Quantum Computing Startups

Cavero Quantum develops lightweight post-quantum cryptography for constrained environments, offering key-exchange (Symmetrikey) and endpoint authentication (Authentikey) technologies that run on SIM cards, IoT sensors, and embedded devices. It provides quantum-safe endpoint authentication via a Continuous Trust Verification Protocol for organizations securing networks and connected devices.

1 investor

Cellcrypt provides mobile communications software with dual-layer post-quantum encryption for voice calls, messaging, voice notes, and file sharing. It serves enterprises and governments, offering cloud-hosted and self-hosted/air-gapped deployment options with data hosted under Swiss privacy law and GDPR compliance.

1 investor

CUbIQ Technologies develops quantum communication technology, including quantum key distribution (QKD) demonstrated in a QSFP-28 pluggable form factor. The Dutch company works in the quantum cryptography and secure communications field.

1 investor

CyberRidge develops post-quantum optical security for data-in-transit, using a technique that spreads and buries the signal under optical noise so it cannot be recorded or decrypted, protecting against harvest-now-decrypt-later attacks. Its Carmel product provides 100G+ optical transmission that substitutes the transmission line card and is aimed at organizations protecting network infrastructure against quantum-era threats.

1 investor

D-Wave is a quantum computing company building both annealing and gate-model systems, offering the Leap quantum cloud platform, hybrid solvers, and Ocean developer tools. It serves enterprises and researchers tackling optimization, simulation, and modeling problems, and also provides professional services, training, and quantum AI solutions.

1 investor

Delft Circuits builds Cri/oFlex superconducting cabling that replaces conventional wiring inside cryostats, offering higher channel density and lower thermal load as quantum I/O infrastructure. It designs, manufactures, and validates these systems in-house for the quantum computing industry.

1 investor

Diamond Quanta is commercializing the Adamantine Platform, an engineered-diamond materials and interface platform providing coatings, substrates, and active devices for semiconductor, power electronics, optics/photonics, and quantum applications. It serves consumer, automotive, aerospace/defense, and quantum photonics markets and offers prototyping, product design, and IP licensing services.

1 investor

Dirac Labs develops GPS-free quantum navigation systems that use the Earth's crustal magnetic signatures to determine location in environments where GPS is unavailable, such as underwater, underground, or indoors. The systems are designed to be passive, precise, and secure.

1 investor

finQbit develops hybrid quantum-classical computing solutions for financial risk modeling, pricing, and large-scale simulations. The platform serves financial institutions seeking to enhance risk infrastructure and computational finance capabilities.

1 investor

FirstQFM develops proprietary foundation models for quantum computing, aiming to improve the scaling and performance needed to derive business and scientific value from quantum systems. The company is based in Stockholm and launched in 2025 following an incubation period.

1 investor

G2Q Computing develops hybrid quantum-classical software that runs on High-Performance Computing devices and quantum computers to accelerate optimization and machine learning workloads. Its solutions target financial institutions (risk modeling, financial crime prevention), Earth observation and satellite data analysis, and multiphysics engineering simulations.

1 investor

Groovenauts provides technology services spanning data engineering, AI agents, and quantum computing, using forward-deployed engineers (FDE) to turn concepts into working solutions for enterprises. The company positions its offerings to support business activities that reflect local and regional characteristics.

1 investor

High Q Technologies builds quantum-enabled scientific instruments that apply microwave quantum optics techniques to electron paramagnetic resonance (EPR) spectroscopy for ultra-high sensitivity biophysical and chemical analysis. Its technology targets protein structure determination and drug discovery, serving researchers and pharmaceutical development.

1 investor

HiQuTe Diamond produces ultra-high-quality synthetic diamond plates and wafers, including boron-doped, ultra-pure, and NV-center diamonds, for use in electronics, quantum computing, and quantum sensing. Its technology stems from research at LSPM-CNRS and targets high-technology industries seeking alternatives to silicon-based materials.

1 investor

iBlades builds a quantum-safe network security platform that consolidates firewalls, VPNs, ZTNA, MDM, NAC, and SASE into one system, using software-defined P2P quantum crypto, plug-and-play edge appliances (GuardTron), and hardware-anchored mobile security. It serves government, defense, and enterprise teams across sectors such as banking, healthcare, and critical infrastructure.

1 investor

ICTK develops PUF-based (Physically Unclonable Function) hardware security chips and platforms used for IoT device authentication, digital ID, and communications security. Its technology is supplied to telecom operators, consumer electronics makers, and defense and enterprise customers, with a focus on the South Korean market.

1 investor

ID Quantique develops quantum-based cybersecurity products, including quantum random number generation and quantum key distribution for enterprise networks, as well as quantum photonic components for research. Its technology is used by governments, enterprises, and academic research labs in more than 60 countries.

1 investor

In A Blink builds VFO (Virtual Fiber Optics), a drop-in wireless replacement for Wi-Fi that uses quantum communication technology to offload large data volumes from transit vehicles to a ground-based command center at high speed. It serves public transit and mobility operators, enabling faster retrieval of onboard data such as CCTV footage, telemetry, and fare collection for analytics, security review, and predictive maintenance.

1 investor

IQM builds full-stack superconducting quantum computers, from NISQ-era to fault-tolerant systems, including quantum processing units, on-premise machines, and a cloud platform. It serves research institutions, high-performance computing centers, and enterprise customers globally, operating its own fabrication and assembly facilities.

1 investor

ISARA helps enterprises and governments modernize their cryptography and prepare for post-quantum threats, offering tools to gain visibility into algorithms, keys, and certificates and to migrate from legacy crypto to hybrid and quantum-safe systems. The company, born from BlackBerry's security team and University of Waterloo cryptography researchers, participates in global PQC standards and NIST guidance.

1 investor

Kara engineers single-crystal diamond, handling growth in its own reactors as well as processing and characterization in-house. Its diamond materials target thermal management, power electronics, quantum sensing, photonics, quantum networks, and characterized research substrates.

1 investor

Kelvin Quantum designs cryogenic electronic circuits and systems — from integrated circuits like DACs, ADCs, RF mixers, and amplifiers to full in-fridge FPGA-based control and readout platforms — that operate from room to deep cryogenic temperatures. It serves quantum hardware manufacturers, integrating supporting electronics into refrigeration infrastructure to help scale quantum computing systems.

1 investor

Ki3 Photonics develops hardware for quantum networking, enabling entanglement distribution over fiber telecommunication networks. Its products support networking applications, advanced sensing, and computing, and integrate with optical fiber and Ethernet infrastructure.

1 investor

Kvantify develops software that runs on both quantum computers and classical computing architectures (CPU/GPU) to solve chemistry and biology problems for molecular and drug discovery. Its algorithms distribute calculations across quantum and classical compute resources in high-performance computing environments to accelerate the discovery of disease-curing molecules.

1 investor