Aegiq

Aegiq is a UK-based full-stack photonic quantum computing company spun out from the University of Sheffield in 2019, developing secure quantum communications using III-V semiconductor-based quantum photonics chips manufactured with elements like Gallium, Indium, and Arsenic rather than traditional Silicon. The company secured £1.4 million in funding from Innovate UK and won a £30 million quantum testbed competition funded by the National Quantum Computing Centre to deliver Artemis, their compact photonic quantum computer. Building on over 20 years of world-class research in semiconductors and quantum science, Aegiq develops quantum technology for fiber-optic and satellite-based applications, focusing on secure quantum communications and photonic quantum computing with their dedicated user interface for integration with NQCC testbed ecosystem.

Akhetonics

Akhetonics develops integrated photonic quantum technologies and components for quantum computing, quantum communication, and quantum sensing applications, focusing on silicon photonic chips and quantum light sources to enable scalable photonic quantum systems for next-generation quantum information processing and networking applications.

Company Information

• Founded: 2021
• Country: Germany
• Website: https://akhetonics.com
• Categories: quantum processors

Key People

Kevin Füchsel (Co-founder, CEO)

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Alice & Bob

Alice & Bob is a pioneering French quantum computing startup that has developed a revolutionary approach to quantum error correction using ‘cat qubits’ - a breakthrough technology that significantly reduces the overhead required for fault-tolerant quantum computing. Founded in 2020 by Théau Peronnin, Raphaël Lescanne, and other researchers from École Normale Supérieure and INRIA, the company has created superconducting cat qubits that exhibit natural protection against bit-flip errors, potentially reducing the number of physical qubits needed for logical qubits by orders of magnitude. Alice & Bob’s technology addresses one of quantum computing’s most critical challenges: achieving fault-tolerant quantum computing with manageable hardware overhead. The company has secured significant funding from European investors and established partnerships with research institutions and industry collaborators. Their cat qubit approach represents a fundamentally different path toward practical quantum computing, potentially enabling quantum advantage with far fewer physical qubits than conventional approaches. Alice & Bob’s innovative technology positions France and Europe as leaders in the race toward fault-tolerant quantum computing.

Alpine Quantum Technologies

Alpine Quantum Technologies develops trapped ion quantum computers and quantum simulators based on research from the University of Innsbruck, offering cloud-accessible quantum systems through their AQT quantum cloud platform for research institutions and companies working on quantum algorithms, optimization problems, and quantum simulation applications in materials science and chemistry.

Company Information

• Founded: 2018
• Country: Austria
• Website: https://aqt.eu
• Categories: quantum processors

Key People

Rainer Blatt (Co-founder), Thomas Monz (Co-founder)

Anyon Systems

Anyon Systems specializes in quantum hardware components and integration services, providing cryogenic systems, quantum device packaging, and custom quantum hardware solutions that enable researchers and companies to build and operate quantum computing systems with focus on practical implementation and system integration.

Company Information

• Founded: 2014
• Country: Canada
• Website: https://anyonsys.com
• Categories: quantum processors

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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)

C12

C12 Quantum Electronics is a Paris-based quantum computing startup founded in 2020 as a spinoff from École Normale Supérieure that develops quantum processors using ultra-pure carbon nanotubes as qubits, leveraging isotopically purified 12C carbon atoms with zero nuclear spin to minimize decoherence and achieve near-ideal qubit performance, with €18 million in funding and an underground quantum fabrication facility in Paris producing quantum processors for cloud availability by 2025 and chip sales starting in 2026.

Chipiron

Chipiron develops advanced quantum chip technology and semiconductor solutions for quantum computing applications, focusing on the design and fabrication of quantum devices with improved performance characteristics and integration capabilities for next-generation quantum processors and quantum systems.

Company Information

• Founded: 2021
• Country: France
• Website: https://chipiron.com
• Categories: quantum processors

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D-Wave

D-Wave Systems pioneered commercial quantum computing as the world’s first company to sell quantum computers, specializing in quantum annealing systems for optimization problems with their latest Advantage system featuring over 5,000 qubits with 15-way connectivity, serving 133 total customers including Lockheed Martin (since 2010), Google/NASA (since 2013), BASF, Deloitte, and MasterCard through their Leap cloud platform, demonstrating quantum advantage in applications across logistics, scheduling, machine learning, and financial modeling with over 150 customer-developed applications.

Diraq

Diraq develops silicon quantum processors using CMOS-compatible fabrication processes to create quantum computers that leverage existing semiconductor manufacturing infrastructure, focusing on silicon-based spin qubits that can be manufactured using standard chip fabrication techniques to enable cost-effective scaling of quantum systems for practical applications.

Company Information

• Founded: 2022
• Country: Australia
• Website: https://diraq.com
• Categories: quantum processors

Key People

Andrew Dzurak (Founder), Tuomo Tanttu (Co-founder)

Investment Information

• Status: private
• Total Raised: $135M
• Last Valuation: $500M

Recent Funding Rounds

• 2024-10-15: strategic - $100M - Government and strategic funding for silicon quantum processors
• 2024-02-20: series-a2 - $15M - Series A-2 funding round
• 2022-05-10: series-a - $20M - Series A funding round

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Duality Quantum Photonics

Duality Quantum Photonics is a UK-based quantum technology company founded in 2020 that develops integrated quantum photonics circuits and components for quantum computing, quantum communications, and quantum sensing applications, specializing in silicon photonic chips that enable scalable photonic quantum systems with high integration density, providing essential building blocks for photonic quantum technologies including quantum light sources, quantum interferometers, and photonic quantum processors for researchers and companies developing quantum 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)

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eleQtron

eleQtron is a German quantum computing company founded in 2020 that develops MAGIC (Magnetic Quantum Information Coupling) quantum computers using novel approaches to quantum processing, focusing on creating scalable quantum systems with enhanced coherence properties and reduced environmental sensitivity, working to advance quantum computing hardware through innovative qubit designs and quantum control techniques for applications in optimization, simulation, and quantum algorithm development across various industries and research institutions.

Company Information

• Founded: 2020
• Country: Germany
• Website: https://eleqtron.com
• Categories: quantum processors

Key People

Menno Veldhorst (Co-founder), Lieven Vandersypen (Co-founder)

Ephos

Ephos is a Milan-based startup founded in 2022 that designs and manufactures glass-based integrated photonic circuits for both classical and quantum devices. The company raised $8.5 million in seed funding led by Starlight Ventures and opened the world’s first glass-based quantum photonic circuits manufacturing facility in Milan. Founded by theoretical physicist Andrea Rocchetto with co-founders Francesco Ceccarelli, Giacomo Corrielli, and Roberto Osellame, Ephos uses glass fiber optics to build photonic chips that dramatically reduce coupling losses between fibers and chips compared to silicon-based competitors. The company received backing from the European Innovation Council and NATO’s Defence Innovation Accelerator, being selected as one of 10 companies from over 1,300 applicants, positioning them to address growing computational demands in quantum computing and AI infrastructure through innovative glass-based photonic chip technology.

Equal1

Equal1 is an Irish quantum computing startup founded in 2017 as a University College Dublin spinoff that has developed the world’s first rack-mounted silicon quantum computer called Bell-1, using revolutionary Quantum System-on-a-Chip (QSoC) processors that integrate quantum and classical transistors on a single CMOS-compatible silicon chip, enabling quantum computers to operate alongside traditional servers in data centers at a fraction of the cost of competing systems, with $11 million in funding and partnerships with Arm and GlobalFoundries to scale silicon spin qubit technology for commercial applications.

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

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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.

HYQ Bit

HYQ Bit develops trapped ion quantum computers using precision-controlled ion trapping technology to create high-fidelity quantum systems for research and commercial applications, contributing to China’s growing quantum computing ecosystem with focus on scalable ion trap architectures for quantum simulation and optimization applications.

Company Information

• Founded: 2020
• Country: China
• Website: https://hyqbit.com
• Categories: quantum processors

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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 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.

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.

IQM

IQM Quantum Computers specializes in building on-premise superconducting quantum computers for research institutions and enterprises, offering customizable quantum processors with application-specific architectures and providing full-stack quantum solutions including hardware, software, and services for organizations seeking dedicated quantum computing capabilities rather than cloud access.

Company Information

• Founded: 2018
• Country: Finland
• Website: https://iqm.com
• Categories: quantum processors

Key People

Mikko Möttönen (Co-founder), Juha Vartiainen (Co-founder)

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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)

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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.com
• Categories: quantum processors

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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)

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

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NEC

NEC is a Japanese technology company that develops quantum annealing and gate-based quantum computing systems, creating quantum computers for optimization problems and quantum simulations while offering quantum cloud services and quantum software development tools, implementing ParityQC’s architecture in their first quantum processor and focusing on practical quantum applications in logistics optimization, financial modeling, and traffic management, serving Japanese enterprises and research institutions with quantum computing solutions that address real-world optimization challenges across telecommunications, transportation, and business intelligence applications as part of Japan’s national quantum computing strategy.

Nord Quantique

Nord Quantique is a pioneering quantum error correction company founded in 2020 in Sherbrooke, Quebec, that develops fault-tolerant quantum computers using bosonic codes and multimode encoding with their breakthrough Tesseract code, exploiting the natural redundancy of photons within quantum modes to achieve built-in error resilience without requiring more physical qubits, demonstrating industry-first quantum error correction at the qubit level with plans to deliver utility-scale machines exceeding 100 logical qubits by 2029 while consuming dramatically less energy than classical HPC systems.

OptQC

OptQC is a Japanese photonic quantum computing company founded in 2021, developing optical quantum computers using photonic qubits for quantum computing applications. The company focuses on building scalable photonic quantum computing systems that operate at room temperature using integrated photonics technology, offering advantages in networking capabilities and system integration compared to other quantum computing approaches. OptQC develops quantum software and algorithms optimized for photonic quantum computing platforms, targeting applications in optimization, machine learning, and quantum simulation for Japanese enterprises and research institutions. The company contributes to Japan’s national quantum technology initiative by advancing photonic quantum computing capabilities and collaborating with academic research institutions to commercialize quantum technologies for practical applications in finance, logistics, and scientific computing.

ORCA Computing

ORCA Computing is a University of Oxford spinout founded in 2019 that develops photonic quantum computers using single photons and linear optical quantum computing, creating quantum systems that can operate at room temperature without requiring complex cryogenic cooling, focusing on near-term quantum applications in optimization and machine learning through their cloud-accessible photonic quantum processors, working to demonstrate quantum advantage in practical applications while building partnerships with enterprises and research institutions seeking photonic quantum computing solutions.

Origin Quantum

Origin Quantum stands as China’s first quantum computer company, developing superconducting quantum processors and quantum cloud services while offering comprehensive quantum solutions including quantum software development tools, quantum education programs, and consulting services to advance China’s quantum computing capabilities across research institutions and commercial applications.

Company Information

• Founded: 2017
• Country: China
• Website: https://originqc.com
• Categories: quantum processors

Key People

Guo Guoping (Founder), Kong Weicheng (CEO)

Investment Information

• Status: private
• Total Raised: $1500M
• Last Valuation: $3.2B

Recent Funding Rounds

• 2024-09-12: series-c - $800M - Series C funding led by China Investment Corporation
• 2022-12-08: series-b - $400M - Series B funding round
• 2020-03-15: series-a - $300M - Series A funding round

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Oxford Ionics

Oxford Ionics was spun out of Oxford University in 2019 by founders Chris Ballance and Tom Harty, developing breakthrough electronic qubit control technology for trapped ion quantum computers that uses standard semiconductor chips to control ions rather than expensive laser systems, enabling scalable quantum processor manufacturing and was acquired by IonQ for $1.075 billion in June 2025, representing the largest acquisition in quantum computing history and combining IonQ’s quantum computing stack with Oxford Ionics’ chip-based ion trap technology manufactured on standard semiconductor processes.

Oxford Quantum Circuits

Oxford Quantum Circuits (OQC) is a UK-based quantum computing company that develops superconducting quantum computers featuring innovative 3D architecture and proprietary Coaxmon qubit technology. Founded in 2017 by quantum computing pioneers from Oxford University, OQC has built Europe’s most advanced quantum computing systems, including their flagship Lucy processor with proprietary qubit designs that offer improved coherence and reduced crosstalk. The company’s unique 3D quantum computing architecture enables better connectivity and scalability compared to traditional planar approaches. OQC operates the UK’s first commercial quantum computing service and has established partnerships with organizations including the European Space Agency and various government initiatives. Their quantum computers are accessible through major cloud platforms, serving customers in optimization, machine learning, and scientific computing. OQC’s combination of cutting-edge hardware innovation, commercial cloud services, and strong European positioning makes them a key player in the global quantum computing ecosystem, particularly for organizations seeking alternatives to US-based quantum cloud providers.

Pasqal

Pasqal builds programmable neutral atom quantum computers with over 100 qubits using arrays of cold atoms trapped by optical tweezers, enabling both digital quantum computing and analog quantum simulation for applications in optimization, machine learning, and materials science, founded by researchers from Institut d’Optique to commercialize breakthrough research in neutral atom quantum technologies.

Company Information

• Founded: 2019
• Country: France
• Website: https://pasqal.com
• Categories: quantum processors

Key People

Georges-Olivier Reymond (CEO), Thierry Lahaye (Co-founder)

Photonic Inc

Photonic Inc develops fault-tolerant quantum computers using silicon photonic technology and spin-photon interfaces to create distributed quantum systems that can operate at telecommunications wavelengths, enabling networking capabilities and room-temperature operation for quantum computing applications in optimization, machine learning, and distributed quantum computing networks.

Company Information

• Founded: 2016
• Country: Canada
• Website: https://photonic.com
• Categories: quantum processors

Key People

Stephanie Simmons (Founder, CEO)

Investment Information

• Status: private
• Total Raised: $109M
• Last Valuation: $400M

Recent Funding Rounds

• 2023-03-14: series-a - $100M - Series A funding round led by Microsoft
• 2021-04-08: seed - $9M - Seed funding round

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planqc

planqc is a German quantum computing startup founded in 2022 as part of the Munich Quantum Valley ecosystem that develops neutral atom quantum computers using arrays of cold atoms trapped by optical tweezers, creating scalable quantum systems with high connectivity and programmable architectures for quantum computing applications in optimization, simulation, and machine learning, leveraging Munich’s strong quantum research ecosystem and partnerships with academic institutions to advance neutral atom quantum technology toward commercial applications.

Plessey Semiconductors

Plessey Semiconductors is a UK-based leading developer of advanced optoelectronic technology solutions, operating as the UK’s only LED manufacturer and the only LED maker globally commercializing LEDs on silicon substrates using their award-winning proprietary GaN-on-Silicon platform. The company has connections to quantum technology through partnerships integrating Nanoco Technologies’ cadmium-free quantum dot semiconductor nanoparticle technology into their monolithic microLED displays for augmented reality and virtual reality applications. With leading-edge 150mm and 200mm wafer processing facilities in Plymouth and comprehensive photonic characterization laboratories, Plessey provides full-field emissive microLED displays combining high-density RGB pixel arrays with CMOS backplanes, with potential applications in optical processing units for AI operations that are faster and more energy-efficient than traditional silicon devices.

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.

Q.ANT

Q.ANT develops photonic quantum computing technologies and quantum photonics components for quantum information processing, quantum sensing, and quantum communication applications, leveraging advanced photonic integration and quantum optics to create practical quantum systems for commercial and research applications.

Company Information

• Founded: 2018
• Country: Germany
• Website: https://qant.de
• Categories: quantum processors

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Qboson

Qboson is a Beijing-based quantum computing startup that secured angel financing to build quantum computers and establish quantum computing laboratories in China. The company focuses on developing quantum computing hardware and research capabilities, contributing to China’s national quantum technology initiatives and advancing quantum computing research and development. Qboson works on quantum processor development, quantum system integration, and quantum computing research applications for academic and commercial applications. The company collaborates with Chinese universities and research institutions to advance quantum computing capabilities and develop practical quantum computing systems for various applications including optimization, simulation, and quantum algorithm research.

Qilimanjaro

Qilimanjaro Quantum Tech is a Barcelona Supercomputer Center spinout founded in 2019 that develops quantum computing solutions combining quantum annealing and gate-model quantum computing approaches, creating hybrid quantum-classical systems that can solve optimization problems and quantum simulations for industries including finance, logistics, and materials science, leveraging Spain’s supercomputing expertise and European quantum initiatives to advance practical quantum computing applications with focus on near-term quantum advantage in optimization and simulation problems.

Quandela

Quandela is a French photonic quantum computing company founded in 2017 that specializes in developing modular photonic quantum computers using single-photon sources and quantum light manipulation, creating scalable quantum systems based on photonic qubits that operate at room temperature, offering cloud-accessible quantum processors and quantum light sources for research institutions and enterprises working on quantum computing applications in optimization, machine learning, and quantum simulation, with focus on making photonic quantum technology commercially viable for various industries.

Quantic

Quantic is a French quantum computing company developing quantum processors and quantum software solutions for European enterprises and research institutions. The company focuses on building quantum computing systems using advanced quantum technologies and provides quantum software development tools, quantum algorithms, and consulting services for organizations seeking to explore quantum computing applications. Quantic contributes to France’s quantum technology ecosystem by advancing quantum hardware and software capabilities, collaborating with French research institutions and enterprises to develop practical quantum computing solutions for optimization, simulation, and computational challenges in various industrial sectors.

Quantinuum

Quantinuum formed in 2021 through the merger of Honeywell Quantum Solutions and Cambridge Quantum Computing to create the world’s largest integrated quantum computing company, combining industry-leading trapped-ion H-Series quantum computers with the highest quantum volume metrics alongside quantum software including lambeq, TKET, and InQuanto, employing over 480 people to deliver quantum advantage in cybersecurity, drug discovery, materials science, and financial modeling.

Company Information

• Founded: 2021
• Country: UK
• Website: https://quantinuum.com
• Categories: quantum processors, quantum cloud, quantum software

Key People

Ilyas Khan (Co-founder, Vice-Chairman, CPO), Tony Uttley (President, COO), Raj Hazra (CEO)

Quantum Brilliance

Quantum Brilliance develops revolutionary room-temperature quantum accelerators using synthetic diamond with nitrogen-vacancy centers as qubits, eliminating the need for cryogenic cooling systems while creating compact quantum computers suitable for edge computing, mobile platforms, and space applications where traditional quantum systems cannot operate.

Company Information

• Founded: 2019
• Country: Australia
• Website: https://quantumbrilliance.com
• Categories: quantum processors

Key People

Andrew Horsley (Co-founder, CEO), Marcus Doherty (Co-founder)

Investment Information

• Status: private
• Total Raised: $78M
• Last Valuation: $350M

Recent Funding Rounds

• 2024-05-15: series-b - $45M - Series B funding for diamond NV quantum processors
• 2022-01-18: series-a - $33M - Series A funding round

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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

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Quantum Dice

Quantum Dice is a UK quantum hardware company founded in 2019 that develops quantum random number generators using quantum tunneling effects in semiconductor devices to produce true quantum randomness, creating compact quantum entropy sources and random number generation hardware for cybersecurity, cryptography, and secure communications applications, providing quantum random number generators, entropy devices, and quantum-safe randomness solutions for telecommunications providers, cybersecurity companies, and organizations requiring certified high-quality entropy sources for encryption keys, digital signatures, and secure protocols that leverage quantum physical processes for unpredictable randomness generation.

Quantum Motion

Quantum Motion develops silicon-based quantum computers using CMOS technology and hot qubits that operate at higher temperatures than traditional quantum systems, founded by researchers from Oxford and UCL to create quantum processors that integrate with classical electronics using standard semiconductor manufacturing processes for cost-effective and scalable quantum computing.

Company Information

• Founded: 2017
• Country: UK
• Website: https://quantummotion.tech
• Categories: quantum processors

Key People

John Morton (Co-founder), Simon Benjamin (Co-founder)

Investment Information

• Status: private
• Total Raised: $67M
• Last Valuation: $250M

Recent Funding Rounds

• 2024-01-09: series-a - $50M - Series A funding for silicon quantum processors
• 2021-05-11: seed - $17M - Seed funding round

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Quantum Source

Quantum Source is an Israeli photonic quantum computing company founded in 2021 by semiconductor veterans including CEO Oded Melamed and Professor Barak Dayan, developing breakthrough technology that harnesses single rubidium atoms trapped on proprietary photonic chips to generate single photons and implement atom-photon entangling quantum gates with five orders of magnitude better efficiency than state-of-the-art implementations, enabling the construction of complex 3D cluster states for error-correction with over $77 million in funding to build large-scale quantum computers by the decade’s end.

QuantWare

QuantWare is a TU Delft/QuTech spinout founded in 2020 by Dr. Alessandro Bruno and MSc Matthijs Rijlaarsdam that became the world’s first company to commercially manufacture superconducting quantum processors for third parties, offering off-the-shelf QPUs like the 5-qubit Soprano and 25-qubit Contralto that enable customers to build full-stack quantum computers at one-tenth the cost of competing solutions, with foundry services and €13.5 million in funding to accelerate quantum processor development and lower barriers to entry in quantum computing.

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.

QuiX Quantum

QuiX Quantum develops integrated photonic quantum processors using silicon photonics technology to create scalable quantum computing systems that operate at room temperature, focusing on photonic quantum circuits and quantum interferometry for applications in quantum simulation, optimization, and quantum machine learning.

Company Information

• Founded: 2019
• Country: Netherlands
• Website: https://quixquantum.com
• Categories: quantum processors

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Quobly

Quobly (formerly Siquance) develops quantum hardware solutions with focus on superconducting quantum devices and quantum system integration, working to advance European quantum computing capabilities through innovative quantum technologies and collaborative research with academic and industrial partners.

Company Information

• Founded: 2022
• Country: France
• Website: https://quobly.com
• Categories: quantum processors

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Quside

Quside is a Spanish quantum technology company founded in 2017 that develops quantum random number generators (QRNGs) and quantum entropy sources for cybersecurity, cryptography, and secure communications applications, providing true random number generation based on quantum physical processes that ensure unpredictable and unbiased randomness essential for encryption keys, secure protocols, and high-security applications in telecommunications, finance, and government sectors requiring certified quantum-grade randomness for cryptographic security.

Company Information

• Founded: 2017
• Country: Spain
• Website: https://quside.com
• Categories: quantum processors

Key People

Carlos Abellan (Co-founder, CEO), Waldimar Amaya (Co-founder, CTO)

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)

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)

SemiQon

SemiQon develops silicon-based quantum processors using advanced semiconductor fabrication techniques to create quantum computing systems that leverage the existing semiconductor industry infrastructure, focusing on silicon spin qubits and quantum dots for scalable quantum computing applications with potential advantages in manufacturability and integration with classical electronics.

Company Information

• Founded: 2023
• Country: Finland
• Website: https://semiqon.com
• Categories: quantum processors

Key People

Himadri Majumdar (Co-founder, CEO), Joonas Govenius (Co-founder, CTO)

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Silicon Quantum Computing

Silicon Quantum Computing (SQC) is an Australian quantum technology company founded in 2017 that develops silicon-based quantum processors using silicon spin qubits fabricated with semiconductor manufacturing techniques, leveraging Australia’s strong research in silicon quantum devices to create scalable quantum computers that can utilize existing chip fabrication infrastructure, focusing on building fault-tolerant quantum systems for practical applications while working closely with academic institutions and government initiatives to advance Australia’s quantum computing capabilities.

Single Quantum

Single Quantum specializes in superconducting nanowire single photon detectors (SNSPDs) that provide the highest performance photon detection capabilities essential for quantum communication, quantum computing, and quantum sensing applications, offering detection systems with near-perfect efficiency, low noise, and high timing resolution for researchers and companies building quantum technologies.

Company Information

• Founded: 2012
• Country: Netherlands
• Website: https://singlequantum.com
• Categories: quantum processors

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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)

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Sparrow Quantum

Sparrow Quantum develops high-performance single-photon sources and quantum light generation systems essential for photonic quantum computing, quantum communication, and quantum sensing applications, providing reliable quantum light sources with high purity and efficiency for researchers and companies building photonic quantum technologies.

Company Information

• Founded: 2016
• Country: Denmark
• Website: https://sparrowquantum.com
• Categories: quantum processors

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SpinQ

SpinQ develops desktop quantum computers using nuclear magnetic resonance (NMR) technology to create compact, room-temperature quantum systems for educational and research purposes, making quantum computing accessible to universities and research institutions with portable systems that demonstrate quantum algorithms and quantum physics principles without requiring complex cryogenic infrastructure.

Company Information

• Founded: 2018
• Country: China
• Website: https://spinq.com
• Categories: quantum processors

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Taiwan Semiconductor Quantum

Taiwan Semiconductor Manufacturing Company (TSMC) is advancing quantum computing through specialized semiconductor manufacturing processes for quantum processors, quantum control electronics, and cryogenic systems. The company develops advanced fabrication techniques for superconducting qubits, silicon spin qubits, and quantum control chips, leveraging their leading-edge semiconductor manufacturing capabilities to produce quantum computing hardware for quantum technology companies worldwide. TSMC collaborates with quantum computing companies including IBM, Google, and other quantum hardware developers to optimize manufacturing processes for quantum devices, providing the semiconductor manufacturing infrastructure essential for scaling quantum computing systems. The company’s quantum initiatives focus on developing quantum-specific fabrication processes, yield optimization for quantum devices, and advanced packaging solutions for quantum processors and control electronics.

Tokyo Quantum Computing

Tokyo Quantum Computing develops integrated quantum hardware and software solutions combining superconducting quantum processors with quantum development tools and algorithms, focusing on advancing Japan’s quantum computing capabilities through full-stack quantum systems for research institutions and commercial applications in optimization and machine learning.

Company Information

• Founded: 2020
• Country: Japan
• Website: https://tokyoquantum.com
• Categories: quantum processors, quantum software

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TuringQ

TuringQ is China’s first optical quantum computing company established in 2021 by Professor Jin Xianmin from Shanghai Jiaotong University, specializing in photonic quantum processors using lithium niobate on insulator (LNOI) photonic chips and femtosecond laser direct writing technology, with products including the TuringQ Gen 1 fully integrated optical quantum computer and FeynmanPAQS quantum simulation software, having completed 500 million yuan ($79 million) in funding and established China’s first photonic chip pilot line in Wuxi for applications in financial technology, biomedicine, and artificial intelligence.

Universal Quantum

Universal Quantum develops modular trapped ion quantum computers with a unique architecture that allows individual ion trap modules to be connected via photonic links, enabling scalable quantum systems that can grow by adding modules while maintaining high-fidelity operations, founded by quantum computing researchers from the University of Sussex to target large-scale quantum computing applications.

Company Information

• Founded: 2018
• Country: UK
• Website: https://universalquantum.com
• Categories: quantum processors

Key People

Sebastian Weidt (Co-founder, CEO), Winfried Hensinger (Co-founder)

Xanadu

Xanadu is a leading photonic quantum computing company that has pioneered the development of room-temperature, networkable quantum computers using squeezed light and integrated photonics. Founded in 2016, the company has developed the X-Series of photonic quantum computers, including the 216-mode Borealis system that demonstrated quantum computational advantage in Gaussian boson sampling by completing tasks in 36 microseconds that would take classical computers over 9,000 years. Xanadu’s unique approach uses continuous-variable quantum computing with photons, offering advantages in networking capabilities and room-temperature operation compared to other quantum technologies. The company is also the creator of PennyLane, an open-source quantum machine learning library that has become a standard tool for quantum-classical hybrid algorithms, used by researchers and developers worldwide. Xanadu operates Xanadu Quantum Cloud, providing programmatic access to their quantum hardware and simulators including Borealis through Amazon Braket. With significant funding and partnerships spanning academia, government, and industry, Xanadu is positioned at the forefront of photonic quantum computing and quantum machine learning applications.

Zero Point Motion

Zero Point Motion is a UK quantum technology company founded in 2020 that develops quantum inertial navigation systems and quantum accelerometers for precision navigation applications where GPS is unavailable, creating compact quantum sensors that leverage cold atom interferometry and atomic physics to provide ultra-precise measurements of acceleration and rotation for autonomous vehicles, submarines, aircraft, and spacecraft requiring navigation-grade performance in GPS-denied environments, offering quantum sensing solutions that maintain long-term navigation accuracy without external reference signals through atomic-scale precision measurements.

ZuriQ

ZuriQ is a Swiss quantum computing company founded in 2020, developing 3D trapped-ion quantum computing architecture that offers improved scalability and connectivity compared to traditional planar ion trap designs. The company emerged from research at ETH Zurich focusing on advanced ion trap technologies for quantum computing applications, developing novel approaches to trapped-ion quantum processors with enhanced qubit connectivity and reduced cross-talk between qubits. ZuriQ’s 3D quantum computing architecture enables more efficient quantum error correction and fault-tolerant quantum computing by providing better geometric arrangements of trapped ions and improved control systems. The company targets applications in quantum simulation, optimization, and quantum algorithms that benefit from the enhanced connectivity and scalability of their 3D trapped-ion quantum computing platform, contributing to Switzerland’s quantum technology ecosystem and European quantum computing initiatives.