Introducing Quantinuum: The World's Largest Integrated Quantum Computing Company

Quantinuum is a result of the combination of two global leaders in quantum computing: Honeywell Quantum Solutions and Cambridge Quantum

November 30, 2021

Cambridge, UK and Broomfield, Colorado, November 30th, 2021 — The two leading companies in the quantum computing industry have combined to create Quantinuum, thereby accelerating the development of quantum computing and innovation of quantum technologies in a platform agnostic manner to deliver real-world quantum-enabled solutions for some of the most intractable problems that classical computers have not been able to solve. 

Cambridge Quantum, the pioneer in quantum software, operating systems, and cybersecurity, and Honeywell Quantum Solutions, which has built the highest-performing quantum hardware, based on trapped-ion technologies, today announced they have satisfied all of the conditions required to close the business combination and formed the new company, now called Quantinuum. 

“Quantinuum is now the largest and most advanced integrated quantum computing company in the world,” said Ilyas Khan, CEO of the new company and founder of Cambridge Quantum. “By uniting the best-in-class quantum software available with the highest performing hardware available, we are uniquely positioned to bring real, quantum computing products and solutions to large, high-growth markets in the near term, the medium term and the longer term as quantum computers scale in capacity and quality. We are science led, and enterprise driven, and our scale and global presence in this most critical of technologies will provide leadership in each of the key areas that constitute the ‘must haves’ for quantum computing to deliver real world solutions to all our customers and partners.”

Quantinuum will globally launch a quantum cyber security product in December 2021, and later in 2022, an enterprise software package that applies quantum computing to solve complex scientific problems in pharmaceuticals, materials science, specialty chemicals and agrochemicals.  It will also announce major upgrades to the System Model H1 hardware technologies, Powered by Honeywell, which has the highest measured quantum volume, as well as industry breakthroughs that reduce errors thereby continuing to progress credibly towards the development of a fault-tolerant quantum system. In this respect, the H-Series quantum computers continue the trend of meeting and exceeding the deliverables that the company has previously committed to as part of its hardware roadmap.

“I am thrilled to help lead our new company, which will positively change the world through the application of quantum computing. Our scientists continue to work hard to develop the best quantum software and hardware technologies available and I am excited to be able to offer these to customers on an on-going basis,” said Tony Uttley, President and Chief Operating Officer of Quantinuum. “The next few weeks and months are going to be extremely active for Quantinuum as we increase the pace in deriving unique value from today’s quantum computers especially in cyber security. However, in addition to cyber security, our products will include solutions for drug discovery and drug delivery, materials science, finance, natural language processing, as well as optimization, pattern recognition, and supply chain and logistics management.”

Quantinuum was formed six months after Honeywell announced that Honeywell Quantum Solutions, its quantum computing division, would separate from the company and combine with Cambridge Quantum. Honeywell is the largest shareholder of Quantinuum with an approximately 54 percent ownership stake in the new company. Additionally, on top of this stake, Honeywell has also invested nearly $300 million in the new venture, ensuring that Quantinuum is well capitalized at inception. The other major shareholder is Ilyas Khan the founder of Cambridge Quantum, and the CEO of Quantinuum with an approximately 23% holding. Other shareholders include IBM and JSR Corp from Japan.

Honeywell is also a supplier to Quantinuum, supporting the manufacturing process for the company’s proprietary ion-traps. Additionally, Honeywell is a customer of Quantinuum on various projects across its business units.

Quantinuum has a staff of almost 400 people at inception, with offices in the United Kingdom, United States, Japan, and Germany.  Of those employees, approximately 300 are scientists working on technical teams to advance the hardware and develop software solutions.

Quantinuum will maintain a European headquarters in Cambridge, UK and a North American headquarters in Colorado, US. The company will continue to be entirely platform agnostic in its choice of hardware to provide total portability to its clients and ensure the most effective performance for the problems being solved. 

For more information, visit www.quantinuum.com.

This release contains certain statements that may be deemed “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical fact, that address activities, events or developments that we or our management intends, expects, projects, believes or anticipates will or may occur in the future are forward-looking statements. Such statements are based upon certain assumptions and assessments made by our management in light of their experience and their perception of historical trends, current economic and industry conditions, expected future developments and other factors they believe to be appropriate. The forward-looking statements included in this release are also subject to a number of material risks and uncertainties, including but not limited to economic, competitive, governmental, and technological factors affecting our operations, markets, products, services and prices. Such forward-looking statements are not guarantees of future performance, and actual results, developments and business decisions may differ from those envisaged by such forward-looking statements. The Honeywell trademark is used under license from Honeywell International Inc. Honeywell makes no representations or warranties with respect to this service.

About Quantinuum

Quantinuum, the world’s largest integrated quantum company, pioneers powerful quantum computers and advanced software solutions. Quantinuum’s technology drives breakthroughs in materials discovery, cybersecurity, and next-gen quantum AI. With over 500 employees, including 370+ scientists and engineers, Quantinuum leads the quantum computing revolution across continents. 

May 20, 2025
Invest Qatar partners with Quantinuum to accelerate expansion and advance the region’s quantum computing ecosystem

Doha, Qatar, May 20th, 2025Invest Qatar, the Investment Promotion Agency of Qatar, has inked a strategic agreement with Quantinuum, the world leader in quantum computing and developer of the world’s highest-performing quantum computer. The partnership aims to strengthen Qatar’s quantum computing ecosystem by supporting Quantinuum’s recently announced expansion into the region, which was highlighted last week by the President of the United States during his historic state visit to Qatar.

Through this partnership, Invest Qatar will provide tailored support services to Quantinuum, including access to key stakeholders, sector-specific insights and opportunities for collaboration with local innovation and research institutions. Invest Qatar will also promote initiatives that drive quantum computing adoption and raise awareness of Quantinuum’s contributions to Qatar’s tech landscape.Through this partnership, Invest Qatar will support Quantinuum’s expansion into the country to apply quantum technologies for the benefit of key sectors in Qatar, while enhancing local research and development (R&D) capabilities, to create high-skilled jobs and train the next generation quantum workforce in Qatar. This includes facilitating connections with key stakeholders, enabling collaboration in R&D, and aligning with national initiatives aimed at advancing quantum technologies.

As part of the agreement, Quantinuum will play a central role in advancing Qatar’s quantum capabilities by launching a range of targeted initiatives, including knowledge-sharing platforms, educational seminars and technical workshops delivered by Quantinuum’s global experts. The partnership also envisions launching joint research projects with Qatari academic and research institutions, exploring opportunities for local integration of quantum technologies and facilitating access to Quantinuum’s cutting-edge quantum computing infrastructure. Additionally, internship opportunities will be offered to students from Qatar-based universities, providing direct experience in real-world quantum computing applications.

Commenting on the partnership, Sheikh Ali Alwaleed Al-Thani, CEO, Invest Qatar, said: “This partnership with Quantinuum reflects our continued commitment to positioning Qatar at the forefront of next-generation technologies. By combining global expertise with local ambition, we aim to cultivate a thriving quantum ecosystem that drives innovation, supports economic diversification and empowers future talent. We are pleased to work with Quantinuum to unlock the transformative potential of quantum computing for Qatar and the wider region.”

Dr. Rajeeb Hazra, President & CEO, Quantinuum, said: “Launching our presence in Qatar opens an exciting new chapter in a region ready to lead in quantum computing. Building on our recently announced expansion into the country through our joint venture with Al Rabban Capital, and our ongoing partnership with Hamad Bin Khalifa University, this collaboration with Invest Qatar reinforces our commitment to the growth of Qatar’s quantum computing ecosystem. As part of the deepening strategic ties between the U.S. and Qatar, we’re enabling direct access to our world-leading quantum hardware and software, creating value for academia and industry in Qatar while training the next generation of quantum developers and researchers to strengthen the region’s position as a global hub for advanced technologies.”

About Invest Qatar

The Investment Promotion Agency Qatar (Invest Qatar) is responsible for overseeing investment promotion activities, aimed at attracting foreign direct investment to Qatar. Established in 2019, Invest Qatar’s mission is to strengthen Qatar’s position as an ideal investment destination, while facilitating investments that foster economic diversification and development.

As the gateway to investment solutions, Invest Qatar connects investors to an integrated ecosystem of business and licensing platforms. The Agency partners with investors throughout their journey, from exploration and setup to expansion, ensuring their long-term growth by providing comprehensive insights into Qatar’s business landscape, sector-specific market knowledge and tailored investment facilitation.

For more information, please visit www.invest.qa

@InvestQatar | #InvestQatar

About Quantinuum    

Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across all industry benchmarks. Quantinuum’s over 550 employees, including 370+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution.  

For more information, please visit www.quantinuum.com

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May 14, 2025
Quantinuum and Al Rabban Capital Launch Joint Venture to Accelerate Quantum Computing Adoption in Qatar and the Region

Doha, Qatar, May 14th, 2025 — Quantinuum, the world leader in quantum computing, is establishing a Qatari-incorporated Joint Venture with Al Rabban Capital, a division of Al Rabban Holding Company, one of Qatar’s most prominent companies. The Joint Venture will accelerate quantum computing adoption in Qatar and the region, strategically positioning the U.S. and Qatar as global leaders in the quantum revolution. This first of its kind quantum technology partnership was highlighted by the President of the United States during his historic state visit to Qatar.

The Joint Venture has three core objectives: enabling access to Quantinuum’s world-leading quantum technologies in the region; co-developing quantum computing applications tailored to regional needs in areas such as New Energy, Materials Discovery, Precision Medicine, Genomics, and Financial Services, with new opportunities emerging in the era of Generative Quantum AI (GenQAI); and, training the next generation of quantum computing developers in Qatar and the region.

Quantinuum is steadily expanding its global presence to meet the growing international demand for its technology and applications. The company’s expansion into the Gulf region, starting with Qatar, follows its successful growth across the U.S., U.K., Europe and Indo-Pacific. This Joint Venture reflects a shared commitment by the U.S. and Qatar to strengthen strategic ties, spur bilateral investment in future-defining industries, and foster technological leadership and shared prosperity.  

Quantinuum’s Joint Venture with Al Rabban Capital builds on its partnership announced last year with Hamad Bin Khalifa University and the Qatar Center for Quantum Computing (QC2), Qatar’s premier quantum research hub.

“This is a defining moment in Qatar’s ambition to become a regional hub for advanced technologies like quantum computing,” said Abdulaziz Khalid Al Rabban, Chairman, Al Rabban Capital. “We're partnering with Quantinuum to deliver world-class quantum solutions, driving economic growth in Qatar and the region.”

“This Joint Venture demonstrates our shared vision to lead in transformative technologies,” said Dr. Rajeeb Hazra, President & CEO of Quantinuum. “Together with Al Rabban Capital, we’re accelerating the commercial adoption of quantum computing in Qatar and the region whilst serving U.S. and Qatari strategic interests.”

About Quantinuum

Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across key industry benchmarks. Quantinuum’s over 550 employees, including 370+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution.

For more information, please visit: https://www.quantinuum.com

About Al Rabban Capital

Al Rabban Capital (ARC) is a Qatari investment and advisory firm driving business growth across Qatar and the GCC. ARC enable market entry and expansion through joint ventures, strategic partnerships, and deep local insight. ARC supports both public and private sector initiatives with tailored, end-to-end solutions. Beyond capital, ARC provide strategic guidance, governance, and access to a robust regional network. ARC’s focus includes AI, quantum tech, healthcare, and sustainability, with a commitment to impactful growth.

For more information, please visit: https://www.alrabbancapital.com

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April 3, 2025
Quantinuum Selected by DARPA to Advance to First Stage of Quantum Benchmarking Initiative

Broomfield, CO, April 3rd, 2025 — Quantinuum, the industry leader in quantum computing with the world’s most powerful quantum computer, has been selected by the Defense Advanced Research Projects Agency (DARPA), a research and development agency of the United States Department of Defense, to participate in the first stage of the agency’s Quantum Benchmarking Initiative (QBI).

QBI aims to assess the feasibility of building an industrially useful quantum computer by 2033. Successful QBI performers will advance through stages A, B, and C; Stage A requires performers to describe their utility-scale quantum computer with a path to near-term realization, where utility-scale means the computational value exceeds costs.

As validated in a recent independent benchmarking study by a group of institutions at the forefront of quantum computing research, Quantinuum’s quantum systems are the highest performing in the industry. Last year, Quantinuum published its development roadmap, outlining a path to a universal, fully-fault tolerant quantum computer by 2029. Beyond this public roadmap, Quantinuum plans to scale to even larger machines in the early part of the 2030s, aligning with the objectives of QBI.

“We are honored to collaborate with DARPA and look forward to working closely with their test and evaluation team as they assess our roadmap and technological approach,” said Dr. Rajeeb Hazra, President and CEO of Quantinuum. “With our roadmap firmly on track, we are confident in our ability to deliver on DARPA’s objectives for QBI.”

Microsoft and NVIDIA will take part in Quantinuum’s Stage A effort, building on their long-standing collaborations with Quantinuum in advancing commercially scalable quantum computing.

About Quantinuum

Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across all industry benchmarks. Quantinuum’s over 550 employees, including 370+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution.  

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