Quantinuum Partners with Microsoft in New Phase of Reliable Quantum Computing with Breakthrough Demonstration of Reliable Logical Qubits

April 3, 2024

Quantinuum’s latest generation quantum computer with Microsoft’s qubit-virtualization system  demonstrate logical qubits with 800x better logical error rates than physical error rates

BROOMFIELD, CO, and LONDON, U.K., April 3, 2024 – Quantinuum, the world’s largest integrated quantum computing company, together with Microsoft, has achieved a breakthrough in making fault tolerant quantum computing a reality, by demonstrating the most reliable logical qubits with active syndrome extraction, an achievement previously believed to be years away from realization.

A collaboration between Quantinuum's team in the USA and UK and Microsoft's quantum computing team has led to the creation of four logical qubits that demonstrate error rates 800 times lower than corresponding physical error rates. Impressively, the joint team demonstrated the ability to run 14,000 independent instances of a quantum circuit error-free. Breakthroughs of this magnitude have the potential to significantly accelerate progress towards the ultimate goal of achieving universal fault tolerant quantum computing, potentially shortening the timeline to tackling real-world problems and revolutionizing fields like materials science and drug discovery. 

The achievement stems from the industry leading fidelity, scalability, and flexibility of Quantinuum's 32-qubit H2 quantum processor, Powered by Honeywell, combined with Microsoft’s highly innovative error correction capabilities. The joint team created four logical qubits using 30 of the 32 physical qubits available on the H2, leading to the creation of what both companies herald as the most "reliable logical qubits". They also successfully demonstrated syndrome extraction, another critical milestone that is necessary for fault tolerant quantum computing.  More details of the results can be reviewed here.

"The result announced today further cements Quantinuum's position at the forefront of universal fault tolerant quantum computing. Today’s achievement was only possible using Quantinuum’s H2 quantum computer, with its unparalleled 99.8% two-qubit gate fidelities; the 32 qubits in our QCCD architecture; and all-to-all qubit connectivity. Building on the exceptional performance of our current systems, we will continue to innovate to make universal fault tolerant quantum computing a reality sooner than previously imagined.” - Rajeeb Hazra, CEO, Quantinuum.

In the new era described by Microsoft as “Level 2 Resilient”, quantum computing is capable of dealing with the issues caused by errors, and can begin to tackle meaningful challenges, such as modelling the states of molecules and materials, simulating systems in condensed matter physics, and exploring solutions to problems across many fields. Based on Microsoft’s exacting criteria, the demonstration of multiple, entangled logical qubits, with the logical qubits outperforming the physical qubits marks a long-anticipated transition into this second phase of quantum computing.

“This is an important breakthrough for quantum computing. The collaboration between Quantinuum and Microsoft has established a crucial step forward for the industry and demonstrated a critical milestone on the path to hybrid classical-quantum supercomputing capable of transforming scientific discovery.” - Dr. Krysta Svore – Distinguished Engineer and VP of Advanced Quantum Development for Microsoft Azure Quantum

“As leaders, we will continue to innovate more rapidly than the competition, with hardware innovations and developing applications to take advantage of the new era of truly logical qubits. We will continue to ensure that our customers are the first to benefit from these and future breakthroughs. I am excited to see how they take advantage of reliable quantum computing, to generate more powerful solutions than ever to their most challenging problems.” - Ilyas Khan, Vice-Chairman and Chief Product Officer, Quantinuum

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 almost 500 employees, including 370+ scientists and engineers, Quantinuum leads the quantum computing revolution across continents.

The Honeywell trademark is used under license from Honeywell International Inc. Honeywell makes no representations or warranties with respect to this service.



Kaniah Konkoly-Thege

Kaniah is Chief Legal Counsel and SVP of Government Relations for Quantinuum. In her previous role, she served as General Counsel, Honeywell Quantum Solutions. Prior to Honeywell, she was General Counsel, Honeywell Federal Manufacturing and Technologies, LLC, and Senior Attorney, U.S. Department of Energy. She was Lead Counsel before the Civilian Board of Contract Appeals, the Merit Systems Protection Board, and the Equal Employment Opportunity Commission. Kaniah holds a J.D. from American University, Washington College of Law and B.A., International Relations and Spanish from the College of William and Mary.

Jeff Miller

Jeff Miller is Chief Information Officer for Quantinuum. In his previous role, he served as CIO for Honeywell Quantum Solutions and led a cross-functional team responsible for Information Technology, Cybersecurity, and Physical Security. For Honeywell, Jeff has held numerous management and executive roles in Information Technology, Security, Integrated Supply Chain and Program Management. Jeff holds a B.S., Computer Science, University of Arizona. He is a veteran of the U.S. Navy, attaining the rank of Commander.

Matthew Bohne

Matthew Bohne is the Vice President & Chief Product Security Officer for Honeywell Corporation. He is a passionate cybersecurity leader and executive with a proven track record of building and leading cybersecurity organizations securing energy, industrial, buildings, nuclear, pharmaceutical, and consumer sectors. He is a sought-after expert with deep experience in DevSecOps, critical infrastructure, software engineering, secure SDLC, supply chain security, privacy, and risk management.

Todd Moore

Todd Moore is the Global Vice President of Data Encryption Products at Thales. He is responsible for setting the business line and go to market strategies for an industry leading cybersecurity business. He routinely helps enterprises build solutions for a wide range of complex data security problems and use cases. Todd holds several management and technical degrees from the University of Virginia, Rochester Institute of Technology, Cornell University and Ithaca College. He is active in his community, loves to travel and spends much of his free time supporting his family in pursuing their various passions.

John Davis

Retired U.S. Army Major General John Davis is the Vice President, Public Sector for Palo Alto Networks, where he is responsible for expanding cybersecurity initiatives and global policy for the international public sector and assisting governments around the world to prevent successful cyber breaches. Prior to joining Palo Alto Networks, John served as the Senior Military Advisor for Cyber to the Under Secretary of Defense for Policy and served as the Acting Deputy Assistant Secretary of Defense for Cyber Policy.  Prior to this assignment, he served in multiple leadership positions in special operations, cyber, and information operations.