Quantum Computing Companies
Which approaches do quantum computing companies use?
| Approach | How a qubit is made | Examples | Trade off |
|---|---|---|---|
| Superconducting circuits | Tiny electrical circuits cooled near absolute zero | IBM, Google Quantum AI, Rigetti | Fast operations, needs heavy cooling and careful error control |
| Trapped ions | Charged atoms held by electric fields | IonQ, Quantinuum Ltd | High quality qubits, slower operations |
| Neutral atoms | Uncharged atoms held by laser tweezers | QuEra, Pasqal | Large arrays, operations still maturing |
| Photonics | Particles of light in optical chips | PsiQuantum, Xanadu | Works at room temperature in places, hard to make photons interact |
| Quantum annealing | Superconducting circuits used to solve optimisation problems | D-Wave | Specialised for optimisation, not a general purpose gate machine |
Each company's own site is the primary source for its claims. Announced roadmaps are plans, not delivered machines. Compare how they work in types of quantum computers and gate model vs annealing.
Company profiles
- IBM
Its published roadmap targets IBM Quantum Starling, 200 logical qubits and 100 million gates, by 2029 (IBM blog, June 2025). - Google Quantum AI
Announced the 105 qubit Willow chip in December 2024 with error correction that improves as the code grows (Google). - Quantinuum Ltd
A trapped ion company. It is a different thing from QUANTUM (QNT) on Solana, see the comparison. - IonQ, Microsoft, PsiQuantum and the rest
- How to read quantum computing stocks without the hype
- Quantum computing companies guide and biggest innovators
How do these companies make money?
Mostly from government contracts, cloud access, research partnerships and system sales, rather than from products that beat classical computers today. See how pure play quantum companies make money and government vs commercial revenue. Some of these companies are publicly traded. This site does not recommend any stock, and QNT gives no ownership in any of them.
How does QNT relate to these companies?
It does not. QUANTUM (QNT) is a community token on Solana with a quantum theme, with no company, partnership or endorsement from any firm on this page. See what QNT is.
Sources
- IBM Quantum blog: large scale fault tolerant quantum computing
- Google: Meet Willow
- Official sites linked in the table above
Educational content, not investment advice.
Frequently asked questions
Who are the main quantum computing companies?
IBM and Google Quantum AI (superconducting qubits), IonQ and Quantinuum Ltd (trapped ions), QuEra and Pasqal (neutral atoms), PsiQuantum and Xanadu (photons) and D-Wave (annealing), among others.
Which quantum computing approach is best?
None has clearly won. Each trades off qubit quality, speed, size and the need for cooling. Companies publish roadmaps, but those are plans rather than delivered machines.
Is QNT connected to any quantum computing company?
No. QUANTUM (QNT) on Solana has no partnership with or endorsement from any quantum computing company, including Quantinuum Ltd.
Keep reading
- Quantum Computing Explained
An accessible explanation of quantum computing: qubits, what quantum computers are good at, where the technology stands today, and what it means for cryptography, with sources from IBM, NIST and arXiv. - Quantum Computing News and Commentary
Dated quantum computing milestones from primary sources such as IBM, Google and NIST, each with a short plain English comment on what it means for crypto. Reviewed regularly. - What Is QNT?
QUANTUM (QNT) is a quantum themed community memecoin on Solana. What it is, what it is not, who is behind it, its purpose and risks, and its links to no company.