Microsoft Says It Will Have A Useful Quantum Computer In Three Years

Microsoft claims it will have a useful quantum computer in just three years—decades ahead of many predictions. The company announced the release of its second-generation quantum chip, promising a commercially viable quantum machine by 2029 that could solve problems classical computers cannot.

Microsoft unveiled its second-generation quantum chip at a press event on June 5, 2026. The company says this chip uses topological qubits, a fundamentally different design that is far more resistant to environmental noise. Microsoft claims it has now demonstrated the controlled creation and manipulation of Majorana quasiparticles, the exotic particles that underpin its topological qubit architecture. If the timeline holds, Microsoft would leapfrog rivals like Google and IBM, who have yet to promise a useful quantum computer within five years.

Quantum computing has been a holy grail for decades, but progress has been slow. Most current machines, such as Google's Sycamore or IBM's Osprey, use superconducting qubits that are extremely fragile and require near-absolute-zero temperatures. The qubits are prone to errors, and scaling to thousands or millions of qubits—needed for practical tasks—remains daunting. Microsoft has taken a different path since 2016, betting on topological qubits that encode information in the braiding of Majorana fermions. The theory predicts these qubits are inherently error-tolerant, drastically reducing the overhead needed for error correction. The challenge has been proving the existence of Majorana fermions in a controlled semiconductor-superconductor device.

Microsoft's second-generation chip represents the culmination of years of research. The chip is fabricated using a combination of indium arsenide nanowires and aluminium, cooled to millikelvin temperatures. In a paper submitted to a peer-reviewed journal, Microsoft researchers reported signatures of Majorana zero modes with improved stability and longer coherence times compared to earlier devices. The company says the chip can form the building block of a larger, fault-tolerant quantum processor. "We've crossed a critical threshold," commented Dr. Chetan Nayak, a senior researcher at Microsoft Quantum. "This is no longer just theory—we have a device that behaves as predicted." Microsoft plans to integrate multiple such chips into a scalable system over the next three years.

The broader implications are immense. A useful quantum computer could revolutionise drug discovery by simulating molecular interactions with atomic precision, accelerate battery design by modelling electron behaviour, and break current encryption standards—ushering in both immense opportunity and security risk. Corporations and governments are racing to achieve quantum advantage. IBM has set 2033 as its target for a fault-tolerant machine, while Google aims for the end of the decade. Microsoft's claim, if credible, would reset the competitive landscape. However, many quantum physicists remain cautious. "We've heard bold timelines before," said Dr. Sharmila Bhattacharya, a physics professor at Stanford. "The devil is in the details of scaling and error rates."

Over the next 36 months, Microsoft will need to demonstrate a fully functional topological qubit with error rates below the fault-tolerance threshold, then fabricate and connect thousands of them on a single processor. The company also plans to open access to its quantum cloud platform for early testers. The quantum computing industry will watch Microsoft's milestones closely. If successful, the world could see a truly useful quantum computer by the end of the decade—a breakthrough that would rewrite the rules of computing.