantum control infrastructure software to reduce errors and improve performance across quantum hardware platforms.
Quandela manufactures photonic quantum computers and single-photon sources for quantum computing and communication.
Silicon Quantum Computing develops silicon-based quantum processors using phosphorus donor atoms in silicon.
Atom Computing develops neutral-atom quantum computers using optical tweezers to trap and manipulate individual atoms.
Bleximo develops superconducting quantum processors optimized for quantum simulation and chemistry applications.
IQM designs and manufactures superconducting quantum computers for research institutions and data centers.
Qrypt develops quantum-secure encryption solutions including quantum random number generation and post-quantum key distribution.
Quantum Machines builds control and orchestration systems for quantum computers, enabling real-time classical-quantum processing.
QuEra builds neutral-atom quantum computers based on research from Harvard and MIT, focusing on optimization problems.
Strangeworks operates a cloud platform aggregating access to multiple quantum hardware providers and development tools.
Universal Quantum develops trapped-ion quantum computers with a modular architecture using electric field shuttling.
Agnostiq develops Covalent, an open-source workflow orchestration platform for quantum and high-performance computing.
Multiverse Computing provides quantum software solutions for finance, energy, and manufacturing optimization problems.
ORCA Computing develops time-bin encoded photonic quantum computers designed for easy integration with existing telecom infrastructure.
