Quantum startups
The early-stage companies betting on each modality. Names and modality assignments are verified; founding years, headquarters and specs are deliberately left unverified rather than invented.
| Company | Modality | Status | Approach | |
|---|---|---|---|---|
| Q | Q-CTRL | software | private | Quantum control and error-suppression software that improves other people's hardware: plus a sensing division. |
| C | Classiq | software | private | High-level quantum algorithm design: describe the function, synthesize the circuit for any hardware. |
|
Multiverse Computing | software | private | Spanish company applying quantum and quantum-inspired algorithms (notably tensor networks) to finance and industry: including AI-model compression. |
Directory facts policy: this field's numbers change quarterly, and wrong numbers destroy credibility. Founding years, headquarters, funding and device specs render as "to verify" until checked against primary sources. Never a recommendation of any company.