All Industries

Top Quantum Computing Companies

88 Quantum Computing companies, sorted by total funding raised.

QuiX Quantum

QuiX Quantum builds integrated photonic quantum-computing hardware for hybrid quantum-classical d...

Enschede, Netherlands11–50Quantum Computing
Series ATotal funding$22.9MJul 2025
Waterloo Quantum

QuantumCore engineers cryogenic quantum infrastructure that helps hardware teams reduce signal no...

Waterloo, Canada1–10Quantum Computing
Series ATotal funding$21.4MApr 2026
QunaSys

Quantum computing in Japan

Tokyo, Japan11–50Quantum Computing, SaaS
Series BTotal funding$21.2MNov 2024
Quantum Simulations

Quantum simulation software for analytical chemistry and NMR spectrum analysis.

Karlsruhe, Germany11–50Analytics, Quantum Computing
Series ATotal funding$16.7MJan 2022
Aliro

Aliro provides software that helps enterprises and government teams plan, manage, and operate qua...

Boston, United States11–50Cybersecurity, Infrastructure
SeedTotal funding$15.6MFeb 2026
Quantum Bridge

Pioneer in Distributed Symmetric Key Exchange technology providing quantum-safe cybersecurity pro...

Toronto, Canada1–10Cybersecurity, Quantum Computing
Series ATotal funding$14.4MMay 2026
Casimir

Casimir develops quantum-energy chips designed to harvest persistent power from quantum fields fo...

Houston, United States1–10Deep Tech, Energy
SeedTotal funding$12.3MMay 2026
memQ

memQ develops an extensible quantum network architecture enabling networked quantum channels betw...

Chicago, United States1–10Quantum Computing
Series ATotal funding$12.0MApr 2026
BlueQubit

Quantum computing software platform enabling developers and enterprises to build, simulate, and r...

Los Angeles, United States11–50Quantum Computing
SeedTotal funding$10.0MDec 2024
Qunova Computing

Quantum computing company developing scalable quantum processors.

Daejeon, United States11–50Quantum Computing
Series ATotal funding$10.0MAug 2025
Arqit Quantum Inc.IPO

Quantum-safe encryption software provider delivering symmetric key agreement to secure communicat...

London, United Kingdom51–200Cybersecurity, Quantum Computing
Series ATotal funding$9.5MOct 2020
Cerca Magnetics

Wearable brain imaging systems powered by quantum sensing.

Nottingham, United Kingdom1–10Healthcare, Medical Devices
SeedTotal funding$9.2MApr 2026
CavilinQ

Quantum interconnect hardware startup.

Cambridge, United States1–10Quantum Computing, Deep Tech
SeedTotal funding$8.8MApr 2026
QphoX

Quantum modem technology enabling quantum internet connectivity.

Delft, Netherlands11–50Quantum Computing
Venture RoundTotal funding$8.8MJan 2024
Nanofiber Quantum Technologies

Nanofiber Quantum Technologies is a research and manufacturing company that develops hardware for...

Tokyo, Japan11–50Healthcare, Quantum Computing
Venture RoundTotal funding$8.5MSep 2023
BosonQ Psi

Enabling Simulations for Quantum Paradigm

Phoenix, United States11–50Smart Cities, Aerospace
SeedTotal funding$8.0MJul 2025
Iceberg Quantum

Designing the next generation of fault-tolerant quantum computing architectures

Sydney, Australia1–10Quantum Computing, Deep Tech
SeedTotal funding$8.0MFeb 2026
Kvantify

Quantum computing optimization software

Copenhagen, Denmark51–200Quantum Computing
Venture RoundTotal funding$7.7MMar 2026
Quanmatic

Quanmatic is an information and technology company that provides algorithms development and solut...

Tokyo, JapanInsurtech, Deep Tech
Series ATotal funding$5.3MSep 2024
Photon Queue

Develops quantum memories and photon-storage devices using scalable linear optics.

Champaign, United StatesDeep Tech, Hardware
SeedTotal funding$4.5MJul 2026
Yaqumo

New industries (space, quantum, Deep Tech) - Early stage

Tokyo, Japan1–10Deep Tech, Quantum Computing
Extension RoundTotal funding$4.4MApr 2026
Conductor Quantum

Conductor Quantum builds software infrastructure for quantum computing, with Coda as a natural la...

San Francisco, United States1–10Artificial Intelligence, Deep Tech
SeedTotal funding$4.0MDec 2024
Menten AI

Menten AI designs cyclic peptide therapeutics using generative AI for drug targets beyond the rea...

San Francisco, United States1–10Drug Discovery, Healthcare
SeedTotal funding$3.8MJun 2020
Peak Quantum

Quantum computing startup developing error-resilient superconducting quantum processors.

Munich, Germany1–10Quantum Computing, Semiconductors
Pre-seedTotal funding$2.6MApr 2026
Atlantic QuantumAcquired

Engineering the next generation step-change in compute.

Cambridge, United States11–50Deep Tech, Hardware
GrantTotal funding$2.3MApr 2024