69 Best Quantum Computing Startups to Watch in 2025

The Definitive Seedtable Ranking of Quantum Computing Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 168 start-ups with an aggregate funding of $4.2b. The average funding per company in this subset is $61.2m.

Last update to the database: Feb 18, 2025. See changelog.

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10

Funding Rounds

$269.5m

Money raised

Rigetti Computing is a quantum computing company based in Berkeley, California.

5

Funding Rounds

$140.5m

Money raised

Pasqal is a company building programmable quantum simulators and quantum computers made of 2D and 3D arrays of neutral atoms.

Location:

Key people:

1

Funding Rounds

$50.0k

Money raised

HYPRES is a developer of superconducting microelectronics for defense, wireless, and optical network industries.

7

Funding Rounds

$3.3m

Money raised

NanoSonic Inc. is a Pembroke, VA-based advanced materials company specializing in thermal management solutions (such as thermal arrays) and related safety equipment

11

Funding Rounds

$185.7m

Money raised

D-Wave Systems is a Canadian company that designs and manufactures quantum computing and superconducting electronics, and AI software.

3

Funding Rounds

$88.0m

Money raised

Quandela is a Paris-based company developing optical quantum technology integrated into photonic chips.

Location:

Key people:

1

Funding Rounds

$500.0m

Money raised

SandboxAQ develops AI and quantum technology solutions for various industries.

6

Funding Rounds

$39.6m

Money raised

Multiverse Computing is a Spanish startup developing quantum and AI business solutions.

Location:

Key people:

2

Funding Rounds

$8.0m

Money raised

Crypto Quantique is a company that specializes in quantum cyber security.

Key people:

5

Funding Rounds

$2.5m

Money raised

A company offering a platform for privacy and security for quantum cloud computing.

Key people:

3

Funding Rounds

$54.1k

Money raised

ApexQubit is a biotechnology company that is harnessing a proprietary technology for discovery of new medicines to treat patients with undruggable diseases.

4

Funding Rounds

$28.2m

Money raised

Quantum computing software company building an engine for the simulation of microscopic systems, with the goal of replacing expensive laboratory tests with computer simulation.

Key people:

2

Funding Rounds

$3.2m

Money raised

Horizon Quantum Computing is a Singapore-based company developing quantum software development tools founded in 2018.

Location:

Key people:

1

Funding Rounds

$4.4m

Money raised

Qlm Technology Ltd is a Bristol-based company developing quantum gas sensing technology for the oil and gas industry.

Location:

Key people:

4

Funding Rounds

$18.0m

Money raised

Quantum Circuits Company is a company that is aiming to develop, manufacture, and sell the first practical and useful quantum computer using superconducting qubits. It is based in New Haven, Connecticut and founded in 2015 by Robert J. Schoelkopf, Michel Devoret, Luigi Frunzio and Brian W. Pusch.

Key people:

6

Funding Rounds

$107.6m

Money raised

Zapata Computing is a company developing quantum software and algorithms for business founded in 2017 by Christopher Savoie, Alán Aspuru-Guzik, Jhonathan Romero Fontalvo, Jonathan Olson, Peter Johnson and Yudong Cao.

1

Funding Rounds

$1.6m

Money raised

Rahko is a company that is developing a quantum discovery platform for the chemical simulations.

4

Funding Rounds

$14.1m

Money raised

Qnami is a quantum technology company that is developing and commercializing quantum sensing and quantum imaging technologies using synthetic diamond and quantum technologies. Qnami's products are in life-science R&D and semiconductor electronics.

Location:

Key people:

1

Funding Rounds

$5.6m

Money raised

ID Quantique is a company developing quantum cybersecurity products, quantum scientific instrumentation, and quantum random number generation.

Location:

Key people:

1

Funding Rounds

$10.0m

Money raised

Brilliant is a San Francisco-based educational technology company.

Key people:

8

Funding Rounds

$1.2b

Money raised

PsiQuantum is a company that is building a general-purpose silicon photonic quantum computer.

8

Funding Rounds

$183.4m

Money raised

Q-CTRL is a company that develops software for quantum technologies.

Location:

Key people:

3

Funding Rounds

$14.4m

Money raised

Satellite network provider for IoT connectivity in remote areas.

Location:

Key people:

3

Funding Rounds

$26.8m

Money raised

ISARA is a company developing quantum computer resistant software products founded in 2015 by Scott Totzke.

6

Funding Rounds

$137.1m

Money raised

Xanadu is a company developing quantum computing and artificial intelligence technologies.

Location:

Key people:

6

Funding Rounds

$211.9m

Money raised

IQM is a company utilizing superconducting technology to build scalable quantum computing hardware.

Location:

Key people:

5

Funding Rounds

$62.1m

Money raised

Company developing and designing components and systems for scientific and industrial quantum applications.

5

Funding Rounds

$62.7m

Money raised

QC Ware Corp. is a company that offers quantum computing software solutions for enterprises.

Key people:

5

Funding Rounds

$34.2m

Money raised

A quantum computing software company that partners with industry and academia to build computer applications that can improve with advances in both quantum and classical computing. The company’s mission is to apply computation breakthroughs to machine intelligence and optimization science using their hardware-agnostic software platform.

Location:

Key people:

1

Funding Rounds

$1.0m

Money raised

Qunnect is a quantum communication company that is developing room-temperature, portable, modular technologies to support optical, long-distance and quantum-secured communication.

1

Funding Rounds

$2.7m

Money raised

Aliro Technologies (Aliro), a spinout of the NarangLab at Harvard University, makes software that facilitates user access to present day quantum computers.

Location:

Key people:

2

Funding Rounds

$2.0m

Money raised

Entropica Labs is a company developing quantum computing and AI tools for bioinformatics and genomics.

Location:

Key people:

6

Funding Rounds

$650.0k

Money raised

QuSecure is a Menlo Park, California-based cybersecurity company that is developing quantum security applications, it was founded in 2019 by Skip Sanzeri, Rebecca Krauthamer, Dave Krauthamer, and Kosta Vilk.

7

Funding Rounds

$249.3m

Money raised

InfiniQuant is a research team hosted in Christoph Marquardt’s Quantum Information Processing group at the Max Planck Institute for Science and Light.

2

Funding Rounds

A company developing cryogenic cooling solutions for research, material science, quantum computing, high-performance electronics, and detector applications.

3

Funding Rounds

$69.5m

Money raised

AI-powered drug discovery platform.

Location:

Key people:

4

Funding Rounds

$11.2m

Money raised

Post-Quantum is a company that is developing quantum-resistant encryption for protection against code-breaking quantum computers and quantum-resistant signature schemes for secure blockchain deployment.

3

Funding Rounds

$81.0m

Money raised

Atom Computing Inc. manufactures scalable quantum computers out of individual atoms.

1

Funding Rounds

QuiX is a company that makes a room temperature photonic quantum processor based on silicon nitride waveguides.

5

Funding Rounds

$32.7m

Money raised

PhaseCraft is company that is developing fundamental quantum theory and software for quantum computers.

Location:

Key people:

4

Funding Rounds

$66.6m

Money raised

Alice & Bob is an universal fault-tolerant quantum computer creator founded in 2020 by Théau Péronnin.

Location:

Key people:

3

Funding Rounds

$4.7m

Money raised

Crypta Labs is quantum security startup that is developing a quantum-based encryption chip and software to secure the Internet of Things. The company developed a Quantum Random Number Generator (QRNG) for mobile devices and an integrated security chip for others. The company is targeting transport, military and medical markets.

Key people:

2

Funding Rounds

$500.0k

Money raised

Quantum Thought offers an incubator for the creation of quantum computing applications.

Location:

Key people:

2

Funding Rounds

Quantum Benchmark is a company that is developing quantum software solutions for overcoming quantum computing errors.

3

Funding Rounds

$37.0m

Money raised

Quantum Xchange is a quantum fiber network that is based in the United States. It uses photons of light to physically transfer a shared secret between two entities.

2

Funding Rounds

$8.4m

Money raised

QxBranch is a data analysis and quantum computing software company.

Location:

Key people:

1

Funding Rounds

$4.4m

Money raised

Company developing optical communications hardware for strong digital encryption.

Location:

Key people:

2

Funding Rounds

Founded by experts in quantum physics and semiconductors, Equal1 aims to democratise quantum computing by making it accessible and affordable with its innovative quantum silicon technology.

1

Funding Rounds

$1.4m

Money raised

An artificial intelligence company using quantum computing to create molecular design solutions.

1

Funding Rounds

NetraMark is a Toronto-based machine learning software company founded by Joseph Geraci in 2015.

3

Funding Rounds

$34.8m

Money raised

A quantum computing company using ion trap technology to develop commercial quantum computers.

1

Funding Rounds

$1.5m

Money raised

Company building "quantum accelerators” a type of computing system that work in conjunction with classical computers to solve problems that are impractical or impossible to solve on classical computer alone.

2

Funding Rounds

Qu & Co is a company that offers quantum-computational chemistry as-a-service.

1

Funding Rounds

$1.9m

Money raised

SpeQtral is a company that is interested in developing quantum communication technologies

2

Funding Rounds

ArQit is working to provide the world's first global quantum encryption SaaS Business. They will use QKD technology to create unique keys that can be shared between two parties using laser transmissions from a satellite. The company is based in London, England and was founded in 2017.

3

Funding Rounds

$8.1m

Money raised

A company using quantum computing and machine learning to design proteins.

Location:

Key people:

3

Funding Rounds

$30.0m

Money raised

A company developing a scalable and modular quantum computer powered by photonics.

Location:

Key people:

2

Funding Rounds

$2.9m

Money raised

GTN uses machine learning and quantum physics technology to simulate, analyse and discover chemicals computationally.

1

Funding Rounds

$1.8m

Money raised

Company developing decentralized quantum hardware for portable quantum processing.

1

Funding Rounds

$4.0m

Money raised

Strangeworks is a company offering a hardware-agnostic quantum computing platform founded in 2018 by Whurley.

2

Funding Rounds

$9.8m

Money raised

Quantum Motion is a company that develops scalable arrays of qubits using CMOS silicon processes.

Location:

Key people:

3

Funding Rounds

$73.0m

Money raised

Quantum Machines is a company that is developing operations and control systems for quantum computers.

Location:

Key people:

7

Funding Rounds

$72.8m

Money raised

Cambridge Quantum Computing (CQC) was a quantum computing company with expertise in Quantum Information Processing, Artificial Intelligence, Optimization, and Pattern Recognition. In December 2021, the company merged with Honeywell Quantum Solutions (HQS) to form Quantinuum.

Key people:

4

Funding Rounds

$32.2m

Money raised

Company developing light-speed optical processors and AI systems.

Location:

Key people:

3

Funding Rounds

$5.2m

Money raised

HQS Quantum Simulations Company is a Karlsruhe-based company developing quantum computing software and algorithms for predicting the properties of performance materials, specialty chemicals, and pharmaceutical companies.

Location:

Key people:

1

Funding Rounds

Qulab is a company that uses classical and quantum computing to automate molecular drug design.

1

Funding Rounds

A company making quantum electronic design automation toolkits for designing and optimizing nano and quantum electronics.

Location:

Key people:

8

Funding Rounds

$20.6m

Money raised

UbiQD is a New Mexico-based company developing and manufacturing semiconductor nanocrystals or quantum dots for research applications.

1

Funding Rounds

QEYnet is a company that develops cybersecurity software to defend against quantum computers.

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