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. 

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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November 18, 2024
Quantinuum together with Mitsui advance unforgeable quantum tokens over fibre network in first ever trial
  • First successful delivery of quantum tokens using commercial QKD hardware, demonstrating fast transaction verification at the point of exchange - a crucial step toward quantum-enhanced financial security and a major advance for QKD.
  • Quantum tokens are designed to provide unforgeability, privacy, and fast settlement, in a single financial instrument. No previous technology can deliver these three combined benefits.
  • In the world’s first implementation using off-the-shelf hardware, quantum tokens were transmitted across 10km of fibre in Tokyo, using commercial quantum key distribution (QKD) devices provided by NEC*.
  • This is a pivotal step towards the deployment of ultra-high-security quantum tokens in use cases such as tokenized asset security and high-speed trading.

Tokyo, Japan and Broomfield, Colorado - November 18th, 2024 – In a long anticipated trial, Quantinuum ("Quantinuum", Head Office: Broomfield, Colorado, U.S.A., CEO: Rajeeb Hazra), together with Mitsui & Co., Ltd. ("Mitsui", Head Office: Tokyo, President and CEO: Kenichi Hori) and NEC ("NEC", Head Office: Tokyo, President and CEO: Takayuki Morita) today announced the successful delivery of quantum tokens across a 10km fibre-optic network in Japan. This is the first time such a delivery has been accomplished.

Quantum tokens are a new financial instrument that take advantage of the properties of quantum physics to meet the robust demands of asset trading without the communication overheads required by traditional financial systems. Quantum tokens are transmitted across fibre-optic quantum key distribution (QKD) networks, which are rapidly expanding around the globe. Today's announcement with Mitsui demonstrates growing industry recognition of quantum tokens' potential in financial services.

Ilyas Khan, Founder and Chief Product Officer at Quantinuum, said: “The original motivation for quantum communications was the exchange of money, as envisaged by Stephen Wiesner. Today, we have demonstrated real-world security enhancements for financial systems using off-the-shelf quantum communications hardware. This opens the door to a new era in quantum-enhanced security with wide applicability, providing commercial organisations with something concrete to utilise.”

Koji Naniwada, Deputy General Manager, Quantum Innovation Dept. at Mitsui, said: “Quantum tokens will increase the security of digital assets, while improving transaction performance and maintaining privacy. These topics are critical for our customers and partners in the financial sector and this demonstration is a valuable outcome of our partnership with Quantinuum.”

Naoki Ishida, Director with the Trading and Service Solution Department at NEC, said: “We are the first to provide a platform for realizing a quantum token system using NEC’s quantum key distribution (QKD) devices. Based on the results of this trial between Mitsui & Co. and Quantinuum, we will continue to work towards the social implementation of quantum cryptography technology.”

Quantum tokens are designed to use quantum physics to prevent forgery, while ensuring transactions can be settled near-instantly, whereas traditional payments systems rely on double-entry bookkeeping to prevent double-spending of funds. This adds time, overhead and risk to every transaction, as digital systems are consulted to confirm funds are available and to settle transactions. 

Quantum tokens instead rely on the no-cloning theorem of quantum physics to prevent forgeries and double-spending. Only the intended recipient will receive the correct token data, which can only be spent at one location in the future. This enables near-instant transaction settlement by removing the need to check multiple systems or wait for network confirmations.

As demonstrated in Quantinuum’s recent work with HSBC, securing digital assets in the quantum-age is growing in urgency. The financial sector is increasingly looking to quantum technology to solve these complex problems with the power of nature.

Learn more about this new frontier of financial security, powered by quantum, in our whitepaper.

***

Note:

(*) The equipment provided by NEC was partially supported by results from Japan’s Ministry of Internal Affairs and Communications’ (MIC)  “Research and development for construction of a global quantum cryptography network”(JPJ008957) under “R&D of ICT Priority Technology Project” (JPMI00316) and Japan’s Cabinet Office’s "Photonics and Quantum Technology for Society 5.0" project under the Cross-ministerial Strategic Innovation Promotion Program (SIP).

About Mitsui

Mitsui & Co. is a global trading and investment company with a presence in more than 60 countries and a diverse business portfolio covering a wide range of industries.

The company identifies, develops, and grows its businesses in partnership with a global network of trusted partners including world leading companies, combining its geographic and cross-industry strengths to create long-term sustainable value for its stakeholders. 

Mitsui has set three key strategic initiatives for its current Medium-term Management Plan: supporting industries to grow and evolve with stable supplies of resources and materials, and providing infrastructure; promoting a global transition to low-carbon and renewable energy; and empowering people to lead healthy lives through the delivery of quality healthcare and access to good nutrition. 

Visit https://www.mitsui.com/jp/en/index.html for more information.

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.

About NEC Corporation

NEC Corporation has established itself as a leader in the integration of IT and network technologies while promoting the brand statement of “Orchestrating a brighter world.” NEC enables businesses and communities to adapt to rapid changes taking place in both society and the market as it provides for the social values of safety, security, fairness and efficiency to promote a more sustainable world where everyone has the chance to reach their full potential. For more information, visit NEC at http://www.nec.com. 

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