# Quantum Companies

> Find the companies building quantum technology.

Find the companies building quantum technology. Browse 162 quantum companies and confirm capabilities directly with each vendor.

## Quantum companies by city

- [Boulder, CO, United States](https://quantumcompanies.fyi/us/co/boulder.md): 6 quantum companies
- [Montreal, QC, Canada](https://quantumcompanies.fyi/ca/qc/montreal.md): 4 quantum companies
- [Munich, Munich, Germany](https://quantumcompanies.fyi/de/munich/munich.md): 4 quantum companies
- [Waterloo, ON, Canada](https://quantumcompanies.fyi/ca/on/waterloo.md): 4 quantum companies
- [Delft, Delft, Netherlands](https://quantumcompanies.fyi/nl/delft/delft.md): 3 quantum companies
- [Delft, South Holland, Netherlands](https://quantumcompanies.fyi/nl/south-holland/delft.md): 3 quantum companies
- [London, England, United Kingdom](https://quantumcompanies.fyi/gb/england/london.md): 3 quantum companies
- [Paris, Île-de-France, France](https://quantumcompanies.fyi/fr/ile-de-france/paris.md): 3 quantum companies
- [Zurich, Zurich, Switzerland](https://quantumcompanies.fyi/ch/zurich/zurich.md): 3 quantum companies
- [Berlin, Berlin, Germany](https://quantumcompanies.fyi/de/berlin/berlin.md): 2 quantum companies
- [Bozeman, MT, United States](https://quantumcompanies.fyi/us/mt/bozeman.md): 2 quantum companies
- [Cambridge, MA, United States](https://quantumcompanies.fyi/us/ma/cambridge.md): 2 quantum companies
- [Cambridge, England, United Kingdom](https://quantumcompanies.fyi/gb/england/cambridge.md): 2 quantum companies
- [Copenhagen, Capital Region, Denmark](https://quantumcompanies.fyi/dk/capital-region/copenhagen.md): 2 quantum companies
- [Enschede, Enschede, Netherlands](https://quantumcompanies.fyi/nl/enschede/enschede.md): 2 quantum companies
- [Espoo, Espoo, Finland](https://quantumcompanies.fyi/fi/espoo/espoo.md): 2 quantum companies
- [Goleta, CA, United States](https://quantumcompanies.fyi/us/ca/goleta.md): 2 quantum companies
- [Oxford, England, United Kingdom](https://quantumcompanies.fyi/gb/england/oxford.md): 2 quantum companies
- [Sherbrooke, QC, Canada](https://quantumcompanies.fyi/ca/qc/sherbrooke.md): 2 quantum companies
- [Singapore, Singapore, Singapore](https://quantumcompanies.fyi/sg/singapore/singapore.md): 2 quantum companies
- [Stuttgart, Stuttgart, Germany](https://quantumcompanies.fyi/de/stuttgart/stuttgart.md): 2 quantum companies
- [Tokyo, Tokyo, Japan](https://quantumcompanies.fyi/jp/tokyo/tokyo.md): 2 quantum companies
- [Vienna, Vienna, Austria](https://quantumcompanies.fyi/at/vienna/vienna.md): 2 quantum companies
- [Adelaide, NSW, Australia](https://quantumcompanies.fyi/au/nsw/adelaide.md): 1 quantum company
- [Adelaide, SA, Australia](https://quantumcompanies.fyi/au/sa/adelaide.md): 1 quantum company
- [Arvada, CO, United States](https://quantumcompanies.fyi/us/co/arvada.md): 1 quantum company
- [Austin, TX, United States](https://quantumcompanies.fyi/us/tx/austin.md): 1 quantum company
- [Barcelona, Barcelona, Spain](https://quantumcompanies.fyi/es/barcelona/barcelona.md): 1 quantum company
- [Bengaluru, Bengaluru, India](https://quantumcompanies.fyi/in/bengaluru/bengaluru.md): 1 quantum company
- [Berkeley, CA, United States](https://quantumcompanies.fyi/us/ca/berkeley.md): 1 quantum company
- [Besancon, Besancon, France](https://quantumcompanies.fyi/fr/besancon/besancon.md): 1 quantum company
- [Bethesda, MD, United States](https://quantumcompanies.fyi/us/md/bethesda.md): 1 quantum company
- [Bilbao, Basque Country, Spain](https://quantumcompanies.fyi/es/basque-country/bilbao.md): 1 quantum company
- [Birkerød, Birkerød, Denmark](https://quantumcompanies.fyi/dk/birkerod/birkerod.md): 1 quantum company
- [Bloomington, MN, United States](https://quantumcompanies.fyi/us/mn/bloomington.md): 1 quantum company
- [Boston, MA, United States](https://quantumcompanies.fyi/us/ma/boston.md): 1 quantum company
- [Bristol, England, United Kingdom](https://quantumcompanies.fyi/gb/england/bristol.md): 1 quantum company
- [Brixham, England, United Kingdom](https://quantumcompanies.fyi/gb/england/brixham.md): 1 quantum company
- [Broomfield, CO, United States](https://quantumcompanies.fyi/us/co/broomfield.md): 1 quantum company
- [Bucharest, Bucharest, Romania](https://quantumcompanies.fyi/ro/bucharest/bucharest.md): 1 quantum company
- [Burnaby, Metro Vancouver Regional District, Canada](https://quantumcompanies.fyi/ca/metro-vancouver-regional-district/burnaby.md): 1 quantum company
- [California, CA, United States](https://quantumcompanies.fyi/us/ca/california.md): 1 quantum company
- [Canberra, VIC, Australia](https://quantumcompanies.fyi/au/vic/canberra.md): 1 quantum company
- [Canberra, NSW, Australia](https://quantumcompanies.fyi/au/nsw/canberra.md): 1 quantum company
- [Castelldefels, Castelldefels, Spain](https://quantumcompanies.fyi/es/castelldefels/castelldefels.md): 1 quantum company
- [Chattanooga, TN, United States](https://quantumcompanies.fyi/us/tn/chattanooga.md): 1 quantum company
- [Chicago, IL, United States](https://quantumcompanies.fyi/us/il/chicago.md): 1 quantum company
- [Cirencester, England, United Kingdom](https://quantumcompanies.fyi/gb/england/cirencester.md): 1 quantum company
- [Copenhagen, Copenhagen, Denmark](https://quantumcompanies.fyi/dk/copenhagen/copenhagen.md): 1 quantum company
- [Courbevoie, Courbevoie, France](https://quantumcompanies.fyi/fr/courbevoie/courbevoie.md): 1 quantum company
- [Dallas, TX, United States](https://quantumcompanies.fyi/us/tx/dallas.md): 1 quantum company
- [Denver, CO, United States](https://quantumcompanies.fyi/us/co/denver.md): 1 quantum company
- [Didcot, England, United Kingdom](https://quantumcompanies.fyi/gb/england/didcot.md): 1 quantum company
- [Edinburgh, England, United Kingdom](https://quantumcompanies.fyi/gb/england/edinburgh.md): 1 quantum company
- [Edmonton, AB, Canada](https://quantumcompanies.fyi/ca/ab/edmonton.md): 1 quantum company
- [Elmsford, NY, United States](https://quantumcompanies.fyi/us/ny/elmsford.md): 1 quantum company
- [England, England, United Kingdom](https://quantumcompanies.fyi/gb/england/england.md): 1 quantum company
- [Espoo, Uusimaa, Finland](https://quantumcompanies.fyi/fi/uusimaa/espoo.md): 1 quantum company
- [Fürth, Fürth, Germany](https://quantumcompanies.fyi/de/furth/furth.md): 1 quantum company
- [Garching, Garching, Germany](https://quantumcompanies.fyi/de/garching/garching.md): 1 quantum company
- [Geneva, Geneva, Switzerland](https://quantumcompanies.fyi/ch/geneva/geneva.md): 1 quantum company
- [Glasgow, Scotland, United Kingdom](https://quantumcompanies.fyi/gb/scotland/glasgow.md): 1 quantum company
- [Glasgow, England, United Kingdom](https://quantumcompanies.fyi/gb/england/glasgow.md): 1 quantum company
- [Golden, CO, United States](https://quantumcompanies.fyi/us/co/golden.md): 1 quantum company
- [Gothenburg, Gothenburg, Sweden](https://quantumcompanies.fyi/se/gothenburg/gothenburg.md): 1 quantum company
- [Haar, Haar, Germany](https://quantumcompanies.fyi/de/haar/haar.md): 1 quantum company
- [Hamburg, Hamburg, Germany](https://quantumcompanies.fyi/de/hamburg/hamburg.md): 1 quantum company
- [Hayward's Heath, England, United Kingdom](https://quantumcompanies.fyi/gb/england/haywards-heath.md): 1 quantum company
- [Hefei, Hefei, China](https://quantumcompanies.fyi/cn/hefei/hefei.md): 1 quantum company
- [Helsinki, Helsinki, Finland](https://quantumcompanies.fyi/fi/helsinki/helsinki.md): 1 quantum company
- [Hoboken, NJ, United States](https://quantumcompanies.fyi/us/nj/hoboken.md): 1 quantum company
- [Innsbruck, Innsbruck, Austria](https://quantumcompanies.fyi/at/innsbruck/innsbruck.md): 1 quantum company
- [Jena, Jena, Germany](https://quantumcompanies.fyi/de/jena/jena.md): 1 quantum company
- [Jena, Thuringia, Germany](https://quantumcompanies.fyi/de/thuringia/jena.md): 1 quantum company
- [Karlsruhe, Karlsruhe, Germany](https://quantumcompanies.fyi/de/karlsruhe/karlsruhe.md): 1 quantum company
- [Lausanne, Vaud, Switzerland](https://quantumcompanies.fyi/ch/vaud/lausanne.md): 1 quantum company
- [Leiden, Leiden, Netherlands](https://quantumcompanies.fyi/nl/leiden/leiden.md): 1 quantum company
- [Leipzig, Leipzig, Germany](https://quantumcompanies.fyi/de/leipzig/leipzig.md): 1 quantum company
- [Livingston, WLN, United Kingdom](https://quantumcompanies.fyi/gb/wln/livingston.md): 1 quantum company
- [Louisville, CO, United States](https://quantumcompanies.fyi/us/co/louisville.md): 1 quantum company
- [Lyngby, Capital Region, Denmark](https://quantumcompanies.fyi/dk/capital-region/lyngby.md): 1 quantum company
- [Martinsried, Martinsried, Germany](https://quantumcompanies.fyi/de/martinsried/martinsried.md): 1 quantum company
- [Massy, Massy, France](https://quantumcompanies.fyi/fr/massy/massy.md): 1 quantum company
- [Melbourne, VIC, Australia](https://quantumcompanies.fyi/au/vic/melbourne.md): 1 quantum company
- [Migdal HaEmek, Migdal HaEmek, Israel](https://quantumcompanies.fyi/il/migdal-haemek/migdal-haemek.md): 1 quantum company
- [Milano, Lombardy, Italy](https://quantumcompanies.fyi/it/lombardy/milano.md): 1 quantum company
- [Monrovia, CA, United States](https://quantumcompanies.fyi/us/ca/monrovia.md): 1 quantum company
- [Mountain View, CA, United States](https://quantumcompanies.fyi/us/ca/mountain-view.md): 1 quantum company
- [Muttenz, Muttenz, Switzerland](https://quantumcompanies.fyi/ch/muttenz/muttenz.md): 1 quantum company
- [Ness Ziona, Ness Ziona, Israel](https://quantumcompanies.fyi/il/ness-ziona/ness-ziona.md): 1 quantum company
- [New York, NY, United States](https://quantumcompanies.fyi/us/ny/new-york.md): 1 quantum company
- [Ottawa, ON, Canada](https://quantumcompanies.fyi/ca/on/ottawa.md): 1 quantum company
- [Palaiseau, Palaiseau, France](https://quantumcompanies.fyi/fr/palaiseau/palaiseau.md): 1 quantum company
- [Paris, Paris, France](https://quantumcompanies.fyi/fr/paris/paris.md): 1 quantum company
- [Pasadena, CA, United States](https://quantumcompanies.fyi/us/ca/pasadena.md): 1 quantum company
- [Pittsford, NY, United States](https://quantumcompanies.fyi/us/ny/pittsford.md): 1 quantum company
- [Plainsboro, NJ, United States](https://quantumcompanies.fyi/us/nj/plainsboro.md): 1 quantum company
- [Pleasanton, CA, United States](https://quantumcompanies.fyi/us/ca/pleasanton.md): 1 quantum company
- [Plymouth, MI, United States](https://quantumcompanies.fyi/us/mi/plymouth.md): 1 quantum company
- [QUANTUM RESEARCHERS Austin, TX, United States](https://quantumcompanies.fyi/us/tx/quantum-researchers-austin.md): 1 quantum company
- [Rennes, Rennes, France](https://quantumcompanies.fyi/fr/rennes/rennes.md): 1 quantum company
- [Rorschach, Rorschach, Switzerland](https://quantumcompanies.fyi/ch/rorschach/rorschach.md): 1 quantum company
- [San Diego, CA, United States](https://quantumcompanies.fyi/us/ca/san-diego.md): 1 quantum company
- [San Jose, CA, United States](https://quantumcompanies.fyi/us/ca/san-jose.md): 1 quantum company
- [San Rafael, CA, United States](https://quantumcompanies.fyi/us/ca/san-rafael.md): 1 quantum company
- [Santa Barbara, CA, United States](https://quantumcompanies.fyi/us/ca/santa-barbara.md): 1 quantum company
- [Sarcedo, Sarcedo, Italy](https://quantumcompanies.fyi/it/sarcedo/sarcedo.md): 1 quantum company
- [Seoul, Seoul, South Korea](https://quantumcompanies.fyi/kr/seoul/seoul.md): 1 quantum company
- [Sheridan, WY, United States](https://quantumcompanies.fyi/us/wy/sheridan.md): 1 quantum company
- [Siegen, Siegen, Germany](https://quantumcompanies.fyi/de/siegen/siegen.md): 1 quantum company
- [Southampton, England, United Kingdom](https://quantumcompanies.fyi/gb/england/southampton.md): 1 quantum company
- [Sydney, NSW, Australia](https://quantumcompanies.fyi/au/nsw/sydney.md): 1 quantum company
- [Syracuse, NH, United States](https://quantumcompanies.fyi/us/nh/syracuse.md): 1 quantum company
- [Tallinn, Tallinn, Estonia](https://quantumcompanies.fyi/ee/tallinn/tallinn.md): 1 quantum company
- [Tampere, Tampere, Finland](https://quantumcompanies.fyi/fi/tampere/tampere.md): 1 quantum company
- [Tarrytown, NY, United States](https://quantumcompanies.fyi/us/ny/tarrytown.md): 1 quantum company
- [Tel-Aviv, Tel-Aviv, Israel](https://quantumcompanies.fyi/il/tel-aviv/tel-aviv.md): 1 quantum company
- [Tempe, AZ, United States](https://quantumcompanies.fyi/us/az/tempe.md): 1 quantum company
- [The Hague, South Holland, Netherlands](https://quantumcompanies.fyi/nl/south-holland/the-hague.md): 1 quantum company
- [Toronto, ON, Canada](https://quantumcompanies.fyi/ca/on/toronto.md): 1 quantum company
- [Ulm, Ulm, Germany](https://quantumcompanies.fyi/de/ulm/ulm.md): 1 quantum company
- [Valencia, Valencia, Spain](https://quantumcompanies.fyi/es/valencia/valencia.md): 1 quantum company
- [Warszawa, Warszawa, Poland](https://quantumcompanies.fyi/pl/warszawa/warszawa.md): 1 quantum company
- [Woburn, MA, United States](https://quantumcompanies.fyi/us/ma/woburn.md): 1 quantum company

## Quantum buying guides

- [Quantum technology glossary](https://quantumcompanies.fyi/guides/glossary.md): Plain-language definitions of key terms in quantum computing, sensing, networking, cryptography and components. Updated quarterly.
- [How to buy quantum cloud time](https://quantumcompanies.fyi/guides/how-to-buy-quantum-cloud-time.md): Compare AWS Braket, Azure Quantum and IBM Quantum Platform pricing, access models and free tiers for gate-model QPUs, annealers and simulators.
- [How to vet a quantum vendor](https://quantumcompanies.fyi/guides/how-to-vet-a-quantum-vendor.md): A procurement checklist for evaluating quantum hardware, software, cloud and services vendors. Technical, commercial and compliance questions to ask before you sign.
- [Post-quantum cryptography migration timeline](https://quantumcompanies.fyi/guides/post-quantum-cryptography-migration-timeline.md): NIST FIPS 203/204/205 (ML-KEM, ML-DSA, SLH-DSA), NSA CNSA 2.0 and US OMB M-26-15 deadlines for federal and commercial migration.
- [Quantum careers and skills](https://quantumcompanies.fyi/guides/quantum-careers-and-skills.md): Roles, skills, salaries and hiring trends for quantum computing, sensing, networking and cryptography. University programs, certifications and transition paths from classical tech.
- [Quantum computing modalities compared](https://quantumcompanies.fyi/guides/quantum-computing-modalities-compared.md): Compare superconducting, trapped-ion, neutral-atom, photonic, spin-qubit and topological quantum computers by qubit count, fidelity, connectivity and cloud availability.
- [Quantum funding and market data 2025](https://quantumcompanies.fyi/guides/quantum-funding-and-market-data-2025.md): Global public and private investment in quantum technology. Government programs, venture capital, M&A and revenue estimates from McKinsey, BCG, PitchBook and government sources.
- [Quantum sensing use cases](https://quantumcompanies.fyi/guides/quantum-sensing-use-cases.md): Real-world applications of quantum magnetometers, gravimeters, atomic clocks and inertial sensors in defense, healthcare, navigation and resource exploration.

## Questions

### Does a listing mean a company has been vetted?

No. A listing records public business facts from the company's own website and Overture Maps. Check technical claims, references and contracts yourself. A paid badge is not a technical qualification.

### Where does the data come from?

Business websites and Overture Maps, fetched 2026-11-01. Each record keeps its source. Owners can claim listings and supply modality, qubit counts, cloud access and project details.

### Can I compare qubit counts across companies?

Qubit count alone does not determine capability. Compare modality, connectivity, gate fidelity, coherence times and error rates. We record only the published qubit count; ask each vendor for full benchmarks.