Quantum Computing Startups

Monarch Quantum is an integrated photonics company that builds modular, plug-and-play "light engine" subsystems—combining chip-scale lasers, modulators, detectors, fiber optics, and control electronics—for quantum systems integrators. As an OEM supplier to the quantum ecosystem, it serves developers of quantum computing, quantum sensing, and quantum communications hardware.

2 investors

Munich Quantum Instruments develops superconducting nanowire single-photon detectors (SNSPDs) for quantum sensing and quantum communication applications. The company's photonic quantum sensors are designed for industrial-scale deployment in quantum key distribution, space-based optical communication, and photonic quantum computing.

2 investors

Nexus Photonics develops photonic integrated circuits built on a single chip, using wafer-scale semiconductor fabrication, automated testing, singulation, and advanced packaging to manufacture at high volume and lower cost. Its technology targets quantum and other emerging applications, including quantum sensing and AR/VR.

2 investors

Nimbix provides a supercomputing-as-a-service platform that enables data scientists, engineers, and researchers to access high-performance computing, AI/ML, and quantum computing applications without infrastructure constraints. The platform offers on-premises, cloud, or hybrid deployment options through its JARVICE service and HyperHub application catalog.

2 investors

Nomad Atomics develops quantum sensing technologies for applications across industries. The company commercializes quantum science solutions derived from research in quantum gravimetry and accelerometry.

2 investors

nVision Quantum develops POLARIS, an on-site system that uses parahydrogen-induced hyperpolarization to amplify metabolic imaging agents for real-time, non-invasive metabolic imaging with standard MRI. It targets research labs and clinical imaging workflows in the medical imaging field, offering automated dose production with ready-to-use kits.

2 investors

Oxford Ionics develops trapped-ion quantum computers using proprietary Electronic Qubit Control technology, designed for businesses to deploy quantum computing applications. The systems are manufactured through standard semiconductor supply chains and support field upgrades as computational needs scale.

2 investors

ParityQC develops architecture blueprints and an operating system for scalable quantum computers, covering applications from optimization on NISQ devices to error-corrected, general-purpose quantum computing. Its co-development approach combines quantum hardware and software, including its Parity Twine technology for implementing quantum algorithms.

2 investors

Phantom Photonics develops quantum-enhanced sensing technologies designed to operate in challenging environments where conventional sensors fail. The company serves industries requiring advanced measurement and observation capabilities in conditions others cannot access.

2 investors

Photon Queue develops quantum memory devices using linear optics technology for photon storage. The company serves applications requiring practical quantum memory solutions in quantum computing and related fields.

2 investors

Planckian develops foundational technology for large-scale quantum computers, building a quantum processor that combines superconducting circuits with a new approach to qubit control for scalability. The company operates in the quantum computing hardware space.

2 investors

POLARISqb combines quantum computing, genetics, and molecular chemistry to design novel drugs for previously undruggable diseases. The company targets pharmaceutical development using advanced computational methods to accelerate drug discovery.

2 investors

Q-Block Computing develops quantum-inspired hardware "Q-Block modules" that integrate photonic, atomic, and control layers to generate and distribute quantum coherence as infrastructure for timing, networking, and computation applications. The company pursues fundamental science in quantum systems while commercializing these modules for industrial markets.

2 investors

Q99 offers a quantum-classical AI platform that acts as a middle layer to connect fragmented enterprise data, recover lost context across silos, and produce probabilistic predictions for real-time decision-making. It targets enterprises in sectors such as pharma, aerospace, national security, logistics/supply chain, finance, and energy.

2 investors

Gauge is a Python package that computes the theoretical optimal error threshold for quantum error correcting codes and noise models by mapping the decoding problem onto a statistical mechanical spin model and running Monte Carlo simulation. It is part of the Plaquette family of tools and serves quantum hardware teams, QEC researchers, and decoder developers working on fault tolerance.

2 investors

QCentroid provides a quantum-as-a-service platform that enables organizations to design, test, and deploy quantum applications across multiple hardware providers without vendor lock-in. The platform serves developers, researchers, and business teams seeking to integrate quantum computing into their existing infrastructure and workflows.

2 investors

Qernel Technologies builds full-stack autonomous computing systems, working on efficient cryptography and technology aimed at accelerating fault-tolerant quantum computers.

2 investors

QMill develops quantum algorithms for the noisy intermediate-scale quantum (NISQ) era, offering proof-of-concept algorithms that run on simulators or existing NISQ computers. It works with enterprise customers to demonstrate business applications of quantum computing.

2 investors

Qnity builds a quantum-electrochemical chip using nanogold-silicon electrodes and quantum sensing to perform ultra-sensitive, real-time molecular screening and binding affinity analysis across molecule sizes, from small organics to biologics. The platform targets pharmaceutical and drug discovery use cases, including therapeutic development, drug prediction validation, and precision diagnostics.

2 investors

QNu Labs develops quantum-based security solutions, including quantum cryptography, to address cybersecurity challenges of classical computing. Based in India, it describes itself as the country's first quantum cryptography company.

2 investors

Qolab applies advanced semiconductor fabrication and integration to build superconducting quantum hardware, addressing scaling bottlenecks such as qubit yield and component integration. It works with semiconductor companies, government programs, and research institutions, and offers a deployable quantum processing unit platform for hardware research and workforce development.

2 investors

QSENSATO develops quantum sensing technologies and solutions. The company, founded by academic researchers, applies quantum science to practical sensing applications.

2 investors

Qtas develops a quantum-sensor-based microscopy platform, described as the world's smallest MRI, that detects, sorts, and recovers intact individual rare cells (such as circulating tumor cells and rare immune cells) directly from unprocessed biological samples like whole blood or spinal fluid. The platform serves pharma, biotech, and liquid biopsy partners as an upstream tool feeding downstream molecular, genomic, proteomic, and single-cell analysis.

2 investors

QTi is a University of Calgary spin-out working in quantum networking and cryptography, building technology to distribute quantum entanglement, create secure quantum networks toward a quantum internet, and protect classical network communications against quantum and AI threats. It develops quantum-secure data exchange solutions for organizations that need to defend network communications.

2 investors