A team of scientists from Quantinuum, QuTech, and the University of Stuttgart has achieved a significant breakthrough in fault-tolerant quantum computing using the quantum computer H1. This development is crucial for advancing the field of quantum technologies and realizing the potential of quantum computers in medicine, finance, artificial intelligence, and environmental solutions.

Fault-tolerant quantum computers are capable of overcoming errors that occur during quantum operations, making them more reliable and practical for real-world applications. Quantinuum’s recent demonstration shows the first fault-tolerant method using three logically encoded qubits in the H1 quantum computer, powered by Honeywell.

Achieving fault tolerance is a major milestone in the development of quantum computers. It enables practical solutions to complex problems in various fields such as molecular simulation, optimization, cybersecurity, and artificial intelligence. The results of this breakthrough, published in a new article in arXiv, demonstrate the increasing pace of progress in quantum computing.

Quantinuum has been at the forefront of advances in quantum computing, consistently achieving significant milestones. Previous advancements include the demonstration of entangling gates between logical qubits and the simulation of the hydrogen molecule using logically encoded qubits. These accomplishments highlight the company’s commitment to pushing the boundaries of what is possible in quantum computing.

The team achieved fault tolerance by performing a one-bit addition using the smallest known fault-tolerant circuit. This resulted in a significantly lower error rate compared to an uncoded circuit. The physical error rates of the Quantum Coupled Charge Device (QCCD) architecture used in Quantinuum’s H-series quantum computers played a crucial role in achieving this level of error suppression.

By harnessing low-overhead Clifford logical gates and the transversal CCZ gate of a three-dimensional color code, the team reduced the number of gates and measurements required for a one-bit addition. This breakthrough demonstrates that real hardware is capable of executing all essential components of fault-tolerant quantum computing.

Ilyas Khan, Product Director and Founder of Quantinuum, emphasized the importance of this achievement and highlighted the unique features of the H-series quantum computers. The ion trap architecture offers the lowest physical error rates and flexibility in qubit transport, allowing users to implement a greater variety of error correction codes.

Quantum computing continues to rapidly evolve, and Quantinuum’s advancements in fault-tolerant quantum operations pave the way for further computational breakthroughs. As the company combines the quality of its hardware with meaningful real-world tasks, the impact of quantum computing on various industries is bound to increase.

– Quantinuum
– PR Newswire