Quantum Computing Startups

Quobly develops silicon-based quantum computers built on standard semiconductor manufacturing (300 mm wafers), producing rack-scale, data center-ready systems aimed at fault-tolerant, million-qubit machines. Its quantum computers target industrial applications in fields such as chemistry, materials science, optimization, and logistics.

4 investors

QuSecure provides a cryptographic management platform that discovers, remediates, and reports on encryption across cloud, on-premises, and legacy systems. The platform enables organizations to modernize their cryptography and transition to post-quantum encryption standards for enterprise and government customers.

4 investors

Resonance provides market intelligence, strategic advisory, due diligence, and marketing activation services focused on deep tech sectors such as quantum, space, and climate technologies. It serves corporations, investors, and public sector organizations making high-stakes decisions in emerging technology markets.

4 investors

Sitehop provides encryption technology designed for real-time data protection that prioritizes speed and quantum-readiness. The company serves organizations seeking to secure data-in-motion without compromising performance or future-proofing against quantum threats.

4 investors

Xatoms uses quantum chemistry models to design photocatalyst molecules that generate radicals from sunlight to clean polluted water. The company works at the intersection of computational chemistry and water treatment.

4 investors

Jij is a startup founded by experts in mathematical optimization and quantum technology, providing software services such as the "JijZept" series that support the process from building mathematical optimization models to implementation. It also offers project support and talent development services, targeting a range of industries with a focus on the energy value chain, on a global basis.

4 investors

Aegiq develops networked photonic quantum systems, including a quantum computer and photon sources, intended for practical large-scale deployment. Its offerings span quantum computing hardware, optical fibre security, and software tooling for building and running quantum workflows.

3 investors

Amadeus Capital Partners is a UK venture capital firm, founded in 1997, that invests in deep technology companies from seed to growth stage across three areas: Intelligence (AI, advanced computing, quantum), Human (health, medicine, wellness), and Planet (sustainability, energy, materials, space). It has backed more than 200 companies and raised over $1.3 billion for investment.

3 investors

Arqit provides encryption intelligence and quantum-safe security solutions that help organizations identify cryptographic vulnerabilities, manage post-quantum cryptography migration, and protect data against current and future threats including adversarial decryption.

3 investors

KERYS Software develops a secure virtualization platform that enables multiple isolated environments on a single physical machine with near bare-metal performance, targeting organizations requiring digital resilience and DORA/NIS2 compliance. The technology consolidates IT hardware needs while maintaining strong security guarantees through a formally proven microkernel design.

3 investors

Bifrost Electronics develops miniaturized cryogenic hardware, including quantum-limited amplifiers, to help pack more qubits into a dilution refrigerator and scale quantum computers. It serves quantum computing researchers and physicists building QPUs.

3 investors

Commutator Studios offers a tool that automatically optimizes quantum applications by finding the best execution parameters across different quantum computers, reducing errors and improving accuracy, reliability, and performance. It serves organizations running quantum circuits on real quantum hardware.

3 investors

Deteqt develops a chip-scale quantum sensing platform using diamond-on-chip technology to produce vector magnetometers on silicon wafers. Its sensors measure the full magnetic field vector and can be deployed in arrays for applications such as navigation, autonomous systems, anomaly detection, and subsurface sensing, with current field trials among airborne and marine survey operators.

3 investors

GROOVE quantum develops spin-qubit systems and integrated quantum processors, focusing on germanium-based quantum computing technology. The company serves the quantum computing industry and addresses challenges in qubit fabrication and integration.

3 investors

Iceberg Quantum designs fault-tolerant quantum computing architectures based on LDPC codes that reduce the hardware overhead for quantum error correction. The company focuses on quantum architecture to make useful quantum computing achievable sooner.

3 investors

Jmem Tek designs ASIC solutions, hardware security IP, and IC design services for quantum-resilient cybersecurity, including NIST-certified post-quantum cryptography and hardware-anchored identity authentication. Operating in the upstream semiconductor industry, it protects chips against counterfeiting, unauthorized access, and quantum-era threats.

3 investors

Keyfactor provides a unified trust control platform that consolidates certificate and cryptographic identity management across cloud, on-premises, and edge environments. The platform enables enterprises to continuously discover, assess, automate, and govern machine and workload identities throughout their hybrid infrastructure.

3 investors

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.

3 investors

MQS builds Cebule, a platform combining quantum chemistry calculations and machine learning pipelines to predict molecular properties and design experiments for R&D teams. It offers a visual dashboard over 200M+ molecules, a Python SDK, HPC compute nodes, and an AI research agent serving biopharmaceutical, materials, and chemistry researchers in academia and industry.

3 investors

NanoQT (Nanofiber Quantum Technologies) develops quantum interconnect hardware based on a proprietary ultra-low-loss nanofiber cavity that uses cavity quantum electrodynamics to link quantum processing units via photons. Its technology targets neutral-atom quantum computing and networked, modular quantum systems, aiming to enable scalable quantum computing and secure quantum communication.

3 investors

Omni Design Technologies develops high-performance analog-to-digital and digital-to-analog converter IP cores for AI infrastructure, 5G networks, automotive systems, and satellite communications. The company delivers mixed-signal IP solutions optimized for low power consumption and advanced semiconductor process nodes.

3 investors

OrangeQS provides automated testing and characterization equipment and software for quantum chips with several to hundreds of qubits. The company serves quantum hardware developers in industry and research with turnkey solutions that accelerate the quantum chip development cycle.

3 investors

Oxford Science Enterprises is a venture-building investment firm, working in partnership with the University of Oxford, that funds and creates companies based on scientific research from Oxford, Harwell and Culham. It provides capital and company-building support to spin ventures out of academic breakthroughs across deep science fields.

3 investors

Peak Quantum develops error-protected superconducting quantum processing units (QPUs) designed for fault tolerance at the hardware level, reducing the need for active quantum error correction and the number of physical qubits required. The company targets scalable, industrial-grade quantum computing and works with investors, integrators, and researchers.

3 investors