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: hardware

Key People

Unknown

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: software

Key People

Unknown

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 developed 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 pioneered fluxonium qubit technology. Atlantic Quantum’s approach leveraged 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. In October 2025, Google Quantum AI acquired Atlantic Quantum to advance scalable quantum hardware development, integrating the company’s advanced fluxonium qubit technology into Google’s quantum computing roadmap. The acquisition represented a strategic move by Google to strengthen its quantum hardware capabilities by bringing cutting-edge academic research from MIT into commercial applications. Atlantic Quantum’s focus on advanced qubit technology positioned them to contribute significantly to Google’s pursuit of 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. In November 2024 at Microsoft Ignite, Atom Computing and Microsoft demonstrated a historic achievement by creating and entangling 24 logical qubits using neutral atoms, with the ability to detect and correct errors and perform computation on 28 logical qubits. The partnership delivers commercial error-corrected, fault-tolerant quantum computers in 2025, combining Atom’s approximately 1,000+ physical qubit array with Microsoft’s qubit-virtualization system to support up to 50 error-corrected logical qubits. Atom Computing achieved 99.6% two-qubit gate fidelity, the highest recorded in the neutral atom modality, with on-premise systems now available for order with 2025 delivery.

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: hardware

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: 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: hardware

Key People

Unknown

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: hardware

Key People

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

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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: hardware

Key People

Unknown

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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: infrastructure

Key People

Unknown

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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: infrastructure

Key People

Unknown

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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. In December 2024, Google unveiled their Willow quantum chip featuring 105 qubits that achieved a historic breakthrough in quantum error correction by demonstrating exponential error reduction while scaling up—the first time errors have been reduced below the critical threshold as more qubits are added, solving a challenge that has persisted for nearly 30 years since Peter Shor introduced quantum error correction in 1995. Willow achieved a 5x improvement in qubit coherence times to 100 microseconds and demonstrated that larger qubit arrays (3x3 to 5x5 to 7x7) cut error rates in half at each step, with their distance-7 logical qubit showing a 0.143% error per cycle and exceeding the lifetime of its best physical qubit by a factor of 2.4. The chip performed a standard benchmark computation in under five minutes that would take today’s fastest supercomputers 10 septillion years, marking significant progress toward practical fault-tolerant quantum computing.

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: hardware

Key People

Unknown

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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 and the 1,121-qubit Condor processor released in December 2023 as the first to surpass the 1,000-qubit threshold, 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. In December 2023, IBM introduced the Heron processor featuring 133 fixed-frequency qubits with tunable couplers that deliver 3-5x performance improvement over the 127-qubit Eagle processor while virtually eliminating crosstalk, establishing Heron as the foundation for their hardware roadmap going forward. The company has since developed Heron R2 with 156 qubits and plans to introduce the Kookaburra processor in 2025—a 1,386-qubit multi-chip processor with quantum communication links that will be demonstrated as a 4,158-qubit system connecting three Kookaburra chips. IBM’s extended roadmap targets executing 100 million gates over 200 qubits with their Starling processor employing error correction by 2029, marking an inflection point toward practical fault-tolerant quantum computing.

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. In June 2025, Infleqtion raised $100 million in Series C funding backed by new, existing, and strategic investors including Glynn Capital, Counterpoint Global (Morgan Stanley), S32, and SAIC to scale atom-based quantum platforms for defense and commercial deployment. The company will build the first utility-scale neutral atom quantum computer in Illinois backed by a $50 million public-private partnership with the Illinois Quantum and Microelectronics Park, committing $14 million investment and hiring 36 new employees. With commercial records for qubit count (1600 atoms) and 99.73% user-facing two-qubit fidelity, Infleqtion has achieved 12 logical qubits with error detection and expects to deliver a full-stack fault-tolerant system with more than 1,000 logical qubits by 2030, serving over three dozen active government and commercial programs across North America, the UK, and Australia.

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://www.intel.com/content/www/us/en/research/quantum-computing.html
• Categories: hardware

Key People

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

Investment Information

• Status: public
• Ticker: INTC
• Total Raised: Internal R&D
• Market Cap: $115B (September 2025)

Recent Funding Rounds

• 2024-12-10: strategic - $1.2B - Quantum computing R&D budget allocation for Horse Ridge III and Tunnel Falls development
• 2024-08-15: strategic - $500M - Partnership investment with Laboratory for Physical Sciences quantum research
• 2023-06-22: strategic - $300M - Silicon spin qubit fabrication facility expansion

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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. In September 2025, IonQ secured UK Investment Security Unit regulatory approval for its $1.065 billion acquisition of Oxford Ionics, representing the largest acquisition in quantum computing history and combining IonQ’s quantum computing stack with Oxford Ionics’ breakthrough chip-based ion trap technology manufactured on standard semiconductor processes. The acquisition required Oxford Ionics’ hardware and operations to remain in the UK under National Security and Investment Act conditions, while providing IonQ access to revolutionary electronic qubit control technology that uses semiconductor chips rather than expensive laser systems. IonQ received $636 million in gross proceeds from its SPAC public offering and continues serving Fortune 500 companies and research institutions with industry-leading quantum computers.

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: infrastructure

Key People

Unknown

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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 was a Boston-based startup founded in 2022 that developed 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. In June 2025, IonQ acquired Lightsynq Technologies to advance quantum computing and networking scalability, bringing over 20 patents to IonQ’s portfolio. The acquisition positioned IonQ to strengthen its photonic interconnect capabilities and quantum memory technologies, integrating Lightsynq’s expertise in photonic quantum systems with IonQ’s trapped-ion quantum computing platform to enable more scalable quantum architectures.

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: hardware

Key People

Unknown

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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.tech
• Categories: hardware

Key People

Unknown

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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: hardware

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: hardware

Key People

Unknown

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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

Key People

Unknown

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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://www.nvidia.com/en-us/solutions/quantum-computing
• Categories: services

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.

PINC Technologies

PINC Technologies is a Pasadena-based Caltech spinout founded in 2023 that develops scalable nonlinear photonic integrated circuits for quantum computing applications. The company emerged from stealth in October 2025 with $6.8 million in total funding to unlock scalable nonlinearity for photonic chips through their proprietary NanoPPLN platform. PINC’s technology brings high-performance nonlinear optics to integrated photonic circuits, enabling applications in quantum computing, optical sensing, artificial intelligence, data networks, biomedical devices, atomic clocks, lidar, and metrology. The company’s NanoPPLN platform addresses the missing scalable nonlinearity in photonic integrated circuits, making nonlinear optics fully integrated and scalable for next-generation quantum and photonic systems, contributing to advances in quantum photonics and enabling new capabilities across multiple technological domains requiring integrated nonlinear optical components.

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.

Post-Quantum Coalition

The Post-Quantum Coalition is an international industry consortium established in 2021 that brings together technology companies, cybersecurity organizations, and research institutions to accelerate the development and adoption of post-quantum cryptography standards and quantum-safe security solutions, coordinating efforts to prepare for the quantum computing threat to current encryption methods, promoting awareness of quantum security risks, supporting NIST post-quantum cryptography standardization efforts, and facilitating collaboration between industry and government to ensure smooth transition to quantum-resistant cryptographic systems before cryptographically relevant quantum computers become available.

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, bypassing near-term NISQ systems to focus exclusively on utility-scale quantum computing for drug discovery, materials science, and cryptography applications. In April 2024, the company received A$940 million from the Australian federal and Queensland governments for its Brisbane headquarters and quantum data center near Brisbane Airport. In September 2025, PsiQuantum raised $1 billion in Series E funding led by BlackRock, Temasek, and Baillie Gifford with participation from Nvidia’s NVentures, valuing the company at $7 billion. The company is planning two data center-sized quantum computing facilities with construction beginning in 2025 in Brisbane, Australia and Chicago, Illinois, targeting partial operational launch in 2027 and scaling to approximately one million physical qubits by 2029.

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: software

Key People

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

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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

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Qiskit

Qiskit is IBM’s open-source quantum computing framework launched in 2017 that has become the world’s most widely used quantum development platform, providing comprehensive tools for quantum circuit design, quantum algorithm implementation, quantum machine learning, and quantum application development, supporting quantum hardware from multiple providers and enabling researchers, developers, and students worldwide to learn quantum computing, build quantum applications, and contribute to the global quantum computing ecosystem through its extensive documentation, tutorials, and community support.

Qolab

Qolab is a Madison, Wisconsin-based superconducting quantum computing company founded in 2022 by Dr. John Martinis, former Google Quantum AI lead scientist, and Dr. Robert McDermott from the University of Wisconsin-Madison. The company secured over $16 million in Series A financing led by Octave Ventures with co-investment from Development Bank of Japan Inc., Wisconsin Alumni Research Foundation, and Phoenix Venture Partners to develop reliable, high-performance quantum processors. Led by CEO Alan Ho, Qolab combines a physics-driven approach with a focus on qubit quality and practical hardware solutions, leveraging semiconductor fabrication tools and innovative scaling techniques for quantum computing systems. The company’s mission is to develop utility-scale quantum computing technology that meets the growing demand for reliable quantum processors, building on the pioneering work of its founders in superconducting quantum systems and quantum error correction.

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.

QSimulate

QSimulate is a Cambridge-based quantum molecular simulation company founded in 2018 by Garnet Chan and Toru Shiozaki that develops cloud-based quantum chemical simulation tools for pharmaceutical, materials, and chemical companies. In August 2025, QSimulate partnered with Mitsui & Co. and Quantinuum to launch QIDO (Quantum-Integrated Discovery Orchestrator), a quantum-enabled chemistry platform that integrates QSimulate’s QSP Reaction software with Quantinuum’s InQuanto platform to enable high-precision chemical simulations. The company’s QSP platform enables customers to perform quantum chemical simulations modeling thousands of atoms with state-of-the-art quantum chemistry methods, enabling first-of-a-kind quantum simulations of ligand-protein interactions throughout the computational drug discovery pipeline. QSimulate has raised $11.34 million in total funding including a $2.5 million Series A round in 2023, with strategic partnerships including Japan Tobacco for small molecule drug discovery acceleration.

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: hardware

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

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Quantum Computing Inc

Quantum Computing Inc (QCI) is a quantum software and applications company that secured $750 million in funding in October 2025, representing one of the largest quantum software investments in history. Founded in 2013, QCI develops quantum software platforms and applications enabling organizations to solve complex optimization problems using quantum and quantum-inspired algorithms. The company provides accessible quantum computing solutions for businesses without requiring deep quantum expertise through their ready-to-use quantum applications, Qatalyst quantum software platform, and consulting services. QCI’s technology portfolio includes quantum optimization solutions for logistics, supply chain management, financial modeling, and drug discovery applications. The company’s $750M funding round positions QCI as a major player in commercializing quantum software applications, with the capital supporting expansion of their enterprise quantum software offerings and acceleration of quantum-inspired algorithm development for near-term practical applications across multiple industries.

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: infrastructure

Key People

Unknown

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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: research

Key People

Unknown

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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: infrastructure

Key People

Unknown

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: 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: hardware

Key People

Unknown

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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. In August 2025, QuEra formed a strategic alliance with Deloitte to accelerate enterprise adoption of neutral-atom quantum computing, combining QuEra’s hardware platforms with Deloitte’s professional services expertise to target life sciences, financial services, logistics, and energy sectors. In October 2025, QuEra announced a partnership with BCG X, Boston Consulting Group’s AI Science Institute, to accelerate quantum value delivery for enterprises and government innovators. 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, with their Aquila quantum computer accessible through Amazon Braket representing one of the most powerful quantum simulators available commercially. Joint research with Deloitte has demonstrated quantum reservoir computing on QuEra’s hardware outperforming classical models on drug-discovery datasets. Founded by leading quantum physicists including Mikhail Lukin and Markus Greiner, QuEra operates the world’s largest publicly accessible quantum computer and targets 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

Key People

Unknown

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. In 2024-2025, Rigetti announced a landmark partnership with Quanta Computer, the world’s largest laptop manufacturer, involving over $100 million in commitments from each party over five years, with Quanta making a direct $35 million strategic investment in Rigetti to jointly develop quantum computing systems and expand market access in Asia. The company is collaborating with QphoX and the UK’s National Quantum Computing Centre (NQCC) on a 33-month program to develop novel optical readout technology for superconducting qubits, aiming to improve scalability and reduce hardware complexity. Rigetti also established a partnership with India’s Centre for Development of Advanced Computing (C-DAC) to advance quantum computing research and applications in India, and secured a contract with the Air Force Research Laboratory (AFRL) for quantum networking research. In September 2025, Rigetti announced $5.7 million in quantum computing system orders, demonstrating growing commercial demand for their technology.

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: hardware

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: hardware

Key People

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

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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

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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: hardware

Key People

Unknown

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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: software

Key People

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