12 September 2025
by Sarah Morgan

IBM promises first large-scale, fault-tolerant quantum computer

The company has released an updated quantum roadmap.

Advanced Technology Concept Visualization: Circuit Board CPU Processor Microchip Starting Artificial Intelligence Digitalization of Neural Networking and Cloud Computing pictured
© Gorodenkoff/Shutterstock

It has also has released two new research papers, in what it claims is a clear, rigorous, comprehensive framework for realising a large-scale, fault-tolerant quantum computer.

It is promising to deliver IBM Quantum Starling — a large-scale, fault-tolerant quantum computer capable of running quantum circuits comprising 100 million quantum gates on 200 logical qubits.

In a new paper, now available on the arXiv, the company detail a rigorous end-to-end framework for a fault-tolerant quantum computer that is modular and based on the bivariate bicycle codes it introduced with a 2024 publication in Nature.

 

It is also releasing a second paper that details what it states is the first-ever accurate, fast, compact, and flexible error correction decoder — one that is amenable to efficient implementation for real-time decoding.

Since 2020, IBM claims to have worked transparently along its quantum roadmap, laying out the steps required to realise useful quantum computing and claims to have delivered each milestone.

A video 'Realizing large-scale, fault-tolerant quantum computing,' is available online on YouTube.

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