Title: Microsoft Claims Majorana 2 Chip Offers 1,000-Fold Reliability Boost Over Previous Model

Microsoft has announced that its latest quantum processor, Majorana 2, significantly outperforms its predecessor, marking a critical step toward building a quantum computer capable of solving commercially valuable problems within the next three years.

Quantum computing relies on qubits, units of data that hold the potential to tackle computational challenges beyond the reach of classical supercomputers. However, these qubits have historically been fragile and prone to instability. According to Microsoft, the qubits in the new Majorana 2 chip maintain their state for an average of 20 seconds, a substantial increase from the mere milliseconds achieved by the original Majorana 1 chip. This improvement translates to a 1,000-fold increase in reliability. The tech giant illustrated the magnitude of this advancement by comparing it to the difference between a mobile phone requiring daily charging and one that only needs power every few years.

"We will have a quantum machine in 2029 that can solve commercially viable, reasonable problems," stated Zulfi Alam, Corporate Vice President of Microsoft Quantum.

Despite this progress, significant hurdles remain. Alam noted that a commercially viable device would require millions of qubits, whereas the current chip contains only 12. Evaluating Microsoft’s assertions is challenging, as the company has withheld full technical details, citing commercial confidentiality. This development occurs amid a global competition to harness quantum technology for tasks that are currently too complex for even the most advanced traditional computers.

Microsoft has dedicated two decades to a "topological" approach to quantum computing. This method seeks to exploit the theoretical properties of a quasi-particle predicted in the 1930s by Italian physicist Ettore Majorana. To achieve this, researchers had to utilize a novel state of matter distinct from the conventional solid, liquid, or gas phases.

Paul Stevenson, a physics professor at the University of Surrey, assessed the announcement. He suggested that if the company’s research validates its claims, the timeline is plausible. "Microsoft appears to have made a leap in their attempt to produce viable topological qubits," Stevenson observed. "If they succeed, they will leap from being a player with no production quantum computer, to being a serious player in the race to make the next generation of fault-tolerant machines."

Microsoft’s commitment to topological qubits has not been without controversy. In 2018, the company was compelled to retract a paper published in Nature after it failed to find evidence for the existence of the Majorana particle. Nevertheless, the firm persisted, releasing its first Majorana chip in 2025. The strategy drew skepticism from some experts; Henry Legg, a physicist at the University of St Andrews, previously told the BBC that Microsoft’s quantum research had "moved firmly away from science and entered the realm of faith."

Addressing the criticism, Jason Zander, Executive Vice President of Microsoft Quantum and Discovery, defended the company’s approach. "We stand behind it 100%," Zander said. "We really look to scientific rigor. We welcome the debate that has always been part of physics... the key thing I would tell people, go read the papers and look what's there, go talk to the experts that we have given deep information to."

Microsoft is currently in the final phase of a program managed by the US Defense Advanced Research Projects Agency (DARPA). The agency’s goal is to "verify and validate the firm's utility-scale quantum computer concept." Microsoft claims to have provided DARPA with all its data and operational details, including commercially sensitive information, for evaluation.

However, the scientific community remains cautious. The paper accompanying the announcement has not undergone peer review, a standard process involving independent expert scrutiny. Consequently, scientists interviewed by the BBC have requested more detailed information. The second-generation Majorana chip operates on the same fundamental principles as the first but achieves greater efficacy, partly due to the substitution of lead for aluminum as a superconductor. While the team is utilizing AI to assist in...

Source: BBC News Generated at: 2026-06-02 19:24:31 UTC