Quantum Computing Startups

Groovenauts is a Japanese company that works with customers and children, though the page does not clearly state its specific business operations or products.

1 investor

Harmoniqs develops autonomous research tools aimed at researchers, with an initial focus on quantum research.

1 investor

HeQA Sec develops quantum-safe key distribution hardware that combines quantum key distribution (QKD) with a post-quantum cryptography (PQC) overlay and key management for securing fiber-optic network links. Its systems target metro, hub-and-spoke, and distributed edge network architectures.

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 high-quality synthetic diamonds for advanced technology applications through proprietary processes combining diamond growth, processing, and quality analysis. The company serves high-tech industries requiring tailored synthetic diamonds and positions itself as a European leader in the field.

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

In A Blink develops edge routers and optical wireless communication solutions for transit vehicles, offering high-speed data transmission, cybersecurity, and edge computing capabilities for vehicle-to-infrastructure connectivity.

1 investor

Ingenii runs a Quantum Hub offering quantum machine learning courses, an open-source Python algorithm library, and research tools for students, data scientists, and industry professionals. It also conducts applied QML research in life sciences and provides enablement services to help organizations identify and test quantum ML use cases.

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

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

Light Trace Photonics develops integrated photonic technologies and design tools for quantum sensing and advanced optical systems. The company specializes in translating photonics research into scalable commercial products.

1 investor

Loop AI Group is a research-driven applied AI lab that builds enterprise AI agents and orchestration tools, including the Loop Q cognitive platform for training and deploying custom Small Language Models and the Loop AI Agents Orchestra, a no-code control center for managing AI agents across vendors and integrating with legacy systems. The company also runs Loop Quantum AI Labs, which develops quantum-native AI for modeling complex systems, and serves large organizations including Fortune 100 enterprises.

1 investor

Luxquanta develops continuous-variable Quantum Key Distribution (CV-QKD) technology that generates encryption keys protected by the laws of quantum physics and integrates into existing optical fiber networks. It serves telecom operators, government institutions, critical infrastructure, data centers, hospitals, and financial services that need quantum-safe protection for long-lived sensitive data.

1 investor

Marqov builds infrastructure software for hybrid quantum-classical compute orchestration, enabling teams to manage workloads across quantum and classical hardware resources. The platform provides workload orchestration, intelligent scheduling, and hardware abstraction for developers and enterprises.

1 investor

Mesa Quantum develops chip-scale quantum sensors—including atomic clocks, gyroscopes, magnetometers, and accelerometers—for industrial and defense applications, with a focus on Alternative Position, Navigation, and Timing (Alt-PNT) as a resilient backup to GPS. Its low size, weight, and power sensors target product developers, autonomous systems, and military customers seeking GPS-independent synchronization and navigation.

1 investor

MIG Capital is a German investment fund that invests in deep technology startups with impact, including defense and dual-use technologies relevant to European technological sovereignty and security. The fund focuses on breakthrough innovations in areas like quantum computing, space technology, semiconductors, and AI that address both commercial and geopolitical challenges.

1 investor

Miraex develops quantum interconnects and quantum repeaters for distributed quantum computing, quantum networking, and quantum sensing applications in satellite communications.

1 investor

ModelLabs develops open microcavity sensing technologies for remote environmental monitoring. The company is building optical sensors for applications in environmental and industrial monitoring sectors.

1 investor

Moth applies quantum computing technology to software for media and entertainment, including content generation, game development, computer graphics, and creative production.

1 investor

NodeQuantum provides software for modelling, optimizing, and emulating quantum-safe networks and for designing quantum computing networks, including post-quantum encryption and validation of quantum key distribution hardware. It serves telecom operators, cloud providers, data centers, and businesses transitioning to quantum-safe communications.

1 investor

NodeX Cloud develops decentralized cloud storage infrastructure secured with post-quantum cryptography (Kyber1024/ML-KEM) and Reed-Solomon erasure coding, offering an S3-compatible API and EU data sovereignty. It targets EU-regulated enterprises in healthcare, defense, banking, and government subject to GDPR, NIS2, and DORA.

1 investor

nOhm Devices builds highly efficient cryogenic electronics for quantum computers and sensors, enabling in-situ integration of qubits and quantum sensors with control and readout circuits. Its components are aimed at scaling up quantum systems.

1 investor

Norma is a quantum computing company that evolved from wireless network and IoT security expertise, now positioned as a leading quantum computing enterprise in Asia with focus on quantum AI, quantum-secure solutions, and IoT security systems.

1 investor