Advanced Diamond Technologies

Advanced Diamond Technologies (ADT) is a US materials company founded in 2003 that develops advanced diamond thin film materials and quantum-grade diamond products for quantum computing, quantum sensing, and quantum photonics applications, providing chemical vapor deposition (CVD) diamond films, diamond-on-insulator substrates, and custom diamond solutions with controlled nitrogen-vacancy centers and other quantum defects, serving quantum technology companies and research institutions with specialized diamond materials that enable quantum sensors, quantum memory devices, and quantum electronic applications requiring the exceptional properties of synthetic diamond for quantum information processing.

Aliro Quantum

Aliro Quantum is a US quantum networking software company founded in 2019 that develops quantum network orchestration and management software platforms for quantum communication networks, creating software solutions that enable the coordination, control, and optimization of quantum network resources across distributed quantum systems, providing network orchestration tools, quantum routing protocols, and network management systems that enable organizations to deploy, operate, and scale quantum communication networks for secure communications, distributed quantum computing, and quantum internet applications requiring sophisticated software-defined quantum networking capabilities.

Amazon Braket

Amazon Braket is AWS’s fully managed quantum computing service that enables researchers, developers, and businesses to explore and experiment with quantum computing through a single interface. Launched in 2020, Braket provides access to quantum computers from multiple hardware providers including IonQ, Rigetti, OQC, and others, as well as high-performance quantum simulators for algorithm development and testing. The service integrates seamlessly with other AWS services, offering tools for quantum circuit design, hybrid quantum-classical algorithms, and result analysis. Amazon Braket supports multiple quantum programming frameworks and provides Jupyter notebook environments for quantum computing education and research. The platform serves a diverse customer base including academic institutions, enterprises, and government agencies working on quantum applications in optimization, machine learning, and scientific simulation. AWS’s quantum computing initiative also includes the Center for Quantum Computing at Caltech and quantum networking research, establishing Amazon as a major player in the quantum cloud services ecosystem.

Analog Devices

Analog Devices develops quantum control electronics and precision analog components for quantum computing applications, leveraging their expertise in high-performance analog and mixed-signal integrated circuits to create specialized electronics for quantum state control, measurement, and signal processing in quantum systems, providing essential electronic components and systems that enable precise manipulation and readout of qubits in various quantum computing platforms including superconducting, trapped ion, and photonic quantum computers.

Company Information

• Founded: 2020
• Country: USA
• Website: https://analog.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

AOSense

AOSense is a US quantum sensing company founded in 2004 as a Stanford University spinout by Brenton Young and Mark Kasevich that develops atom-optic quantum sensors for inertial navigation, precision timing, and gravity measurement, commercializing cold atom interferometry technology for compact gravimeters, accelerometers, gyroscopes, and atomic clocks that achieve laboratory-grade performance in portable field-deployable systems, serving DARPA, NASA, Air Force, Army, Navy, and intelligence community with quantum sensors for geophysical surveying, precision navigation, resource exploration, and underground monitoring applications that leverage laser-cooled atoms as ultra-precise test masses for measuring gravitational and inertial forces.

ApexQubit

ApexQubit is a US quantum software company founded in 2021 that develops quantum computing software platforms and tools for quantum algorithm development, quantum circuit optimization, and quantum application deployment, providing software solutions that enable researchers and enterprises to harness quantum computing capabilities for solving complex computational problems across various industries including finance, optimization, and scientific computing, with focus on making quantum computing more accessible through user-friendly software interfaces.

Company Information

• Founded: 2021
• Country: USA
• Website: https://apexqubit.com
• Categories: quantum software

Related Companies

Explore other quantum computing companies in similar categories or regions.

AT&T Quantum

AT&T is researching quantum technologies for telecommunications applications including quantum key distribution, quantum-safe cryptography, and quantum networking infrastructure for secure communications. The company explores quantum technologies for network optimization, quantum-enhanced security protocols, and quantum communication systems that could provide ultra-secure connectivity for government, enterprise, and consumer applications. AT&T collaborates with quantum technology companies and research institutions to develop quantum networking capabilities, investigate quantum advantages for telecommunications infrastructure, and prepare network systems for quantum-safe security implementations. The company’s quantum research focuses on practical quantum applications that could enhance network security, improve communication reliability, and enable new quantum-enhanced services for customers requiring the highest levels of security and performance.

Atlantic Quantum

Atlantic Quantum is an MIT spinout founded in 2022 that is developing next-generation superconducting quantum computers using fluxonium qubits, a promising alternative to transmon qubits that offers superior coherence properties and reduced sensitivity to charge noise. The company was founded by leading quantum computing researchers from MIT including Peter Gruter, Youngkyu Sung, and others who have pioneered fluxonium qubit technology. Atlantic Quantum’s approach leverages the unique properties of fluxonium qubits, which can achieve microsecond-scale coherence times and strong anharmonicity, potentially enabling more efficient quantum error correction and higher-fidelity quantum operations. The company has secured seed funding to develop their quantum computing platform and establish partnerships with research institutions and potential customers. Atlantic Quantum represents the next generation of quantum computing startups emerging from world-class research institutions, bringing cutting-edge academic research into commercial applications. Their focus on advanced qubit technology positions them to potentially leapfrog existing quantum computing approaches as the industry moves toward fault-tolerant quantum systems.

Atom Computing

Atom Computing leads neutral atom quantum computing with their record-breaking 1,180 operational qubits in a 1,225-site array announced in 2023, founded by Benjamin Bloom (PhD Physics, University of Colorado) and Jonathan King (PhD Chemical Engineering, UC Berkeley) in 2018 to use arrays of neutral atoms trapped by optical tweezers as dynamically reconfigurable qubits with high connectivity, partnering with Microsoft and government agencies including DARPA for applications in optimization, machine learning, and quantum simulation with scalable architecture targeting millions of qubits.

Bleximo

Bleximo is a Berkeley-based quantum computing startup founded in 2017 that develops application-specific quantum accelerators using superconducting qubits, pioneering a co-design methodology that tailors quantum processors, control hardware, and algorithms to solve specific high-value problems rather than building general-purpose systems, providing enhanced performance and shorter time-to-market for applications in finance, pharmaceuticals, logistics, and advanced materials through their full-stack superconducting quantum computing platform.

Company Information

• Founded: 2017
• Country: USA
• Website: https://bleximo.com
• Categories: quantum processors

Key People

Sergio Boixo (Co-founder), Vadim Smelyanskiy (Co-founder)

BlueQubit

BlueQubit is a US quantum software company founded in 2022 that develops quantum algorithms and software platforms for quantum computing applications, focusing on creating accessible quantum development tools and algorithm implementations that enable researchers and developers to build and deploy quantum applications across various quantum hardware platforms, providing software solutions for optimization, machine learning, and simulation problems that can benefit from quantum computing approaches.

Company Information

• Founded: 2022
• Country: USA
• Website: https://bluequbit.io
• Categories: quantum software

Key People

Stefan Krastanov (Co-founder, CEO), Yanik Oberholzer (Co-founder)

Broadcom

Broadcom develops quantum photonics components and integrated photonic solutions for quantum computing and quantum communication applications, leveraging their semiconductor and photonics expertise to create specialized components including quantum light sources, photonic integrated circuits, and optical components essential for photonic quantum systems, providing the foundational photonic infrastructure needed for scalable photonic quantum computing, quantum networking, and quantum sensing applications through advanced silicon photonics technology.

Company Information

• Founded: 2021
• Country: USA
• Website: https://broadcom.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

Department of Energy

The US Department of Energy (DOE) leads major quantum computing and quantum information science initiatives through its Office of Science, national laboratories, and research programs, coordinating quantum research across institutions including Argonne, Oak Ridge, and Lawrence Berkeley National Labs, funding quantum computing testbeds, quantum network development, and quantum algorithm research for scientific computing applications, overseeing the National Quantum Information Science Research Centers and supporting the National Quantum Initiative to advance US leadership in quantum technologies for energy, materials science, and scientific discovery applications.

EeroQ

EeroQ develops innovative helium-ion quantum processors using a unique approach that employs helium ions to create qubits with potentially superior coherence properties and reduced environmental sensitivity compared to traditional quantum computing platforms, aiming to build scalable quantum systems for computational applications in optimization and simulation.

Company Information

• Founded: 2017
• Country: USA
• Website: https://eeroq.com
• Categories: quantum processors

Key People

Nicholas Farina (Co-founder, CEO), John Levy (Co-founder)

Related Companies

Explore other quantum computing companies in similar categories or regions.

EuQlid

EuQlid develops advanced trapped ion quantum systems with focus on high-fidelity qubit operations and scalable ion trap architectures, providing quantum computing solutions for research and commercial applications that require precise atomic control and long coherence times for quantum simulation and optimization problems.

Company Information

• Founded: 2021
• Country: USA
• Website: https://euqlid.com
• Categories: quantum processors

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

FormFactor

FormFactor provides quantum test and measurement solutions including cryogenic probing systems, quantum device test interfaces, and specialized measurement equipment that enable the characterization and testing of quantum devices at ultra-low temperatures required for quantum computing and quantum electronics applications.

Company Information

• Founded: 2020
• Country: USA
• Website: https://formfactor.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

GlobalFoundries

GlobalFoundries leverages its advanced semiconductor manufacturing capabilities to provide quantum chip fabrication services for quantum computing companies, offering specialized processes and clean room facilities for producing superconducting qubits and quantum devices using established semiconductor manufacturing infrastructure.

Company Information

• Founded: 2021
• Country: USA
• Website: https://gf.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Google Quantum AI

Google Quantum AI achieved the historic milestone of quantum supremacy in October 2019 with their 53-qubit Sycamore processor completing a task in 200 seconds that would take classical supercomputers thousands of years, building on quantum research that began in 2006 under Hartmut Neven with the formal Quantum AI team established in 2013 and John Martinis joining from UCSB in 2014, developing Cirq and TensorFlow Quantum frameworks as part of Alphabet’s strategy to build fault-tolerant quantum computers for applications in drug discovery, materials science, and cryptography.

Hadamard LLC

Hadamard LLC is a quantum technology publishing company that produces content and resources for the quantum computing industry. The company publishes Quantum Zeitgeist, a leading publication covering quantum computing developments, industry analysis, and technological advances in the quantum sector. Hadamard LLC focuses on creating educational content, market insights, and industry commentary to promote understanding of quantum computing applications and developments across academia, industry, and government sectors.

Company Information

• Founded: 2020
• Country: USA
• Website: https://hadamard2.com
• Categories: quantum education, quantum research

Key People

Unknown

High Precision Devices

High Precision Devices (HPD) is a US cryogenic instrumentation company founded in 1993 that develops specialized ultra-low temperature measurement and control instruments for quantum computing and quantum research applications, providing precision thermometry, cryogenic switches, temperature controllers, and measurement electronics that enable accurate monitoring and control of quantum systems operating at millikelvin temperatures, serving quantum computing companies, research institutions, and national laboratories with high-precision instrumentation essential for quantum device characterization, quantum state control, and cryogenic system optimization in dilution refrigerators and other ultra-low temperature environments.

HYPRES

HYPRES specializes in superconducting electronics and rapid single flux quantum (RSFQ) technology for quantum computing applications, providing advanced cryogenic electronics, superconducting circuits, and quantum control systems that enable precise manipulation and readout of quantum states in superconducting quantum processors with over four decades of expertise in superconducting technologies.

Company Information

• Founded: 1983
• Country: USA
• Website: https://hypres.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

IBM Quantum

IBM Quantum operates one of the world’s most comprehensive quantum computing programs, developing superconducting quantum processors including the 433-qubit Osprey system unveiled in November 2022 while providing cloud access through the IBM Quantum Experience platform launched in May 2016 to over 400,000 users using their Qiskit framework, with partnerships spanning Fortune 500 companies, universities, and governments to advance practical quantum computing applications in optimization, machine learning, and quantum-safe cryptography.

Infleqtion

Infleqtion (formerly ColdQuanta) is a leading quantum technology company that develops atom-based quantum solutions built on Nobel Prize-winning neutral atom technology, specializing in quantum computing, quantum sensing, atomic clocks, and quantum RF systems that provide orders-of-magnitude improvements in precision and performance across national security, enterprise, and infrastructure markets, with recent achievements including a 1600-atomic-qubit array and $100 million Series C funding to advance their roadmap toward 100 error-corrected logical qubits by 2028-2029.

Intel Quantum

Intel Quantum leverages the company’s semiconductor manufacturing expertise to develop silicon spin qubit technology including their Tunnel Falls quantum processor chip, offering advantages in manufacturability and integration with classical electronics while researching cryogenic control electronics and quantum networking to build scalable quantum computing systems using familiar silicon fabrication processes.

Company Information

• Founded: 2015
• Country: USA
• Website: https://intel.com/quantum
• Categories: quantum processors

Key People

Jim Clarke (Director), Stefano Pellerano (Principal Engineer)

IonQ

IonQ leads the trapped ion quantum computing sector as the first pure-play quantum company to go public on NYSE in 2021, founded by Christopher Monroe and Jungsang Kim in 2015 to develop quantum computers using individual trapped atoms as qubits with industry-leading fidelities, accessible through AWS Braket, Azure Quantum, and Google Cloud, receiving $636 million in gross proceeds from its SPAC public offering to accelerate commercialization while serving Fortune 500 companies and research institutions.

Keysight Technologies

Keysight Technologies provides advanced quantum test and measurement solutions including quantum computing test systems, qubit characterization tools, and precision measurement instruments that enable quantum researchers and manufacturers to validate, optimize, and scale quantum devices and systems across various quantum technology platforms.

Company Information

• Founded: 2014
• Country: USA
• Website: https://keysight.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Lawrence Berkeley National Lab

Lawrence Berkeley National Laboratory operates the Advanced Quantum Testbed (AQT), a collaborative research facility established in 2016 that provides researchers worldwide with access to cutting-edge superconducting quantum processors for quantum computing research and development, serving as a user facility for the quantum information science community to test quantum algorithms, explore quantum error correction, and advance quantum computing hardware and software through partnerships with academia, industry, and government agencies working on quantum technologies.

Lightsynq

Lightsynq develops advanced photonic quantum solutions including quantum light sources, photonic integrated circuits, and quantum networking components to enable scalable photonic quantum computing and quantum communication systems for applications requiring room-temperature operation and network connectivity.

Company Information

• Founded: 2022
• Country: USA
• Website: https://lightsynq.com
• Categories: quantum processors

Key People

Wolfgang Tittel (Co-founder), Christoph Marquardt (Co-founder)

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Lockheed Martin Quantum

Lockheed Martin has been a pioneering customer and developer of quantum computing technology since becoming the first customer to purchase a D-Wave quantum computer in 2010 for optimization and machine learning applications in aerospace and defense. The company operates quantum computing research facilities and has integrated quantum technologies into various defense applications including secure communications, advanced radar systems, navigation, and cybersecurity solutions. Lockheed Martin collaborates with leading quantum companies and research institutions to develop quantum-enhanced capabilities for national security applications, investing in quantum sensing technologies for improved detection and measurement systems, quantum communications for secure military networks, and quantum computing applications for complex optimization problems in aircraft design, mission planning, and logistics coordination across their aerospace and defense portfolio.

MagiQ Technologies

MagiQ Technologies is a US quantum security pioneer founded in 1999 in Somerville, Massachusetts that achieved the historic milestone of delivering the world’s first commercial quantum key distribution product (Navajo) in 2003, followed by additional QKD systems including QPN 5505, QPN 7505, and QPN 8505 released in 2004-2006, providing quantum cryptography solutions based on the laws of quantum mechanics that generate truly random encryption keys impossible to intercept, serving US Department of Energy, DARPA, US Army, Air Force, NASA, and other government agencies with advanced network security and quantum-safe key distribution systems that deliver fool-proof defense against cryptographic challenges.

Maybell Quantum

Maybell Quantum develops advanced cryogenic quantum systems and ultra-low temperature solutions specifically designed for quantum computing applications, providing dilution refrigerators, cryogenic electronics, and thermal management systems that enable quantum processors to operate at the millikelvin temperatures required for quantum coherence.

Company Information

• Founded: 2021
• Country: USA
• Website: https://maybellquantum.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

MemQ

MemQ develops quantum memory solutions and quantum storage systems that enable the temporary storage and retrieval of quantum information, providing essential components for quantum networks, quantum repeaters, and distributed quantum computing applications where quantum states need to be preserved over time and distance.

Company Information

• Founded: 2022
• Country: USA
• Website: https://memq.com
• Categories: quantum processors

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Menten AI

Menten AI is a pioneering biotechnology company that combines quantum computing, artificial intelligence, and protein engineering to revolutionize drug discovery and design. Founded in 2018 by CEO Vikram Mulligan and leveraging research from the Baker Lab at the University of Washington, the company uses quantum-enhanced algorithms to solve complex protein folding and design problems that are computationally intractable for classical computers. Menten AI’s platform enables the design of novel protein therapeutics, including peptides and small proteins, by exploring vast sequence spaces and optimizing for desired properties such as stability, specificity, and manufacturability. The company’s quantum computing approach provides advantages in sampling complex conformational states and optimizing multi-objective design problems inherent in drug discovery. Menten AI has developed a pipeline of proprietary therapeutic candidates and offers computational design services to pharmaceutical partners. Their technology represents a convergence of quantum computing and biotechnology that could accelerate the development of new medicines for diseases including cancer, autoimmune disorders, and infectious diseases.

Merck Quantum

Merck & Co. explores quantum computing applications for pharmaceutical research, focusing on quantum algorithms for drug discovery, molecular modeling, and clinical trial optimization to accelerate therapeutic development. The company investigates quantum machine learning for analyzing complex biological data, protein-drug interactions, and personalized medicine approaches that could enhance pharmaceutical research capabilities. Merck collaborates with quantum computing companies and research institutions to leverage quantum advantages in computational chemistry, vaccine development, and therapeutic optimization, exploring quantum technologies that could improve drug discovery processes, reduce development timelines, and enhance therapeutic efficacy across oncology, immunology, and infectious disease research programs for advancing global health outcomes.

Mesa Quantum

Mesa Quantum develops chip-scale quantum sensing technologies that integrate quantum sensors with advanced semiconductors to create miniaturized quantum sensing devices for precision measurement applications, focusing on atomic magnetometry, inertial navigation, and quantum sensing solutions that can be deployed in portable and mobile platforms, enabling quantum-enhanced sensing capabilities for defense, aerospace, and commercial applications requiring ultra-precise measurements in challenging environments where traditional sensors cannot achieve required performance levels.

Company Information

• Founded: 2019
• Country: USA
• Website: https://mesaquantum.com
• Categories: quantum processors

Key People

Scott Faris (Founder, CEO)

Microsoft Azure Quantum

Microsoft Azure Quantum is a comprehensive cloud-based quantum computing platform that provides unified access to diverse quantum hardware and software tools through Microsoft’s global cloud infrastructure. Launched in 2019, the platform integrates quantum computers from leading providers including IonQ, Quantinuum, Rigetti, and others, allowing developers to choose the most suitable quantum hardware for their specific applications. Azure Quantum features Q#, Microsoft’s quantum programming language, along with the Quantum Development Kit and integration with popular development environments. The platform offers quantum simulators, resource estimation tools, and hybrid quantum-classical computing capabilities that enable researchers and businesses to explore quantum advantage across optimization, chemistry, and machine learning applications. Microsoft’s quantum initiative extends beyond cloud services to include research in topological qubits and quantum networking, positioning Azure Quantum as a comprehensive ecosystem for quantum computing development. The platform serves academic researchers, enterprises, and government organizations, providing both educational resources and production-ready quantum computing services.

NanoSonic

NanoSonic develops advanced nanomaterials and coatings for quantum computing applications including low-loss dielectric materials, superconducting films, and specialized substrates that enhance the performance of quantum devices by reducing decoherence and improving qubit quality factors in superconducting quantum systems.

Company Information

• Founded: 1998
• Country: USA
• Website: https://nanosonic.com
• Categories: quantum processors

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Nokia Bell Labs

Nokia Bell Labs conducts advanced quantum networking and quantum communications research as part of their fundamental research programs, investigating quantum internet technologies, quantum network protocols, quantum-safe communications, and quantum information processing for next-generation telecommunications infrastructure, developing quantum networking solutions that could enhance network security, enable distributed quantum computing, and support quantum-enhanced applications, collaborating with academic institutions and industry partners to advance the scientific understanding and practical implementation of quantum technologies for telecommunications and networking applications.

Northrop Grumman

Northrop Grumman develops quantum computing applications for defense and aerospace sectors, focusing on quantum technologies for secure communications, quantum sensing, quantum radar, and quantum computing systems that provide military and intelligence advantages for national security applications.

Company Information

• Founded: 2020
• Country: USA
• Website: https://northropgrumman.com
• Categories: quantum defense

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

NVIDIA

NVIDIA provides quantum computing services and infrastructure through their CUDA Quantum platform and DGX Quantum systems that enable hybrid quantum-classical computing by combining quantum processors with NVIDIA’s GPU-accelerated computing platform, offering quantum simulation capabilities, quantum circuit optimization, and quantum machine learning tools that leverage classical GPU computing to enhance quantum algorithm development and execution across various quantum hardware platforms.

Company Information

• Founded: 2021
• Country: USA
• Website: https://nvidia.com/quantum
• Categories: quantum consulting

Key People

Timothy Costa (Director HPC), Steve Scott (VP Engineering)

Pfizer

Pfizer investigates quantum computing applications for pharmaceutical research and drug discovery, exploring quantum algorithms for molecular modeling, drug design optimization, and clinical trial analytics that could accelerate the development of new vaccines and therapeutic treatments, collaborating with quantum computing companies and academic institutions to leverage quantum simulation capabilities for understanding complex biological systems, protein interactions, and drug mechanisms of action, contributing to the pharmaceutical industry’s adoption of quantum technologies to enhance research productivity, reduce development costs, and improve patient outcomes through more effective drug discovery and personalized medicine approaches.

Physical Sciences Inc

Physical Sciences Inc (PSI) is a research and development company founded in 1973 that has developed extensive capabilities in quantum sensing and quantum technology applications for defense and commercial markets. The company specializes in advanced sensing technologies including quantum-enhanced magnetometers, atomic clocks, and precision measurement systems for navigation, geophysical surveying, and scientific instrumentation. PSI develops quantum sensors based on atomic physics principles for applications in magnetic field sensing, gravitational measurements, and inertial navigation systems that provide superior performance compared to classical sensors. The company’s quantum technology research spans fundamental physics research, sensor development, and system integration for government and commercial customers, contributing to advances in quantum sensing technologies for aerospace, defense, and scientific applications with particular expertise in cold atom systems and precision measurement techniques.

POLARISqb

POLARISqb is a US quantum biotechnology company founded in 2020 that applies quantum computing and quantum-inspired algorithms to accelerate drug discovery and development, using quantum molecular simulation and optimization techniques to identify novel drug candidates and optimize molecular properties more efficiently than classical computational methods, focusing on leveraging quantum advantage for pharmaceutical applications including drug design, molecular modeling, and therapeutic target identification to reduce drug development timelines and costs.

Project Eleven

Project Eleven is a US-based cybersecurity company founded in 2021, developing post-quantum cryptographic infrastructure for blockchains and digital assets to secure them against future quantum computing threats. The company specializes in quantum-resistant encryption technologies, post-quantum cryptographic protocols, and blockchain security solutions designed to maintain security even when quantum computers become capable of breaking traditional cryptographic methods. Project Eleven provides quantum-safe security solutions for cryptocurrency platforms, blockchain networks, digital asset management, and decentralized finance applications, helping organizations prepare for the quantum computing era. The company develops cryptographic libraries, security protocols, and consulting services for blockchain companies and cryptocurrency platforms seeking to implement quantum-resistant security measures.

PsiQuantum

PsiQuantum develops fault-tolerant photonic quantum computers targeting one million physical qubits using silicon photonic chips and standard semiconductor manufacturing, founded by Jeremy O’Brien, Terry Rudolph, Mark Thompson, and Pete Shadbolt with over $2.1 billion raised across multiple funding rounds including a $750 million round led by BlackRock at a $6 billion valuation in 2025, bypassing near-term NISQ systems to focus exclusively on utility-scale quantum computing for drug discovery, materials science, and cryptography applications with planned quantum data centers in Australia and the United States.

qAIntum.ai

qAIntum.ai develops quantum neural networks and quantum artificial intelligence algorithms that leverage quantum computing principles to enhance machine learning capabilities, focusing on quantum-enhanced AI models for pattern recognition, optimization, and data analysis applications that could provide advantages over classical AI approaches.

Company Information

• Founded: 2021
• Country: USA
• Website: https://qaintum.ai
• Categories: quantum software

Key People

Jonathan Allcock (Co-founder, CEO), Laszlo Gyongyosi (Co-founder, CTO)

Related Companies

Explore other quantum computing companies in similar categories or regions.

qBraid

qBraid is a US quantum computing platform company founded in 2021 that provides the world’s most connected cloud-based quantum development environment, offering unified access to 24+ quantum devices from Amazon Braket, Azure Quantum, and other providers through a single interface, supporting 18+ quantum SDKs with cross-framework conversion capabilities and qBraid Lab IDE, serving over 18,000 quantum developers with no-setup-required access to quantum hardware, simulators, and development tools for research and enterprise quantum applications.

QC Ware

QC Ware provides enterprise quantum computing software and consulting services through their Forge platform, enabling companies to develop and deploy quantum algorithms for optimization, machine learning, and simulation applications while offering quantum-ready solutions and quantum advantage assessments for businesses preparing for the quantum computing transition.

Company Information

• Founded: 2014
• Country: USA
• Website: https://qcware.com
• Categories: quantum software, quantum consulting

Key People

Stefan Woerner (CEO), Matt Johnson (Co-founder)

Investment Information

• Status: private
• Total Raised: $31.5M
• Last Valuation: $200M

Recent Funding Rounds

• 2021-02-24: series-b - $25M - Series B funding for quantum computing software and cloud services
• 2018-04-10: series-a - $6.5M - Series A funding round

Related Companies

Explore other quantum computing companies in similar categories or regions.

Qrypt

Qrypt is a US quantum-secure encryption company founded in 2017 that develops distributed quantum key generation technology eliminating the need to transmit encryption keys, using the BLAST protocol to enable independent symmetric key generation at multiple endpoints without key transmission risks, leveraging quantum random number generation through partnerships with Los Alamos National Labs to provide cloud-based quantum entropy services achieving 1.5 Gbps data rates, offering quantum-secure encryption solutions integrated with NVIDIA BlueField-3 DPUs and Megaport networks to protect against ‘harvest now, decrypt later’ attacks with anti-obsolescent architecture that remains secure even against future quantum computers.

Quabacus

Quabacus is a quantum computing software company developing quantum algorithms and applications for complex optimization problems, focusing on quantum solutions for supply chain optimization, financial portfolio management, and resource allocation challenges. The company creates quantum software tools and consulting services for enterprises seeking to leverage quantum computing advantages in business optimization applications, working with Fortune 500 companies to implement quantum-enhanced solutions for logistics, scheduling, and decision-making processes. Quabacus provides quantum algorithm development services, quantum computing consulting, and hybrid classical-quantum optimization platforms that enable businesses to explore quantum computing benefits while integrating with existing enterprise systems and workflows.

Quantum Circuits Inc

Quantum Circuits Inc develops superconducting quantum computers with focus on novel qubit designs and quantum error correction techniques, working to advance the scalability and performance of superconducting quantum systems through innovative circuit architectures and control methodologies for practical quantum computing applications.

Company Information

• Founded: 2015
• Country: USA
• Website: https://quantumcircuits.com
• Categories: quantum processors

Key People

Robert Schoelkopf (Founder), Luigi Frunzio (Co-founder)

Investment Information

• Status: private
• Total Raised: $80M
• Last Valuation: $300M

Recent Funding Rounds

• 2024-08-15: series-b - $60M - Series B funding for dual-rail qubit quantum systems with built-in error detection
• 2021-03-18: series-a - $20M - Series A funding round

Related Companies

Explore other quantum computing companies in similar categories or regions.

Quantum Computing Inc

Quantum Computing Inc develops quantum software platforms and applications that enable organizations to solve complex optimization problems using quantum and quantum-inspired algorithms, providing accessible quantum computing solutions for businesses without requiring deep quantum expertise through their ready-to-use quantum applications and consulting services.

Company Information

• Founded: 2013
• Country: USA
• Website: https://quantumcomputinginc.com
• Categories: quantum software

Key People

William McGann (CEO), Robert Liscouski (Executive Chairman)

Investment Information

• Status: public
• Ticker: QUBT
• Total Raised: $300M
• Market Cap: $8.2B (September 2025)
• Last Valuation: $8.2B

Recent Funding Rounds

• 2025-06-17: strategic - $200M - Private placement of common stock and warrants
• 2025-01-09: strategic - $100M - Private placement of common stock

Related Companies

Explore other quantum computing companies in similar categories or regions.

Quantum Design

Quantum Design specializes in cryogenic measurement systems and ultra-low temperature equipment for quantum research and quantum device characterization, providing SQUID magnetometers, dilution refrigerators, and precision measurement instruments that enable scientists to study quantum phenomena and develop quantum technologies over four decades of innovation.

Company Information

• Founded: 1982
• Country: USA
• Website: https://qd-usa.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Quantum Economic Development Consortium

Quantum Economic Development Consortium serves as a collaborative industry consortium that brings together quantum technology companies, research institutions, and government agencies to accelerate quantum technology development and establish quantum supply chains, standards, and workforce development programs across the United States.

Company Information

• Founded: 2018
• Country: USA
• Website: https://quantumconsortium.org
• Categories: quantum research

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Quantum Industries

Quantum Industries is a US quantum technology company founded in 2021 that develops comprehensive quantum infrastructure solutions including specialized components, systems, and services essential for quantum computing operations, focusing on providing the supporting infrastructure and ecosystem needed for quantum technologies to operate effectively, serving quantum computing companies, research institutions, and enterprises with the foundational infrastructure required to build, deploy, and maintain quantum computing systems and applications.

Company Information

• Founded: 2021
• Country: USA
• Website: Not available
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

Quantum Xchange

Quantum Xchange is a US quantum security company founded in 2018 that develops quantum-safe key distribution systems and quantum cryptography solutions for protecting sensitive communications and data against both classical and future quantum computing threats, providing quantum key distribution (QKD) networks and quantum-safe encryption services for government agencies, financial institutions, and enterprises requiring ultra-secure communications infrastructure that will remain secure even against quantum computer attacks.

Company Information

• Founded: 2018
• Country: USA
• Website: https://quantumxc.com
• Categories: quantum security

Key People

John Preskill (Chairman), Eddy Zervigon (CEO)

Qubitekk

Qubitekk specializes in quantum networking hardware including quantum key distribution systems, quantum random number generators, and quantum communication components that enable secure quantum networks and quantum internet infrastructure for government, defense, and commercial applications requiring ultra-secure communications.

Company Information

• Founded: 2012
• Country: USA
• Website: https://qubitekk.com
• Categories: quantum communications

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

QuEra Computing

QuEra Computing emerged from groundbreaking research at Harvard University and MIT to commercialize neutral atom quantum computing technology, developing programmable quantum simulators and quantum computers with unprecedented flexibility. The company’s platform uses arrays of neutral atoms trapped in optical tweezers, allowing for dynamic reconfiguration of qubit connectivity and analog quantum simulation capabilities. QuEra’s systems have achieved significant milestones including 256-qubit quantum simulations and demonstrations of quantum optimization algorithms. Their Aquila quantum computer, accessible through Amazon Braket, represents one of the most powerful quantum simulators available commercially. The company’s technology enables applications in quantum machine learning, optimization, and many-body physics simulation that are difficult to achieve with other quantum computing approaches. Founded by leading quantum physicists including Mikhail Lukin and Markus Greiner, QuEra combines deep scientific expertise with commercial focus, targeting near-term quantum advantage in optimization problems and scientific simulation applications.

Qunnect

Qunnect is a US quantum networking hardware company founded in 2017 that develops quantum network infrastructure components and systems for quantum internet applications, creating hardware solutions that enable quantum communication networks, quantum key distribution systems, and quantum information transmission over various network topologies, providing essential networking hardware components including quantum repeaters, quantum switches, and quantum network interfaces that enable the construction and operation of large-scale quantum communication networks for secure communications, distributed quantum computing, and quantum sensing applications requiring reliable quantum information transfer.

QuSecure

QuSecure is a US post-quantum cybersecurity company founded in 2019 that developed the industry’s first end-to-end post-quantum cybersecurity platform QuProtect, providing crypto-agility orchestration that protects against classical, AI, and quantum computing threats without requiring quantum hardware, selected by the US Army for enhanced post-quantum cryptography suite research and recognized with Frost & Sullivan’s 2024 Global Product Leadership Award, serving banking, healthcare, space/satellite, defense, and IT enterprises with their breakthrough QuEverywhere solution that enables quantum-safe encryption for websites and mobile applications without end-user installation requirements.

Raytheon

Raytheon Technologies develops quantum radar systems and quantum defense applications for military and security applications, leveraging quantum sensing and quantum information technologies to create advanced radar systems with enhanced detection capabilities, quantum-secured communications, and quantum sensing solutions that provide strategic advantages for defense and intelligence operations, working with government agencies and defense contractors to integrate quantum technologies into next-generation defense systems and national security infrastructure.

Company Information

• Founded: 2019
• Country: USA
• Website: https://raytheon.com
• Categories: quantum defense

Related Companies

Explore other quantum computing companies in similar categories or regions.

Rigetti Computing

Rigetti Computing operates as a full-stack quantum computing company founded by Chad Rigetti in 2013, manufacturing superconducting quantum processors at their Fremont foundry while providing cloud access through Forest and PyQuil development tools, going public via SPAC in 2021 with partnerships including NASA and the Department of Energy to focus on hybrid quantum-classical applications in optimization, machine learning, and simulation.

Company Information

• Founded: 2013
• Country: USA
• Website: https://rigetti.com
• Categories: quantum processors, quantum cloud, quantum software

Key People

Chad Rigetti (Founder, CEO)

SandboxAQ

SandboxAQ is an enterprise quantum and AI company spun out of Alphabet in 2022, focusing on commercially viable applications that leverage quantum physics and quantum-inspired technologies. Led by CEO Jack Hidary, the company has secured $500 million in funding to develop quantum solutions for simulation, optimization, sensing, and cryptography applications. SandboxAQ’s approach combines quantum computing, quantum sensing, and AI to solve complex problems across industries including pharmaceuticals, materials science, telecommunications, and financial services. The company offers quantum-ready cryptography solutions to help organizations prepare for the post-quantum cryptography era, as well as quantum simulation platforms for drug discovery and materials research. SandboxAQ’s customer base includes large enterprises and government agencies seeking to leverage quantum technologies for competitive advantage. The company’s combination of quantum expertise, enterprise focus, and significant financial backing positions it as a major player in the commercialization of quantum technologies across multiple sectors.

SeeQC

SeeQC operates as a digital quantum computing chip foundry that combines superconducting quantum processors with classical electronics on the same chip, using single flux quantum (SFQ) technology to create energy-efficient quantum systems with integrated classical control, founded by quantum computing veterans to address the challenge of scaling quantum computers through advanced chip design and manufacturing.

Company Information

• Founded: 2019
• Country: USA
• Website: https://seeqc.com
• Categories: quantum processors

Key People

John Levy (CEO, Co-founder), Matthew Hutchings (CTO, Co-founder)

SiQure

SiQure focuses on silicon-based quantum computing technologies that leverage semiconductor manufacturing processes and silicon spin qubits to create quantum processors with potential advantages in manufacturability, integration with classical electronics, and scalability for building large-scale fault-tolerant quantum computers using familiar silicon fabrication infrastructure.

Company Information

• Founded: 2022
• Country: USA
• Website: https://siqure.com
• Categories: quantum processors

Key People

Jelmer Renema (Co-founder, CEO), Stefan Krastanov (Co-founder)

Related Companies

Explore other quantum computing companies in similar categories or regions.

Strangeworks

Strangeworks operates a comprehensive quantum computing platform that provides unified access to quantum hardware from multiple providers while offering educational resources, development tools, and community features to democratize quantum computing access for developers, researchers, and students worldwide.

Company Information

• Founded: 2017
• Country: USA
• Website: https://strangeworks.com
• Categories: quantum software, quantum education

Key People

whurley (William Hurley) (Founder, CEO)

Investment Information

• Status: private
• Total Raised: $24M
• Last Valuation: $150M

Recent Funding Rounds

• 2021-07-20: series-a - $20M - Series A funding round
• 2019-05-28: seed - $4M - Seed funding round

Related Companies

Explore other quantum computing companies in similar categories or regions.

Vector Atomic

Vector Atomic is a US quantum sensing company founded in 2018 that develops quantum inertial navigation systems using cold atom interferometry for GPS-free navigation applications, creating compact atomic gyroscopes, accelerometers, and magnetometers that provide precision navigation capabilities for defense, aerospace, and commercial applications where GPS signals are unavailable or compromised, leveraging laser-cooled atoms to achieve navigation-grade performance in portable quantum sensors that enable autonomous vehicle navigation, underwater navigation, and space exploration missions requiring ultra-precise inertial measurements without external reference signals.

Vescent

Vescent develops precision photonics and laser systems for quantum computing, quantum sensing, and quantum communication applications, providing laser stabilization, optical frequency combs, and precision measurement instruments that enable the optical control and manipulation of quantum systems across various quantum technology platforms.

Company Information

• Founded: 2002
• Country: USA
• Website: https://vescent.com
• Categories: quantum control

Related Companies

Explore other quantum computing companies in similar categories or regions.

← Back to All Companies

Zapata Computing

Zapata Computing was a Harvard spinout founded in 2017 that specialized in quantum software and later pivoted to generative AI applications before going public via SPAC in April 2024, developing quantum-enhanced algorithms and AI solutions for enterprise customers in manufacturing, finance, and logistics, but ceased operations in October 2024 after struggling to achieve commercial success in the competitive AI market.

Company Information

• Founded: 2017
• Country: USA
• Website: https://zapata.ai
• Categories: quantum software

Key People

Christopher Savoie (Co-founder, CEO), Alán Aspuru-Guzik (Co-founder)