16 Best Quantum Photonics Startups to Watch in 2025

The Definitive Seedtable Ranking of Quantum Photonics 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 16 start-ups with an aggregate funding of $1.6b. The average funding per company in this subset is $102.0m.

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

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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

$5.6m

Money raised

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

Location:

Key people:

8

Funding Rounds

$1.2b

Money raised

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

6

Funding Rounds

$137.1m

Money raised

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

Location:

Key people:

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.

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.

1

Funding Rounds

$4.4m

Money raised

Company developing optical communications hardware for strong digital encryption.

Location:

Key people:

3

Funding Rounds

$34.8m

Money raised

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

3

Funding Rounds

$30.0m

Money raised

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

Location:

Key people:

4

Funding Rounds

$4.3m

Money raised

Qubitekk is a company that is making quantum technologies for scientists, engineers, and developers.

4

Funding Rounds

$13.9m

Money raised

M Squared Lasers explores, develops and manufactures next-generation lasers and photonic instruments that bring new capabilities, higher reliability and greater ease of use to a diverse range of industrial and scientific applications. The core team ...

Key people:

1

Funding Rounds

A research and development company in quantum technologies and nanotechnology. The four core areas NQCG focuses on are Quantum Information Technology, Nanoscience and Nanotechnology, Artificial Intelligence Technology and Ontology Learning and Evolution.

1

Funding Rounds

$60.2k

Money raised

Single Quantum is a company making optical imaging and telecommunication systems founded in 2012 by Sander Dorenbos.

Key people:

1

Funding Rounds

$4.5m

Money raised

A company developing and commercializing photonic quantum computing components.

1

Funding Rounds

$1.9m

Money raised

Bra-ket Science is a company making room-temperature qubit storage technology.

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