Quantum Chemistry Progresses Meaningfully Towards a Fault Tolerant Regime Using Logical Qubits

In a major scientific first, quantum chemistry experts at Quantinuum have used a partially fault tolerant algorithm run on logical qubits to simulate the hydrogen molecule (H2)

July 12, 2023

Tokyo, Japan, Cambridge, UK, and Broomfield, Colorado, July 12th, 2023 — Quantinuum, the world’s largest quantum computing company, has become the first to simulate a chemical molecule by implementing a partially fault tolerant algorithm on a quantum processor using logical qubits. 

This essential step towards using quantum computers to speed up molecular discovery, with better modeling of chemical systems, reduces the time to generate commercial and economic value.

Quantinuum scientists, led from Japan, used three logical qubits on Quantinuum’s H1 quantum computer to calculate the ground state energy of the hydrogen molecule (H2) using an algorithm for early fault tolerant devices called stochastic quantum phase estimation.

It is already known that many algorithms that can be used on today’s “NISQ” era quantum computers will not scale to larger problems. The phase estimation technique used in this experiment with logical qubits has better potential to scale but is challenging to implement on today’s quantum computers because it requires very complex circuits, which are prone to failing due to noise. 

Dr. Raj Hazra, CEO of Quantinuum, said: “Today’s announcement turns a page for quantum chemistry on quantum computers, moving us towards the era of early fault tolerance. This achievement is testament to the dedication of the hardware and software teams at Quantinuum, who consistently demonstrate their ability to achieve world-class results. It was made possible thanks to the H1 quantum computer which brings together high-fidelity gate operations, all-to-all connectivity and conditional logic, with the truly world-leading algorithms, methods and error handling techniques offered by our InQuanto chemistry platform.”

In a scientific preprint paper, “Demonstrating Bayesian Quantum Phase Estimation with Quantum Error Detection”, the team of scientists led by Dr. Kentaro Yamamoto report they have overcome this challenge by creating and using logical qubits achieved with a newly developed error detection code designed for the H-series quantum hardware*. The code saved quantum resources by immediately discarding a calculation if it detected qubits that had produced errors during the computation process.

When combined with the low noise of the H-Series hardware and the capabilities of the Quantinuum Software InQuanto™, researchers were able to run these complex circuits for the first time, producing more accurate simulation results than those achieved without the error detection code. Creating and using logical qubits with error detection is a prerequisite for the more advanced error correction, which provides real-time protection for a quantum computer against various forms of “noise”.

Dr. Kentaro Yamamoto, Senior Researcher at Quantinuum, said: “Simulating the hydrogen molecule and getting such good results with logical qubits is an excellent experimental result and reminds us how fast we continue to progress. This result may reflect the start of a new chapter for quantum computing professionals, where we can begin to adopt partially fault tolerant algorithms on near-term devices, using all the techniques that will ultimately be required for future large-scale quantum computing.”

For scientific researchers and industrial enterprises in sectors such as healthcare, energy, automotive and manufacturing, who invest heavily in researching future molecules and materials, this demonstration implies that the time to useful quantum computing continues to get nearer.

This demonstration, which was run on Quantinuum’s System Model H1 quantum computer, Powered by Honeywell, will be integrated into future versions of its industry-leading quantum computational chemistry platform, InQuanto, allowing industrial companies and academic researchers to explore the use of partially fault-tolerant algorithms run on quantum computers for material and molecular modeling.

* For more information about the error detection code, see “Protecting Expressive Circuits with a Quantum Error Detection Code”

About Quantinuum

Quantinuum is the world’s largest standalone quantum computing company, formed by the combination of Honeywell Quantum Solutions’ world-leading hardware and Cambridge Quantum’s class-leading middleware and applications. Science-led and enterprise-driven, Quantinuum accelerates quantum computing and the development of applications across chemistry, cybersecurity, finance and optimization. Its focus is to create scalable and commercial quantum solutions to solve the world’s most pressing problems in fields such as energy, logistics, climate change, and health. The company employs over 480 individuals, including 350+ scientists and engineers, at eight sites across the United States, Europe, and Japan. For more information, please visit https://www.quantinuum.com. 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. 

January 21, 2025
Quantinuum Announces Plans to Build a New Quantum R&D Center in New Mexico, Anchoring the State’s Quantum Technology Revolution
  • Quantinuum intends to establish cutting-edge research and development hub in New Mexico, a burgeoning epicenter for quantum technology innovation 
  • The proposed center will focus on photonics technologies, which is essential to the advancement of Quantinuum’s trapped ion quantum computing technologies

BROOMFIELD, CO – JANUARY 21, 2025 – Quantinuum, the world’s largest integrated quantum computing company, announced plans today to open a new location in New Mexico. This anticipated site will support ongoing collaborative efforts to advance the photonics technologies critical to furthering Quantinuum’s product development. Photonics, the science and technology of light, is essential to the advancement of Quantinuum’s trapped ion quantum computing technologies, which use light to control and manipulate qubits.

New Mexico has established itself as a leader in quantum information sciences and the development of photonics and other enabling technologies. In July 2024, the U.S. Department of Commerce’s Economic Development Administration, as part of its Tech Hubs program, officially designated Colorado, home to Quantinuum’s U.S. Headquarters, and New Mexico as leading hubs for quantum information technology.

“I am thrilled to welcome Quantinuum to New Mexico, launching a new industry for our state that builds on our proud foundation of innovation,” said New Mexico Governor Michelle Lujan Grisham. “No state is better positioned to transform the momentum of the quantum computing industry into major economic and entrepreneurial growth, and Quantinuum will be a groundbreaking partner in that work. Together we will leverage New Mexico’s assets, including the groundbreaking work being done at our national laboratories and the nation’s best quantum scientists being educated at our universities, to invest in and grow the state’s quantum technologies industry, creating career opportunities for New Mexicans and continuing to build the technology of the future.”

Dr. Rajeeb Hazra, President and CEO of Quantinuum, said, “As the established leader in quantum computing, Quantinuum has found an ideal partner in New Mexico. The state’s dynamic technology ecosystem and highly skilled workforce align perfectly with our strategic goals.”

Quantinuum’s New Mexico location, anticipated to open later this year, is expected to create high-paying jobs and drive economic growth. Quantinuum has a longstanding history of collaboration with experts from the national laboratories in New Mexico, such as Sandia National Laboratories and Los Alamos National Laboratory, and universities, such as The University of New Mexico, in showcasing the performance of the company’s trapped ion quantum computing hardware. These partnerships have not only advanced the exploration of innovative applications and use cases, but have also been instrumental in supporting workforce development, education and various other efforts in the state and region. 

The development of technologies for quantum computing is critical to strengthen U.S. economic competitiveness and national security. The robust quantum ecosystem taking rise in New Mexico—from the national labs to universities to the private sector—will help  ensure the United States is a leader in quantum computing.

About Quantinuum

Quantinuum, the world’s largest integrated quantum computing company, pioneers powerful quantum computers and advanced software solutions. Quantinuum’s technology drives breakthroughs in materials discovery, cybersecurity, and next-gen quantum AI. With more than 550 employees, including 370+ scientists and engineers, Quantinuum leads the quantum computing revolution across continents.

For more information, please visit the website at www.quantinuum.com.

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November 19, 2024
Infineon and Quantinuum announce partnership to accelerate quantum computing towards meaningful real-world applications
  • Companies aim at developing powerful ion traps for Quantinuum’s future generations of quantum computers.
  • Infineon provides expertise in process development, fabrication, and quantum processing unit (QPU) technology
  • Partnership to drive progress in fields such as generative chemistry, material science, and artificial intelligence.

Neubiberg, Germany and Broomfield, Colorado, USA, 19 November 2024 – Infineon Technologies AG, a global leader in semiconductor solutions, and Quantinuum, a global leader in integrated, full-stack quantum computing, today announced a strategic partnership to develop the future generation of ion traps. This partnership will drive the acceleration of quantum computing and enable progress in fields such as generative chemistry, material science, and artificial intelligence.

“We are thrilled to partner with Quantinuum, a leader in quantum computing, to push the boundaries of quantum computing and generate larger, more powerful machines that solve meaningful real-life problems," said Richard Kuncic, Senior Vice President and General Manager Power Systems at Infineon Technologies. “This collaboration brings together Infineon's state-of-the-art knowledge in process development, fabrication, and quantum processing unit (QPU) technology with Quantinuum's cutting-edge ion-trap design expertise and experience with operating high-performance commercial quantum computers.”

Infineon innovates with a dedicated team to make their trapped-ion quantum processing units (QPUs) the heart of the leading quantum computers. The company has invested in this field since 2017, applying its expertise in high-volume processing technologies and developing technologies, like integrated photonics and control electronics, to enable their partners to scale the qubit count of their machines.

In Quantinuum’s hardware approach, charged atoms are trapped with electromagnetic fields so they can be manipulated and encoded with information using microwave signals and lasers. This design has distinct advantages over other quantum hardware, including higher fidelities and longer coherence times.

This collaboration builds on today’s leading performance of Quantinuum's trapped-ion quantum computers, which currently hold the world records in key performance benchmarks such as 2-qubit gate fidelity, quantum volume and cross-entropy benchmark fidelity. To deliver even better fidelity at greater scale and achieve commercial advantage, larger and more sophisticated ion traps are needed. Engineers from the two companies have been working together for more than a year and will intensify their efforts under the current partnership to develop powerful ion traps for Quantinuum’s next-generation quantum computers.

“At Quantinuum, our mission is to accelerate useful quantum computing. We have announced a roadmap to reach universal fault-tolerance in 2029. Our partnership with Infineon is key to our delivering on this commitment,“ said Dr. Rajeeb Hazra, President and CEO of Quantinuum.

About Quantinuum

Quantinuum, the world’s largest integrated quantum computing 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.

For more information, please visit the website at www.quantinuum.com

About Infineon

Infineon Technologies AG is a global semiconductor leader in power systems and IoT. Infineon drives decarbonization and digitalization with its products and solutions. The Company had around 58,060 employees worldwide (end of September 2024) and generated revenue of about €15 billion in the 2024 fiscal year (ending 30 September). Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the OTCQX International over-the-counter market (ticker symbol: IFNNY).

For more information, please visit the website at www.infineon.com

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November 19, 2024
Quantinuum Named Winner in Fast Company’s 2024 Next Big Things in Tech Awards

Broomfield, Colorado, November 19th, 2024 – Quantinuum, the world’s largest and leading integrated quantum computing company, has been recognized by Fast Company as a winner in the 2024 Next Big Things in Tech Awards in the Computing, Chips, and Foundational Technology category. In its fourth year, the list honors technology breakthroughs that promise to shape the future of our society. This prestigious accolade underscores Quantinuum’s advancements with its System Model H2 quantum processor, the latest in a series of groundbreaking announcements.

Quantinuum’s H2 Quantum Processor: A Breakthrough in Quantum Computing

Launched in 2023 and upgraded in 2024, the H2 quantum processor represents a major advancement in quantum computing. As the most benchmarked system with the highest quantum volume in the industry, H2 is a testament to Quantinuum’s path in leading the world to universal, fully fault tolerant quantum computing future.

"The System Model H2 represents a significant leap in computing, demonstrating capabilities that can no longer be fully simulated by classical computers." said Dr. Rajeeb Hazra, President & CEO of Quantinuum. "Its unique design has led to significant achievements, including the creation of 12 reliable logical qubits and a 100-fold enhancement in a key quantum computing benchmark, Random Circuit Sampling (RCS). These results have made our systems integral to hybrid quantum computing workflows, combining our high performing quantum systems with leading AI and HPC solutions.” 

These innovations have the potential to revolutionize fields like chemistry, drug discovery, and financial forecasting, demonstrating the far-reaching implications of Quantinuum's work.

Roadmap to Universal, Fully Fault Tolerant Quantum Computing

Quantinuum recently unveiled its accelerated roadmap to achieve universal fault-tolerant quantum computing in 2029. This integrated path not only emphasizes hardware advancements but also focuses on critical software capabilities that are essential for delivering full-stack quantum computing and hybrid quantum computing solutions.  

Quantinuum’s next system, Helios, will launch in 2025 with 96 qubits and will help to unlock scientific advances that will surpass classical computing results.

About Quantinuum

Quantinuum, the world’s largest integrated quantum computing 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. 

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