Microsoft has introduced the Majorana 2 quantum-computing chip, which the company said features qubits that are 1,000 times more reliable [1].

This development represents a push toward creating a commercially viable quantum computer capable of solving complex problems that current classical computers cannot handle. If the reliability claims hold, it could significantly shorten the timeline for scalable quantum hardware.

Jason Zander, Microsoft's executive vice president of strategic missions and technologies, said the chip during an interview with CNBC. The company presented the hardware as part of its broader showcase at the Microsoft Build event.

According to a Microsoft spokesperson, the Majorana 2 qubits maintain coherence for 20 seconds [2]. This is a stark contrast to the microsecond coherence times typical of rival systems [2]. The company also said that agentic AI was used in the construction of these qubits [2].

Microsoft has set a target to develop a scalable quantum computer by 2029 [3]. The broader goal is to have a system solving commercially useful problems by the end of the decade [4].

However, the announcement has met with skepticism from some in the scientific community. A Scientific American author said the announcement of the Majorana 2 chip continues a trend of bold claims followed by scant evidence.

While Microsoft maintains the chip is a breakthrough, critics argue that the announcement lacks sufficient evidence to support the aggressive timeline. The discrepancy highlights a tension between corporate milestones and the rigorous verification required by physicists.

“Majorana 2 contains qubits … that are 1,000 times more reliable, according to Microsoft.”

The gap between Microsoft's claims and the skepticism of the physics community underscores the 'noisy intermediate-scale quantum' (NISQ) era's volatility. While 20-second coherence times would be a generational leap, the lack of peer-reviewed data means the 2029 scalability target remains a corporate aspiration rather than a scientific certainty.