Quantum Computing Startups

qBraid provides a cloud platform for quantum computing that includes a browser-based JupyterLab IDE, an open-source SDK, and a runtime that runs programs across 20+ QPUs and simulators from 11 providers through one API. It also offers qBook, an interactive quantum curriculum with autograded labs and university partnerships, serving students, researchers, and enterprise teams.

1 investor

QC Ware operates a quantum computing business organized into three units — Quantum Services, the Q2B conference, and Promethium — serving enterprise and research customers exploring quantum applications. Its work spans quantum services, advisory on quantum hardware, and applications such as drug discovery.

1 investor

QC82 is a quantum computing company building room-temperature photonic quantum computers based on its own photonic chip designs and photodetection technology. The systems are aimed at large-scale simulations in chemistry and materials science.

1 investor

QDC develops veloxQ, a physics-inspired optimization engine intended to solve large-scale computational problems for enterprises. The company positions its technology as a bridge between classical and quantum computing.

1 investor

Quantum Experience is a portfolio management firm focused on quantum technology companies, providing market statistics, investor information, and regulatory news for investors in the quantum sector.

1 investor

Qendra builds control systems for quantum computing experiments, with a focus on trapped ions and neutral atoms in AMO (atomic, molecular, and optical) labs. Its products handle RF waveform control, region-based readout for ion and atom arrays, and multi-channel voltage generation, based on Sinara (ARTIQ) hardware.</parameter> <parameter name="founders">[]

1 investor

QEYnet is developing a global quantum key distribution (QKD) network using microsatellites to enable ultra-secure, quantum-safe encryption key exchange. It targets security-conscious organizations with data that must remain protected long-term, operating in the space-based cybersecurity and satellite technology sector.

1 investor

Qilimanjaro develops quantum computing systems designed to address the energy and scaling limits of classical computers and AI, including analog quantum processors for optimization and simulation problems. Its technology targets computational tasks such as AI workloads and quantum simulation that classical hardware cannot efficiently handle.

1 investor

QIZ provides a platform for managing cryptographic assets and preparing organizations for the transition to post-quantum cryptography. The company serves security leaders and enterprises navigating compliance and security challenges in cryptographic management.

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QMatter builds compression algorithms that use a quantum latent space to reduce industrial-scale problems so they run efficiently on quantum and conventional hardware. Its platform serves quantum hardware providers and industrial clients seeking high-performance computing solutions.

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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.

1 investor

Qodex Quantum offers tools aimed at helping enterprise quantum teams find and validate quantum computing methods that work on real hardware, positioning itself around amplifying existing teams rather than hiring. Its focus is on identifying viable quantum methods ahead of expected fault-tolerant hardware.

1 investor

QPerfect develops MIMIQ, a quantum computing emulation platform that creates hardware-accurate digital twins of quantum processors to accelerate quantum software research and development. A subsidiary of BTQ Technologies, it works with neutral-atom quantum computing platforms and academic partners such as the University of Strasbourg.

1 investor

QPICs operates a photonic integrated circuit (PIC) foundry offering fast-turnaround chip fabrication for quantum and photonics developers, aiming to shrink optical setups to chip scale. It serves the quantum technology industry with customizable waveguide fabrication and rapid R&D cycles, based in the Rocky Mountain region and serving customers worldwide.</parameter> <parameter name="hq_city">Arvada

1 investor

QSENSATO designs and fabricates integrated atomic vapor cells using laser-written, all-glass methods for compact, portable quantum sensors. Its chips support applications including optically pumped magnetometers, atomic clocks, RF sensors and gyroscopes across biomedical, space and defence, metrology, and lab-on-chip research markets.

1 investor

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.

1 investor

Quanscient develops Allsolve, a cloud-native multiphysics simulation platform that runs coupled simulations at scale, offers a Python SDK with agentic AI workflows, and trains physics-aware surrogate models (MultiphysicsAI) for design exploration. It serves R&D and engineering teams in medical devices, consumer electronics, automotive, and space, and also runs a quantum research group developing quantum algorithms for computational fluid dynamics.

1 investor

Quantasensingtec develops low-noise RF amplifiers designed to detect and strengthen weak signals while minimizing added noise. Its technology targets applications in quantum systems, astronomy, and aerospace, including communication, navigation, and sensing.

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Quantized Technologies Inc. (QTi) develops quantum networking technology, including its patent-pending QuEDGE quantum entanglement distribution system, to build quantum networks and connect quantum computers and sensors. Its first product, QuSera (part of the QTICrypt family), combines machine learning with post-quantum cryptography to secure data communications against quantum-enabled threats.

1 investor

Quantum builds post-quantum cryptographic infrastructure for EVM-compatible blockchains, including an on-chain verification layer, a signing co-processor for custody systems, and a quantum-native L1 network secured with NIST-standard lattice-based signatures (Falcon, ML-DSA). It serves blockchain and digital asset operators seeking protection against future quantum computing attacks without base-layer migration.

1 investor

QLM Technology develops a patented single-diode laser lidar system for continuous, low-cost detection and monitoring of methane and other greenhouse gas emissions. It serves industrial sectors including upstream and downstream gas, refining, wastewater, landfills, and farming.

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Quantum Optics Jena builds customized advanced photon sources and entanglement-based Quantum Key Distribution (QKD) systems for secure, tap-proof communications. It serves cybersecurity, quantum computing, and scientific research needs, and has demonstrated live quantum encryption over a German telecommunications network.

1 investor

Quantum Research Sciences is an American company developing commercial quantum computing software and quantum technologies, including its ACID-R data-repository platform, quantum sensing, and Quantum Machine Learning applications. It serves defense customers such as the USAF and works with quantum hardware providers including IBM, IonQ, Quantinuum, and QuEra.

1 investor

QuantumDiamonds builds non-destructive semiconductor testing tools that use quantum diamond microscopy and magnetic current imaging to localize chip defects, including depth information, for the advanced packaging era. It sells inspection tools and offers in-house failure analysis as a service to chipmakers for R&D, failure analysis, and production yield monitoring.

1 investor