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Seed
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Quantum Computing
Quantum Computing
Quantum Computing
Companies
- 01
InfleqtionInfleqtion develops neutral-atom quantum computers and quantum-enabled products including atomic clocks and RF sensors. - 02
IonQIonQ builds trapped-ion quantum computers with industry-leading gate fidelities and offers cloud access through AWS, Azure, and Google Cloud. - 03
PsiQuantumPsiQuantum is building a fault-tolerant photonic quantum computer leveraging existing semiconductor manufacturing infrastructure. - 04
QuantinuumQuantinuum builds trapped-ion quantum computers and quantum software platforms for optimization, chemistry simulation, and quantum error correction research across enterprise and government sectors. - 05
ClassiqClassiq provides a software platform for designing, optimizing, and executing quantum algorithms at scale. - 06
Atom ComputingAtom Computing develops neutral-atom quantum computers using optical tweezers to trap and manipulate individual atoms. - 07
NvidiaNvidia designs GPUs and AI accelerators that power the vast majority of frontier model training and inference workloads. - 08
XanaduXanadu builds photonic quantum computers and develops PennyLane, an open-source quantum machine learning framework. - 09
QuEra ComputingQuEra builds neutral-atom quantum computers based on research from Harvard and MIT, focusing on optimization problems. - 10
SandboxAQSandboxAQ develops enterprise software for quantum and AI-based solutions in cryptography, sensing, and simulation. - 11
DiraqDiraq develops silicon-based quantum processors using CMOS-compatible fabrication for scalable quantum computing. - 12
IBM QuantumIBM Quantum develops superconducting quantum computers and offers cloud access through the IBM Quantum Network. - 13
Universal QuantumUniversal Quantum develops trapped-ion quantum computers with a modular architecture using electric field shuttling. - 14
Rigetti ComputingRigetti designs and manufactures superconducting quantum processors and operates a full-stack quantum computing platform. - 15
D-Wave QuantumD-Wave commercializes quantum annealing systems optimized for combinatorial optimization problems. - 16
PasqalPasqal develops neutral-atom quantum processors using optical tweezers to arrange rubidium atoms. The company serves HPC centers, cloud platforms, and enterprise partners pursuing quantum simulation and optimization. - 17
Quantum MachinesQuantum Machines builds control and orchestration systems for quantum computers, enabling real-time classical-quantum processing. - 18
QuandelaQuandela manufactures photonic quantum computers and single-photon sources for quantum computing and communication. - 19
Terra QuantumTerra Quantum develops quantum algorithms and hybrid quantum-classical software for optimization, simulation, and cryptography. - 20
Google Quantum AIGoogle Quantum AI builds superconducting quantum processors and achieved quantum supremacy in 2019 with its Sycamore chip. - 21
IQMIQM designs and manufactures superconducting quantum computers for research institutions and data centers. - 22
QuantWareQuantWare manufactures superconducting quantum processors as off-the-shelf components for quantum computing research and development. - 23
Nord QuantiqueNord Quantique develops superconducting qubits with built-in error correction using bosonic codes. - 24
QbloxQblox manufactures control electronics for quantum computing, offering modular hardware for qubit control and readout. - 25
Silicon Quantum ComputingSilicon Quantum Computing develops silicon-based quantum processors using phosphorus donor atoms in silicon. - 26
Q-CTRLQ-CTRL builds quantum control infrastructure software to reduce errors and improve performance across quantum hardware platforms. - 27
Alice & BobAlice & Bob develops cat qubits, a novel superconducting architecture designed to reduce error correction overhead. - 28
RiverlaneRiverlane develops quantum error correction software and hardware decoders to enable fault-tolerant quantum computing. - 29
QC WareQC Ware provides enterprise quantum software focused on optimization, machine learning, and chemistry simulation. - 30
QilimanjaroQilimanjaro provides quantum computing services and develops application-specific quantum processors for optimization problems. - 31
PhotonicPhotonic builds silicon-spin quantum computers that integrate qubits with photonic interconnects for networking and scalability. - 32
Multiverse ComputingMultiverse Computing develops quantum software and AI compression technology for enterprise applications in portfolio optimization, risk modeling, and edge deployment. - 33
Oxford Quantum CircuitsOxford Quantum Circuits builds superconducting quantum computers with proprietary Coaxmon technology and offers cloud access. - 34
OratomicOratomic is a quantum computing company founded in 2025 in Pasadena, United States, working in neutral-atom qubits.
Tracked
AnderonAnderon is a quantum-computing component supplier headquartered in Albany, United States, founded in 2026. It is listed under the ticker IBM as a division of a public parent.
ORCA ComputingORCA Computing develops time-bin encoded photonic quantum computers designed for easy integration with existing telecom infrastructure.
QphoXQphoX develops quantum modems to convert microwave and optical photons, enabling long-distance quantum communication between superconducting qubits.
QryptQrypt develops quantum-secure encryption solutions including quantum random number generation and post-quantum key distribution.
Quantum BrillianceQuantum Brilliance develops room-temperature quantum computers using nitrogen-vacancy centers in synthetic diamonds.
SEEQCSEEQC builds chip-based superconducting quantum computers that move qubit readout, control, and error correction onto cryogenic Single Flux Quantum (SFQ) digital chips co-located with the qubits.
Microsoft QuantumMicrosoft Quantum, a division of Microsoft, builds quantum hardware and cloud tools for researchers and enterprises. Its offerings include the Majorana 1 topological processor, Azure Quantum, and Azure Quantum Elements.
Nu QuantumNu Quantum builds quantum networking hardware that links quantum processors into distributed computing systems.
Origin QuantumOrigin Quantum builds superconducting quantum computers in Hefei, China, along with the chips, control systems, dilution refrigerators, operating system and cloud platform that run them.
Quantum ArtQuantum Art builds trapped-ion quantum computers with a reconfigurable multi-core architecture and multi-qubit gates, sold through a cloud service and as on-premises systems for optimization and simulation work.
Quantum Computing Inc.Quantum Computing Inc. (QCi) builds room-temperature photonic machines for optimization and machine learning and runs a thin-film lithium niobate chip foundry, selling photonic components and chip packaging to government, research and commercial customers.
Quantum MotionQuantum Motion builds full-stack quantum computers from silicon spin qubits made on standard 300mm CMOS wafers, designed to fit in data-center racks and be mass-produced on existing chip foundry lines.
No roster changes this week. The roster is re-evaluated quarterly; read the methodology in the disclosures.
