Top Quantum Companies in United States (2026 Update)
Browse Quantum companies in United States with up-to-date profiles — funding rounds, investors, hiring, and expansion signals. Find recently funded and growing companies. Updated 2026.
What changed at these 48 companies recently?
We recorded 30 changes here in the last 180 days, including 8 product launches, 6 expansion moves, 4 awards, 3 funding events and 3 hiring moves. Each entry below carries the date we observed it, from public sources.
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IonQ
— Grant Received
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QuEra Computing Inc.
— New Feature Launched
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PsiQuantum
— Expansion Announced
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Rigetti Computing — New Product Launched
Showing 48 Companies
| Company | Location | Founded | Industry | Services | Target Customers | Business Model | Revenue Model | Founders | Employees | Funding Stage | |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
ApexQubit
ApexQubit is a biotechnology company that is harnessing… |
Berkeley, United Sta...
|
2018 |
B2B
Biotechnology
+6
|
— | — | — | — | — | 1 | Unknown |
|
|
Rigetti Computing
We are scientists, engineers, builders, and visionaries |
Berkeley, United Sta...
|
2013 |
AI
Big Data
+2
|
Quantum Processing Unit Manufacturing
Quantum Algorithm Development
+2
|
Quantum Researchers
Technological Innovators
+2
|
B2B
SaaS
+1
|
Usage Based
Subscription
+1
|
— | 181 | IPO |
|
QBRICS, INC
Add TIA (Traceable, Immutable, & Auditable), capability… |
Paducah, United Stat...
|
2017 |
Blockchain
Quantum
+1
|
— | — | — | — | — | 6 | Pre Seed |
|
Bleximo Corp.
Powering Innovation Through Quantum Computing |
Berkeley, United Sta...
|
2017 |
Hardware
IT
+1
|
— | — | — | — | — | 5 | Seed |
|
MITRE
Solving Problems for a Safer World. |
Mclean, United State...
|
1958 |
Cyber Security
Information Technology
+2
|
— | — | — | — | — | 10,191 | Grant |
|
Great Lakes Crystal Technologi...
Harnessing The Power of Diamond |
East Lansing, United...
|
2019 |
Quantum
|
— | — | — | — | — | 35 | Series Unknown |
|
MagiQ Technologies
Optical processing solutions for effective energy explo… |
Somerville, United S...
|
1999 |
Messaging and Telecommunications
Quantum
+1
|
— | — | — | — | — | 19 | Seed |
|
memQ
Hardware for Distributed Quantum Information |
Chicago, United Stat...
|
2022 |
IT
Quantum
+1
|
Development Of Quantum Networking Technology Using Rare Earth Qubits And Silicon Photonics For Asynchronous Optical Interconnect.
|
Telecommunication Companies
Quantum Computing Researchers
+1
|
— | — | — | 7 | Seed |
|
Qubitekk, Inc.
Qubitekk designs, builds, and integrates the hardware a… |
Vista, United States
|
2012 |
Cyber Security
Privacy and Security
+1
|
Optical Components And Systems For Quantum Networks
Quantum Security And Quantum Information Science
|
Businesses And Organizations Involved In Quantum Technology
Quantum Networking
+1
|
— | — | — | 11 | Series Unknown |
|
|
Quantum Xchange
Delivering the future of encryption. |
Bethesda, United Sta...
|
2018 |
Cloud Infrastructure
Cyber Security
+4
|
Enterprise Cryptographic Management Platform
Quantum-Safe Solutions
+1
|
Enterprise IT Departments
CIOs
+4
|
— | — | — | 17 | Series A |
|
D-Wave
The Quantum Computing Company |
Palo Alto, United St...
|
1999 |
Manufacturing
Quantum
+1
|
Quantum Computing Solutions
Professional Services
+3
|
Enterprises
Government Agencies
+3
|
— | — | — | 281 | Grant |
|
Quantum Circuits, Inc.
Building quantum computers designed to scale |
New Haven, United St...
|
2015 |
IT
Manufacturing
+1
|
Quantum Error Detection
Real-Time Control Flow
+3
|
Quantum Researchers
Tech Companies
+4
|
B2B
Platform
+1
|
Usage Based
Subscription
+1
|
— | 77 | Acquired |
|
QC Ware Corp.
Enterprise Quantum Computing |
Palo Alto, United St...
|
2014 |
Hardware
Quantum
|
DFT-based Scoring Function
Molecular Modeling Platform
+3
|
Computational Chemists
Medicinal Chemists
+4
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 42 | Series B |
|
QuSecure
Post-Quantum Cryptography Made Simple |
San Mateo, United St...
|
2019 |
Applications
Cyber Security
+2
|
QuProtect R3 Platform
QuProtect Recon
+2
|
Telecom
Finance
+5
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 56 | Series A |
|
Quantum Machines
Accelerating the Realization of Practical Quantum Compu… |
Claymont, United Sta...
|
2018 |
Quantum
|
Quantum Computing Control And Electronics Solution From Room Temperature To Cryogenics
|
Full-stack Quantum Computing Vendors
HPC Centers
+1
|
— | — | — | 237 | Series C |
|
Infleqtion
Revolutionizing how we communicate, navigate, and disco… |
Louisville, United S...
|
2007 |
Design
Manufacturing
+1
|
Quantum Computing Solutions
Contextual Machine Learning
+5
|
Governments
Corporations
+6
|
B2B
B2G
+1
|
Product Sales
Service Fee
+1
|
— | 181 | Grant |
|
Strangeworks
Humanizing Quantum® |
Austin, United State...
|
2018 |
Information Technology
Quantum
|
Heterogeneous Hybrid Compute
Optimization Modeling
+2
|
Enterprises
Governments
+3
|
B2B
Platform
+1
|
Subscription
Usage Based
+1
|
— | 34 | Series A |
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|
BosonQ Psi (BQP)
Enabling Simulations with Quantum Paradigm |
New York, United Sta...
|
2020 |
Quantum
Space
|
BQPhy® Optimization Solver
BQPhy® Physics Solver
+3
|
Aerospace Industry
Defense Sector
+4
|
B2B
SaaS
+1
|
Subscription
Usage Based
+1
|
— | 53 | Seed |
|
|
KeyAI - Recovery service
Advanced digital asset recovery, ensuring security and… |
Berkeley, United Sta...
|
2023 |
Blockchain
Crypto
+5
|
Cryptocurrency Recovery Services
AI-Driven Recovery
+2
|
Cryptocurrency Owners
Blockchain Enthusiasts
+2
|
— | — | — | 2 | Seed |
|
Quantinuum
We’re advancing quantum computing to solve the world’s… |
Broomfield, United S...
|
2021 |
Cyber Security
Quantum
|
Quantum Computers
Quantum Origin (QRNG)
+4
|
Enterprises Seeking Post-Quantum Security
Researchers In Quantum Computing
+6
|
B2B
SaaS
+1
|
Usage Based
Subscription
+1
|
— | 594 | Post Ipo Equity |
Showing 20 of 48 companies in this list
